RabbitCore RCM2300
Contents
1. Figure C 3 Installing Optional Battery Connector on RCM2300 A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165 mA h is recommended A lithium battery is strongly recommended because of its nearly constant nominal voltage over most of its life The drain on the battery by the RCM2300 is typically 16 uA when no other power is sup plied If a 950 mA h battery is used the battery can last more than 6 years 950 MAD _ 68 years 16 pA Suse The actual life in your application will depend on the current drawn by components not on the RCM2300 and the storage capacity of the battery Note that the shelf life of a lithium battery is ultimately 10 years User s Manual 43 C 2 1 Battery Backup Circuits The battery backup circuit serves three purposes e t reduces the battery voltage to the SRAM and to the real time clock thereby limiting the current consumed by the real time clock and lengthening the battery life tensures that current can flow only out of the battery to prevent charging the battery e A voltage VOSC is supplied to U6 which keeps the 32 768 kHz oscillator working when the voltage begins to drop VRAM and Vcc are nearly equal 100 mV ty2. J4 J5 GND m of VCC PAO o PA1 PCOr o s PCI PAZ o o PA3 PC2 o o _ PC3 PA4C o o PAS TPOUT o o TPOUT PA6 o o PA7 LNK jo o PD3 IRESC o o PBO PD4 o n 1 PD5 PB2 70 o PB3 NORD C o 0 IOWR PB4C o o PB5 PEOC o a PE1 PB7C o 0 D7 TPIN jo o TPIN D6eC o 2 0 D5 PE4 o 5 PES D4 jo of D3 ACT jo 0 0 PE7 D2 Co o D1 A3C o of A2 DOC o o VBAT A1C o o0 A0 vcc 5 0 GND Note These pinouts are as seen on the Bottom Side of the module Figure 2 RCM2300 I O Pinout Fifteen additional connection points are available along one edge of the RCM2300 board These connection points are 0 030 diameter holes spaced 0 05 apart Nineteen additional connection points are available at locations J2 and J3 These additional connection points are reserved for future use The remaining discussion is focused on the I O points available on headers J4 and J5 because it is anticipated that most users will not use the through hole connection points because of their reduced convenience Table 1 lists the pinout configurations on headers J4 and J5 The ports on the Rabbit 2000 microprocessor used in the RCM2300 are configurable and so the factory defaults can be reconfigured Table 1 lists the factory defaults and the alternate configurations 6 RabbitCore RCM2300 Table 1 RabbitCore RCM2300 Pinout Configurations
3. Pin Pin Name Default Use Alternate Use Notes 1 GND 2 VCC 3 PCO Output TXD 4 PCI Input RXD 5 PC2 Output TXC 6 PC3 Input RXC 7 PC6 Output TXA Is also connected to pro gramming port used to 8 PC7 Input RXA program debug 9 PE2 Bidirectional I O T O control 10 PD3 T PDA Bitwise or parallel pro ATXB output grammable I O P 12 PD5 ARXB input 13 IORD Input I O read strobe E 3 14 IOWR Output I O write S strobe T 15 PEO nm IO control or INTOA input Bitwise or parallel pro grammable I O 16 PEI Il control or INTIA input 17 SMODEI Startup mode bit input Input Can only be used as general inputs after the startup mode n op code has been read fol 18 SMODEO Startup mode bit input Input lowing boot up 19 PE4 mE I4 control or INTOB input Bitwise or parallel pro grammable I O 20 PES I5 control or INT1B input Accessed by addressing Low on first op code a STATUS fetch of instruction par SSTOPRE Olu Cento Register 22 PE7 Bitwise or parallel pro I7 control or slave port grammable I O chip select SCS 23 26 A 3 0 Rabbit 2000 address bus User s Manual 7 Table 1 RabbitCore RCM2300 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes Bytewide 1 8 PA 0 7 programmable parallel Slave part dala bus SD0 SD7 I O 9 RESET Reset output Reset input E Weak UNE driven externally 10 P
4. 23 header footprint 25 headers 25 physical mounting 25 Prototyping Board 34 Rabbit 2000 DC characteris TICS aco teet Gies 28 Rabbit 2000 timing diagram E E ese edet oda 27 relative pin 1 locations 25 spectrum spreader 12 subsystems digital inputs and outputs 5 switching modes 16 60 RabbitCore RCM2300 SCHEMATICS 090 0119 RCM2300 Schematic www rabbitsemiconductor com documentation schemat 090 0119 pdf 090 0122 RCM2200 RCM2300 Prototyping Board Schematic www rabbitsemiconductor com documentation schemat 090 0122 pdf 090 0128 Programming Cable Schematic www rabbitsemiconductor com documentation schemat 090 0128 pdf The schematics included with the printed manual were the latest revisions available at the time the manual was last revised The online versions of the manual contain links to the latest revised schematic on the Web site You may also use the URL information provided above to access the latest schematics directly User s Manual 61
5. 7 9 external memory 54 SMODEO 9 11 programming port 49 keypad and LCD connec SMODEI 9 11 pinout TOMS siriaca 53 digital inputs 9 programming cable 48 RS 232 RS 485 serial com digital outputs 9 programming port 48 munication 52 dimensions Prototyping Board 37 serial communication 10 Prototyping Board 34 RCM2300 serial ports sess 10 Dynamic C e 15 Tic dara pur 6 programming port 10 add on modules 20 pm 6 software libraries segni 17 power supplies 4l TO drivers ari 17 telephone based technical chip select circuit 45 libraries ene 17 SUPPOLT Lese 20 Program Mode 16 PACKET LIB 17 upgrades and patches 20 switching modes 16 RS232 LIB sar i7 User s Manual 59 readUserBlock 13 sample programs 19 PONG C essem 19 serial communication driv CIS inietta 17 writeUserBlock 13 specifications 21 bus loading 26 digital I O buffer sourcing and sinking limits 29 dimensions 22 electrical mechanical and en vironmental 24 exclusion zone
6. Table A 2 lists the capacitance for the various Rabbit 2000 I O ports with SRAM and flash memory connected Table A 2 Capacitance of Rabbit 2000 I O Ports with External Memory Input Output I O Ports Capacitance Capacitance pF pF Parallel Ports A to E 12 14 Data Lines D0 D7 30 32 Address Lines A0 A12 32 Table A 3 lists the external capacitive bus loading for the various Rabbit 2000 output ports Be sure to add the loads for the devices you are using in your system and verify that they do not exceed the values in Table A 3 Table A 3 External Capacitive Bus Loading 40 C to 85 C Clock Speed Maximum External GI ise MHz Capacitive Loading pF ART 22 1 50 D 7 1 i E 22 1 100 for 55 ns flash D 71 Or ns Ilas AO 22 1 1 DO 00 PD 3 0 22 1 100 PA 7 0 PB 7 6 PC 6 2 0 22 1 90 PD 7 0 PE 7 0 All data address and I O lines with clock 11 06 100 doubler disabled The values from the table above are derived using 55 ns flash memory and 70 ns SRAM memory access times External capacitive loading can be improved by 10 pF for commercial temperature ranges but do not exceed 100 pF See the AC timing specifica tions in the Rabbit 2000 Microprocessor Users Manual for more information 26 RabbitCore RCM2300 Figure A 4 shows a typical timing diagram for the Rabbit 2000 microprocessor external memory read and write cycles External I O Read
7. 23 Table A 1 lists the electrical mechanical and environmental specifications for the RCM2300 Table A 1 RabbitCore RCM2300 Specifications Parameter Specification Microprocessor Rabbit 2000 at 22 1 MHz Flash Memory 256K SRAM 128K Backup Baiteby Connection for user supplied backup battery to support RTC and SRAM General Purpose UO 29 parallel I 0 lines grouped in five 8 bit ports shared with serial ports 17 configurable I O 8 fixed inputs 4 fixed outputs Additional Inputs 2 startup mode reset Additional Outputs Status reset Memory I O Interface 4 address lines 8 data lines I O read write extra address and buffer enable via separate connections Serial Ports Four 5 V CMOS compatible ports Two ports are configurable as clocked ports one is a dedicated RS 232 programming port Serial Rate Max burst rate CLK 32 Max sustained rate CLK 64 Slave Interface A slave port allows the RCM2300 to be used as an intelligent peripheral device slaved to a master processor which may either be another Rabbit 2000 or any other type of processor Real Time Clock Yes Five 8 bit timers cascadable in pairs one 10 bit timer with 2 match registers Dus that each have an interrupt Watchdog Supervisor Yes Power 4 75 V to 5 25 V DC 108 mA Operating Temperature 40 C to 85 C Humidity 5 to 95 noncondensing Connectors Two ID
8. RabbitCore RCM2300 C Programmable Module User s Manual 019 0099 030731 C RabbitCore RCM2300 User s Manual Part Number 019 0099 030731 C Printed in U S A 2001 2003 Z World Inc All rights reserved Z World reserves the right to make changes and improvements to its products without providing notice Trademarks Rabbit and Rabbit 2000 are registered trademarks of Rabbit Semiconductor RabbitCore is a trademark of Rabbit Semiconductor Dynamic C is a registered trademark of Z World Inc Z World Inc Rabbit Semiconductor 2900 Spafford Street 2932 Spafford Street Davis California 95616 6800 Davis California 95616 6800 USA USA Telephone 530 757 3737 Telephone 530 757 8400 Fax 530 757 3792 Fax 530 757 8402 www zworld com www rabbitsemiconductor com RabbitCore RCM2300 TABLE OF CONTENTS Chapter 1 Introduction 1 1 1 RabbitCore RCM2300 Features enne enne nee enn enne enne enter issie neseser teen ttn nen tenens 1 1 2 Advantages of the RabbitCore RCM2300 ie 2 1 3 Development and Evaluation Tools ie 2 1 4 How to Use This Man al setio aet etre a HE Eten PE eH RR 3 1 4 1 Additional Product Information esses enne enne tenen entrent nene n nentes 3 1 4 2 Additional Reference Information esses eene nennen enne enne 3 1 4 3 Using Online Documentation ceo reote trees tepore tee sitio cri aree EaR 3
9. Chapter 2 Hardware Reference 5 2 1 RCM2300 Digital Inputs and Outputs eese nennen nemen nennen nne nennen nene 5 2 1 1 Dedicated Inputs PE 9 2 1 2 Dedicated Outputs eme aE eE EEEE EEEE EE EEE EEEE EE E CEPR teens 9 2 1 3 Memory VO ntegfaGe ssi t tiit ette orit aiar diniego 9 2 14 Other Inputs and Outputs 4 ricette Ai EE EAE EATE AR a aS 9 2 2 Serial IUD E 10 2 2 1 Serial POTTS M EEET 10 2 2 2 Programming POLL 12 emeret ERE EE EEEE EEEE AAA iEn 10 2 3 Other HardWaret ivicinn ii abbina n nina EEEE EEEE EAE NEAR E EEE SENE EE EKE RE EEE EESE EEEE 12 pM MEG dba m 12 2 9 2 SPCCUUM SPIEAdet E P 12 2 4 Memory lai alga 13 DAI SRAM ina 13 2 4 2 Flash EPROM 6 onore ei eer peior n ii ela 13 24 3 Dynamic C BIOS Source Files aceti nnne ea 13 Chapter 3 Software Reference 15 3 1 More About Dynamit GC etes ertt mie E ii ERE EEEE EEEE E OEE E Ee Eae EEES 15 3 2 Propramming Cables P ani ia aiar 16 3 2 1 Changing from Program Mode to Run Mode e 16 3 2 2 Changing from Run Mode to Program Mode ener enn 16 3 3 Dynamic C Labraries tini EDO Cete tied teo 17 ER oT 17 3 3 2 Serial Communication Drivers iii 17 3 4 Sample Pro Sram essorer reee ee iere e Feo nere eee Eee EE Sa e ERN seuss Tee PESEE EEA ESEAS aa rE EEE EEA Tess 19 3 3 Upgrading Dynamit C
10. 18 pin configurations 49 B F pino t i cnet 48 used as diagnostic port 48 backup battery features sees 1 2 Prototyping Board installing onboard battery 42 flash memory addresses adding RS 232 transceiver 38 via header J5 41 user blocks 13 attach modules 39 via optional header 43 dimensions 34 battery life sss 43 l header JP1 location 36 battery backup circuit VO buffer sourcing and sinking optional connections to Rabbit external battery connec limits NAMEN 29 200 pan NGN QUUS ia 38 tons iii 41 43 PINOUT i 37 reset generator 44 J power supply 35 bus loading 26 prototyping area 37 jumper configurations 31 specifications 34 C JP1 flash memory size 31 Vcc and GND traces 37 JP2 flash memory bank clock doubler iii 12 SERA 13 31 R i di IHIORAFASGAROnS nie a Rabbit subsystems 2 D M Run Mode 16 Develop ment Kit Jenn 7 manuals sccnia sian 3 dn di DeviceMate 38 39 S digital I O P I O buffer sourcing and sink sample circuits 51 ing limits sess 29 physical mounting 25 D A converter 55 memory interface 9 pin configurations
11. 5 RCM2300 Areas Receiving Conformal Coating Any components in the conformally coated area may be replaced using standard soldering procedures for surface mounted components A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants NOTE For more information on conformal coatings refer to Rabbit Semiconductor Technical Note 303 Conformal Coatings 30 RabbitCore RCM2300 A 6 Jumper Configurations Figure A 6 shows the header locations used to configure the various RCM2300 options via jumpers Top Side spi fur2 e Figure A 6 Location of RCM2300 Configurable Positions Table A 7 lists the configuration options Table A 7 RCM2300 Jumper Configurations ER Factory Header Description Pins Connected Default 1 2 128K 256K x JP1 Flash Memory Size 2 3 512K 1 2 Normal Mode x JP2 Flash Memory Bank Select 2 3 Bank Mode NOTE The jumper connections are made using 0 surface mounted resistors User s Manual 31 32 RabbitCore RCM2300 APPENDIX B PROTOTYPING BOARD Appendix B describes the features and accessories of the Proto typing Board and explains the use of the Prototyping Board to demonstrate the RCM2300 and to build prototypes of your own circuits User s Manual 33 B 1 Mechanical Dimensions and Layout Figure B 1 shows the mechanical dimensions and layout for the RCM2300 Prototyping B
12. Dynamic C User s Manual and Technical Note 213 Rabbit 2000 Serial Port Software for more details on serial communication User s Manual 17 3 3 2 1 External Interrupts The Rabbit 2000 microprocessor has four external interrupt inputs on Parallel Port E which is accessed through pins PEO PE1 PE4 and PES on header J4 These pins may be used either as I O ports or as external interrupt inputs Earlier versions of the Rabbit 2000 microprocessor labeled IQIT or 1027 would occa sionally lose an interrupt request when one of the interrupt inputs was used as a pulse counter See Technical Note 301 Rabbit 2000 Microprocessor Interrupt Problem for further infor mation on how to work around this problem if you purchased your RCM2200 before July 2002 and the Rabbit 2000 microprocessor is labeled JQIT or IQ2T NOTE Interrupts on RCM2000 series RabbitCore modules sold after July 2002 work correctly and do not need this workaround 18 RabbitCore RCM2300 3 4 Sample Programs Sample programs are provided in the Dynamic C Samples folder which is shown below Open 2 x Look in 3 Samples f e Ei CJ Slice FP BENCHMARK C Rem2100 CJ Sysclock ge GLOBAL INIT C e Rem2200 E tepip J INDIRECTCALLS C Rtclock E Timerb LOW_POWER C e Rtdk C Vdriver A MEMORY_USAGE C Serial A mem E PONG c E n ix Files of type Source Files c lib Se Cancel The various folders contain sp
13. Manual provides more information about the boot strap mode The programming port is used to start the RCM2300 in a mode where it will download a program from the port and then execute the program The programming port transmits information to and from a PC while a program is being debugged in circuit The RCM2300 can be reset from the programming port via the RES_IN line The Rabbit 2000 status pin is also presented to the programming port The status pin is an output that can be used to send a general digital signal The clock line for Serial Port A is presented to the programming port which makes syn chronous serial communication possible All the programming port pins except the Serial Port A clock line are duplicated on the 26 pin headers 10 RabbitCore RCM2300 2 2 2 1 Alternate Uses of the Programming Port The programming port may also be used as an application port with the DIAG connector on the programming cable All three clocked Serial Port A signals are available for use as e a synchronous serial port e an asynchronous serial port with the clock line usable as a general CMOS input two general CMOS inputs and one general CMOS output Two startup mode pins SMODEO and SMODEI are available as general CMOS inputs after they are read during the initial boot up The logic state of these two pins is very important in determining the startup procedure after a reset RES IN is an external input used to reset the R
14. RabbitCore RCM2300 B 2 Power Supply The RCM2300 requires a regulated 5 V 0 25 V DC power source to operate Depending on the amount of current required by the application different regulators can be used to supply this voltage The Prototyping Board has an onboard 7805 or equivalent linear regulator that is easy to use Its major drawback is its inefficiency which is directly proportional to the voltage drop across it The voltage drop creates heat and wastes power A switching power supply may be used in applications where better efficiency is desir able The LM2575 is an example of an easy to use switcher This part greatly reduces the heat dissipation of the regulator The drawback in using a switcher is the increased cost The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2 as shown in Figure B 2 LINEAR POWER SUPPLY J5 Vcc x 1 w RAw D DCIN IE zz 2 y 1 U1 3 O 3 e 1N5819 c1 3 C2 NE T 10 uF T 100 nF Figure B 2 Prototyping Board Power Supply B 3 Using the Prototyping Board The Prototyping Board is actually both a demonstration board and a prototyping board As a demonstration board it can be used to demonstrate the functionality of the RCM2300 right out of the box without any modifications to either board There are no jumpers or dip switches to configure or misconfigure on the Prototyping Board so that the initial
15. User s Manual 51 E 1 RS 232 RS 485 Serial Communication Sample Program PUTS C in SAMPLES RCM2300 TXD RXD TXC RabbitCore RCM2300 100 nF J4 100 nF a VB PCO coll PCI _ oe PC2 LB PC3 RabbitCore RCM2300 Jaf SP483EN RXC Figure E 1 Sample RS 232 and RS 485 Circuits 52 RabbitCore RCM2300 E 2 Keypad and LCD Connections RabbitCore VCC RCM2300 10 ko resistors J5 10 PBO O O 11 PB2 O a 12 PB3 n n 13 PB4 O O 14 PB5 O O J4 4 PC1 O O 10 PD3 O QO 11 PD4 O oO Figure E 2 Sample Keypad Connections Sample Program KEYLCD C in SAMPLES RCM2300 RabbitCore VLC RCM2300 GS gS gS 9 gS a gt ge EL gc 2 nc ae FS SES 21 J5 ian vt N 2 PA aa O O 3 PA2 id n 4 PA3 a o 5 PA4 O O 6 PAS O O 7 PA6 O O 8 PA7 B O 2x20 LCD VLC VCC Figure E 3 Sample LCD Connections Sample Program KEYLCD C in SAMPLES RCM2300 When Parallel Port A is not being used for quick communication its resting quiescent value is used to set the LCD contrast level User s Manual 53 E 3 External Memory The sample circuit can be used to access 16 bytes on an external 64K memory device Larger SRAMS can be written to using this scheme by using other available Rabb
16. later if needed Table B 2 Prototyping Board Jumper Settings Header JP1 Pins Description 1 2 PE1 to LED DS2 3 4 PE7 to LED DS3 5 6 PB2 to Switch S2 7 8 PB3 to Switch S3 Note that the pinout at location JP1 on the bottom side of the Prototyping Board shown in Figure B 3 is a mirror image of the top side pinout The Prototyping Board provides the user with RCM2300 connection points brought out con veniently to labeled points at headers J7 and J8 on the Prototyping Board Small to medium circuits can be prototyped using point to point wiring with 20 to 30 AWG wire between the prototyping area and the holes at locations J7 and J8 The holes are spaced at 0 1 2 5 mm 36 RabbitCore RCM2300 J71J9 GND Bo VCC PCO oa PC1 PC2 o o PC3 TPOUT oo TPOUT LNK o o PD3 PD4 oo PD5 NORD g o IIOWR PEO o o PE1 TPIN ooo TPIN PE4 oo PES ACT oo PE7 A3 o o A2 A1 oo AO PAO PA2 PA4 PA6 RES PB2 PB4 PB7 D6 D4 D2 DO VCC J8 J10 PA1 PA3 PA5 PA7 PBO PB3 PB5 D7 D5 D3 D1 VBAT GND and 40 pin headers or sockets may be installed at J7 and J8 The pinouts for locations J7 and J8 which correspond to headers J1 and J2 are shown in Figure B 4 Note These pinouts correspond to the MASTER SLA
17. setup is very straightforward The Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM2300 Two LEDs DS2 and DS3 are connected to PEI and PE7 and two switches S2 and S3 are connected to PB2 and PB3 to demonstrate the interface to the Rabbit 2000 microprocessor Reset switch S1 is the hardware reset for the RCM2300 User s Manual 35 To maximize the availability of RCM2300 resources the demonstration hardware LEDs and switches on the Prototyping Board may be disconnected This is done by cutting the traces below the silk screen outline of header JP1 on the bottom side of the Prototyping Board Figure B 3 shows the four places where cuts should be made An exacto knife would work nicely to cut the traces Alternatively a small standard screwdriver may be carefully and forcefully used to wipe through the PCB traces Bottom Side JP1 33 eros OL B O OmJP1 0 88 B_2 ea O O B e 00 o MOOC O OO o 40000 om OO 90 9 33 00 00 HO 00 00 O o 00 i COD IA MASTER 0000 J8 gas f 00000000000 TES 00000000000 e Se eens OOOO0O0000000 00000000000 m Oooooooooooo 09900009008 3 9330000000 gt 8 Figure B 3 Where to Cut Traces to Permanently Disable Demonstration Hardware on Prototyping Board The power LED PWR and the RESET switch remain connected Jumpers across the appropriate pins on header JP1 can be used to reconnect specific demonstration hardware
18. slots which acts as the slave This master slave relationship is not used in the DeviceMate Development Kit where the target RCM2300 is plugged into the MASTER slots and the RCM2200 which is used as the DeviceMate hardware platform is plugged into the SLAVE slots The Prototyping and Demonstration Board serves only as a means to connect the two RabbitCore modules together to demonstrate the DeviceMate software features in Dynamic C User s Manual 39 40 RabbitCore RCM2300 APPENDIX C POWER SUPPLY Appendix C provides information on the current requirements of the RCM2300 and some background on the chip select circuit used in power management C 1 Power Supplies The RCM2300 requires a regulated 5 V 0 25 V DC power source The RabbitCore design presumes that the voltage regulator is on the user board and that the power is made available to the RabbitCore board through headers J4 and J5 An RCM2300 with no loading at the outputs operating at 22 1 MHz typically draws 108 mA The RCM2300 will consume an additional 10 mA when the programming cable is used to connect J1 to a PC C 2 Battery Backup The RCM2300 does not have a factory installed battery but there is provision for a cus tomer supplied battery to back up SRAM and keep the internal Rabbit 2000 real time clock running Header J5 shown in Figure C 1 allows access to an external battery This header makes it possible to connect an external 3 V power
19. supply External J5 Battery DO 23 _ 24 DES VCC 25 26 GND Figure C 1 External Battery Connections at Header J5 User s Manual 41 The RCM2300 has another battery option available A customer installed BR2577A GA backup battery can be soldered right on the RCM2300 as shown in Figure C 2 The nega tive battery connection is to the pin 3 hole in the area corresponding to header area J3 Figure C 2 Installing Onboard Backup Battery on RCM2300 NOTE Installing an onboard backup battery directly on the RCM2300 will prevent you from adding a through hole connector at position J3 pin 3 on the other side of the RCM2300 42 RabbitCore RCM2300 Alternatively you may wish to add a 2 pin connector with a 2 mm pitch for hooking up to an external backup battery as shown in Figure C 3
20. theoretical information for the Rabbit 20009 microprocessor when using the DIAG and PROG connectors on the programming cable The PROG connector is used only when the programming cable is attached to the pro gramming connector header J1 while a new application is being developed Otherwise the DIAG connector on the pro gramming cable allows the programming cable to be used as an RS 232 to CMOS level converter for serial communication which is appropriate for monitoring or debugging a RabbitCore system while it is running User s Manual 47 The programming port which is shown in Figure D 1 can serve as a convenient communi cations port for field setup or other occasional communication need for example as a diagnostic port If the port is simply to perform a setup function that is write setup infor mation to flash memory then the controller can be reset through the programming port and a cold boot is performed to start execution of a special program dedicated to this func tionality PROGRAMMING PORT PIN ASSIGNMENTS Rabbit PQFP pins are shown in parenthesis m e t RAEI DAN 3 0 e 2 GND ra vee ey eee 5 VI 5 70 e Rese n A AE c3 9 0 6 TXA 54 7 n c Programming Port 8 STATUS output 38 soko Pin Numbers 9 SMODEO 36 Mw GND 10 SMODE1 35 AA GND Figure D 1 Programming Port Pin Assignments When the PROG connector is used the RESET line can
21. BO Input Serial port clock CLKB input or output 11 PB2 Input Slave port write SWR LO 2 M2 PB3 Input Slave port read SRD o S 13 PB4 Input SAO I Slave port address lines 14 PB5 Input SA1 15 Slave port attention line si caput SLAVEATTN 16 23 D 7 0 Input Output Rabbit 2000 data bus 24 VBAT 3 V battery input 25 VCC 26 GND 8 RabbitCore RCM2300 2 1 1 Dedicated Inputs PBO is a general CMOS input when the Rabbit 2000 is either not using Serial Port B or is using Serial Port B in an asynchronous mode Four other general CMOS input only pins are located on PB2 PB5 These pins can also be used for the slave port in master slave communication between two processors PB2 and PB3 are slave write and slave read strobes while PB4 and PBS serve as slave address lines SAO and SAI and are used to access the slave registers PC1 PC3 and PC7 are general CMOS inputs only These pins can instead be selectively enabled to serve as the serial data inputs for Serial Ports D C and A SMODEO and SMODEI are read at start up and set the mode whereby instructions are fetched Thereafter the user may use and read these pins as inputs by reading the Slave Port Control Register NOTE Exercise care so that the SMODEO and SMODEI pins revert to the correct startup code when a reset occurs 2 1 2 Dedicated Outputs One of the general CMOS output only pins is located on PB7 PB7 can also be used with the slave port as the SLAVEATTN output This configura
22. C headers 2 x 13 2 mm pitch Board Size 1 15 x 1 60 x 0 48 29 mm x 41 mm x 12 mm 15 additional I O are available via less convenient 0 03 diameter through hole connection points 24 RabbitCore RCM2300 A 1 1 Headers The RCM2300 uses headers at J4 and J5 for physical connection to other boards J4 and J5 are 2 x 13 SMT headers with a 2 mm pin spacing J1 the programming port isa2 x 5 header with a 2 mm pin spacing Figure A 3 shows the footprint of another board that the RCM2300 would be plugged into These values are relative to the header connectors ui 54 pe i sE n XD T CK i 0 079 i 0 050 4 2 0 E 0 935 J4 1 3 Q J1 eu Mercer 0715 0 760 od ogs WS wS J20d 0 425 0130da OQ 10 8 3 3 Og E i E Y Y Y OW 0127 J3 OO 62 OG 0 605 RCM2300 Footprint 0 020 sq typ Q q 15 4 0 5 En 0 009 Q 0 960 0 2 PIT i 24 4 i 24 4 J5 f 0 079 __ _Y 2 0 Figure A 3 User Board Footprint for RabbitCore RCM2300 A 1 2 Physical Mounting An 9 32 or 14 7 mm metal standoff with insulating washers and a 4 40 screw is recom mended to attach the RCM2300 to a user board at the hole position shown in Figure A 3 User s Manual 25 A 2 Bus Loading You must pay careful attention to bus loading when designing an interface to the RCM2300 This section provides bus loading information for external devices
23. RCM2300 2 HARDWARE REFERENCE Chapter 2 describes the hardware components and principal hardware subsystems of the RCM2300 Appendix A Rabbit Core RCM2300 Specifications provides complete physical and electrical specifications 2 1 RCM2300 Digital Inputs and Outputs Figure 1 shows the subsystems designed into the RCM2300 PBO PB7 ee PDO PD2 PAO PA7 PB2 PB5 PB6 A PD7 Port D synch Serial Port B Serial Port B PEO PE2 PE4 PE5 Port E C d RABBIT PE3 PE6 2000 o vs PCO PC2 PC6 PC1 PC3 PC7 PC6 1 more output PB1 PC7 RES IN 2 more inputs Serial Ports A C amp D Programming Address Lines V EHE a HE o Serial Port A lt gt gt RP D wo Real Time Clock IO Control IOWR STATUS x WDO Watchdog BUFEN SMODEO Misc I O 7 Timers SMODE1 Slave Port Data Lines D0 D7 RESET Clock Doubler Backup Battery upport 1 VBAT available as a through hole connection point only is not provided on any factory installed header Figure 1 Rabbit Subsystems User s Manual The RCM2300 modules have two 26 pin headers to which cables can be connected or which can be plugged into matching sockets on a production device The pinouts for these connectors are shown in Figure 2 below
24. RING J Slaveport E PROGRAM Ei sys E COFUNC E RS232 Ei VDRIVER E COSTATE E RTCLOCK B XMEM E FFT E SLICE Fienme Files of type Source Files c lib Cancel There is no unique library that is specific to the RCM2300 The functions in the above libraries are described in the Dynamic C User s Manual 3 3 1 I O The RCM2300 was designed to interface with other systems and so there are no drivers written specifically for the I O The general Dynamic C read and write functions allow you to customize the parallel I O to meet your specific needs For example use WrPortI PEDDR amp PEDDRShadow 0x00 to set all the Port E bits as inputs or use WrPortI PEDDR amp PEDDRShadow OxFF to set all the Port E bits as outputs The sample programs in the Dynamic C SAMPLES RCM2300 directory provide further examples These functions are provided for convenience not speed User code should be written in assembly language when speed is important 3 3 2 Serial Communication Drivers The Prototyping Board has room for an RS 232 chip Dynamic C has two libraries to sup port serial communication RS232 LIB provides a set of circular buffer based functions and PACKET LIB provides packet based support Packets can be delimited by time gap 9th bit detection or special character detection Both the packet based and the circular buffer based routines are available in blocking and nonblocking cofunction flavors See the
25. SOIC component 38 RabbitCore RCM2300 B 3 2 Attach Modules to Prototyping Board Turn the RCM2300 module so that the Rabbit logo and the mounting hole are as shown in Figure B 7 below Align the module headers J4 and J5 into sockets J1 and J2 the MASTER slots on the Prototyping Board Press the module s pins firmly into the Prototyping Board headers RCM2300 coocoo mo 00 of HII Line up the mounting holes 09000 988 898 888 888 898 888 NOOOOOOOOOOOOC MASTER DI 600oQ9g0 90000000000000000000000000000000 a QOQOOOOOOOOOOOOOOOOOOOOOOOOOOO0O000 o0000000000000000000000000000000000 OOOOQOOOOOO 00000 0000000000000000 OOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOO Figure B 7 Install the RCM2300 on the Prototyping Board NOTE It is important that you line up the pins of the module headers exactly with the corresponding pins on the Prototyping Board The header pins may become bent or damaged if the pin alignment is offset and the module will not work Permanent elec trical damage to the module may also result if a misaligned module is powered up With the RCM2300 plugged into the MASTER slots it can act as the master relative to another RabbitCore RCM2200 or RCM2300 plugged into the SLAVE
26. VE positions respectively Figure B 4 RCM2300 Prototyping Board Pinout Top View The small holes are also provided for surface mounted components that may be installed to the right of the prototyping area There is a 2 4 x 4 through hole prototyping space available on the Prototyping Board VCC and GND traces run along the edge of the Prototyping Board for easy access A GND pad is also provided at the lower right for alligator clips or probes O00 OOOOOOOOQQpOOOOOOOOO OOOOOOOOQOOOOOOOOOO OOOOOOOO 000000000 0000000000000000000 OOOOOOOOOOOOOOOOOO 00000000000000000 0000000000000 0008 0000000000000 Oo Oo Oo Oo Oo Oo Oo Oo Oo Oo Oo Oo Oo Oo O O 00000000000000 00000000000000 00000000000000 00000000000000 Oo o O O Oo o Oo Oo Oo Oo Oo O Oo Oo OOOOOOOOOOOO 000000000000 000000000000 000000 Oo Oo Oo Oo O O O 00000000000 Oo OOOOOOOOOOOOOOO 000000000000000 Oo Oo O O O O Oo O O Oo o Oo O O O GND trace Figure B 5 VCC and GND Traces Along Edge of Prototyping Board User s Manual 37 B 3 1 Adding Other Components There is room on the Prototyping Board for a user supplied RS 232 transceiver chip at location U2 and a 10 pin header for serial interfacing to external devices at location J6 A Maxim MAX232 transceiver is recommended When adding the MA X232 transceiver at position U2 y
27. abbit 2000 microprocessor The status pin may also be used as a general CMOS output See Appendix D Programming Cable for more information User s Manual 11 2 3 Other Hardware 2 3 1 Clock Doubler The RCM2300 takes advantage of the Rabbit 2000 microprocessor s internal clock dou bler A built in clock doubler allows half frequency crystals to be used to reduce radiated emissions The 22 1 MHz frequency is generated using an 11 0592 MHz crystal The clock doubler is disabled automatically in the BIOS for crystals with a frequency above 12 9 MHz The clock doubler may be disabled if 22 1 MHz clock speeds are not required Disabling the Rabbit 2000 microprocessor s internal clock doubler will reduce power consumption and further reduce radiated emissions The clock doubler is disabled with a simple change to the BIOS as described below 1 Open the BIOS source code file RABBITBIOS C in the BIOS directory 2 Change the line define CLOCK DOUBLED 1 set to 1 to double the clock if XTAL 12 9MHz to read as follows define CLOCK DOUBLED 0 set to 1 to double the clock if XTAL 12 9MHz 3 Save the change using File Save 2 3 2 Spectrum Spreader RCM2300 boards with a Rabbit 2000 microprocessor labeled IQ4T or higher have a spec trum spreader which helps to mitigate EMI problems By default the spectrum spreader is on automatically for these boards when used with Dynamic C 7 30 or later versions but the s
28. al dimensions for the RCM2300 1 150 29 2 si 1 060 26 9 Yi Please refer to the RCM2300 footprint diagram later in this appendix for precise header Is 7 C4 Min HB rs EH crd E locations s Egeo 0 130 dia 3 30 Ss SE A ci i I 9 2a v O DUTT i 1 050 29 2 coc Y F L a l ey ca Y ot Il 1 600 40 6 Figure A 1 RabbitCore RCM2300 Dimensions 22 RabbitCore RCM2300 It is recommended that you allow for an exclusion zone of 0 04 1 mm around the RCM2300 in all directions when the RCM2300 is incorporated into an assembly that includes other printed circuit boards This exclusion zone that you keep free of other components and boards will allow for sufficient air flow and will help to minimize any electrical or EMI interference between adjacent boards An exclusion zone of 0 12 3 mm is recommended below the RCM2300 when the RCM2300 is plugged into another assembly using the shortest connectors for headers J4 and J5 Figure A 2 shows this exclusion zone Exclusion Zone Figure A 2 RCM2300 Exclusion Zone User s Manual
29. and LCD Connections i 53 E 3 External Memory ear nadia la A pa Lacie ansiosi ioni 54 E4 D A Converter oi ini e ao eles etre alienato 55 Notice to Users 57 Index 59 Schematics 61 RabbitCore RCM2300 1 INTRODUCTION The RabbitCore RCM2300 is a very small advanced core mod ule that incorporates the powerful Rabbit 2000 microprocessor flash memory static RAM and digital I O ports all on a PCB that is just 1 15 x 1 60 29 2 mm x 40 6 mm The RCM2300 has a Rabbit 2000 microprocessor operating at 22 1 MHz static RAM flash memory two clocks main oscillator and timekeeping and the circuitry necessary for reset and management of battery backup of the Rabbit 2000 s internal real time clock and the static RAM Two 26 pin headers bring out the Rabbit 2000 I O bus lines address lines data lines parallel ports and serial ports The RCM2300 receives its 5 V power from the user board on which it is mounted The RabbitCore RCM2300 can interface with all kinds of CMOS compatible digital devices through the user board 1 1 RabbitCore RCM2300 Features Small size 1 15 x 1 60 x 0 48 29 mm x 41 mm x 12 mm Microprocessor Rabbit 2000 running at 22 1 MHz 29 parallel I O lines 17 configurable for input or output 8 fixed inputs 4 fixed outputs 11 additional I O are available via less convenient 0 03 diameter through hole connec tion points 8 data lines D0 D7 4 address lines A0 A3 Memory I 0 rea
30. and the RabbitCore RCM2300 User s Manual this manual two higher level reference manuals are provided in HTML and PDF form on the accompa nying CD ROM Advanced users will find these references valuable in developing sys tems based on the RCM2300 modules e Dynamic C User s Manual e Rabbit 2000 Microprocessor User s Manual 1 4 3 Using Online Documentation We provide the bulk of our user and reference documentation in two electronic formats HTML and Adobe PDF We do this for several reasons We believe that providing all users with our complete library of product and reference manuals is a useful convenience However printed manuals are expensive to print stock and ship Rather than include and charge for manuals that every user may not want or pro vide only product specific manuals we choose to provide our complete documentation and reference library in electronic form with every Development Kit and with our Dynamic C development environment NOTE The most current version of Adobe Acrobat Reader can always be downloaded from Adobe s Web site at http www adobe com We recommend that you use ver sion 4 0 or later Providing this documentation in electronic form saves an enormous amount of paper by not printing copies of manuals that users don t need It reduces the number of outdated manuals we have to discard from stock as well and it makes providing a complete library of manuals an almost cost free option For one time or infre
31. ata storage Very small size 1 3 Development and Evaluation Tools A complete Development Kit which includes a Prototyping Board and Dynamic C devel opment software is available for the RCM2300 The Development Kit puts together the essentials you need to design an embedded microprocessor based system rapidly and effi ciently See the RabbitCore RCM2300 Getting Started Manual for complete information on the Development Kit 2 RabbitCore RCM2300 1 4 How to Use This Manual This user s manual is intended to give users detailed information on the RCM2300 mod ule It does not contain detailed information on the Dynamic C development environment Most users will want more detailed information on some or all of these topics in order to put the RCM2300 module to effective use 1 4 1 Additional Product Information Introductory information about the RCM2300 and its associated Development Kit and Prototyping Board will be found in the printed RabbitCore RCM2300 Getting Started Manual which is also provided on the accompanying CD ROM in both HTML and Adobe PDF format We recommend that any users unfamiliar with Z World products or those who will be using the prototyping board for initial evaluation and development begin with at least a read through of the Getting Started manual 1 4 2 Additional Reference Information In addition to the product specific information contained in the RabbitCore RCM2300 Getting Started Manual
32. be asserted by manipulating the serial port DTR line and the STATUS line can be read as DSR on the serial port The target can be restarted by pulsing reset and then after a short delay sending a special character string at 2400 bps To simply restart the BIOS the string 80h 24h 80h can be sent When the BIOS is started it can tell whether the programming cable is connected because the SMODE1 and SMODEO pins are sensed as being high This will cause the Rabbit 2000 to enter the bootstrap mode Alternatively the DIAG connector can be used on the programming port The RESET line and the SMODE1 and SMODEO pins are not connected when this connector is used and are pulled low by resistors on the target board The programming port is then enabled as a diagnostic port by polling the port periodically to see if communication needs to begin or to enable the port and wait for interrupts The pull up resistors on RXA and CLKA prevent spurious data reception that might take place if the pins floated If the clocked serial mode is used the serial port can be driven by using two toggling lines that can be driven and one line that can be sensed This allows a conversation with a device that does not have an asynchronous serial port but that has two output signal lines and one input signal line Once you establish that the programming port will never again be needed for program ming it is possible to use the programming port I O for additional VO lines Ta
33. ble D 1 lists the pins available for this alternate configuration 48 RabbitCore RCM2300 Table D 1 RabbitCore RCM2300 Programming Port Pinout Configurations Pin Pin Name Default Use Alternate Use Notes 1 RXA Serial Port A PC6 Input 2 GND 3 CLKA PB1 Bitwise or parallel programmable input 4 VCC 5 Connected to reset D 5 RESET Reset input only pet rator WI o T l6 TXA Serial Port A PC7 Output 8 STATUS Output Must be low when 2 PMODEN Bn RCM2300 boots up Must be low when 19 SMODEI Mipu RCM2300 boots up Table D 2 lists the locations of these programming port I O on headers J4 and J5 Table D 2 Locations of Programming Port I O on RCM2300 Headers J4 and J5 Programming Port Pin Pin Pin Name RXA 7 not connected GND 1 26 CLKA not connected not connected VCC 2 wn 29 gt RESET 3 not connected E 9 5 O TXA T 8 T not connected STATUS 21 not connected SMODEO 18 not connected SMODEI 17 not connected This is not the same reset that is on the programming port Refer to the schematic 090 0119 for more information User s Manual 49 50 RabbitCore RCM2300 APPENDIX E SAMPLE CIRCUITS This appendix details several basic sample circuits that can be used with the RCM2300 e RS 232 RS 485 Serial Communication Keypad and LCD Connections External Memory e D A Converter
34. cally in program mode when the PROG connector on the pro gramming cable is attached and is automatically in run mode when no programming cable is attached The DIAG connector of the programming cable may be used on header J1 of the RCM2300 with the board operating in the run mode This allows the programming port to be used as an application port See Appendix D Programming Cable for more information Program Mode Run Mode To PC COM di dd RESET RabbitCore when changing mode Short out pins 9 and 26 on header J5 OR Press RESET button if using Prototyping Board OR Remove then reapply power after removing or attaching programming cable Figure 3 Switching Between Program Mode and Run Mode 3 2 1 Changing from Program Mode to Run Mode 1 Disconnect the programming cable from header J1 of the RCM2300 2 Reset the RCM2300 You may do this as explained in Figure 3 The RCM2300 is now ready to operate in the run mode 3 2 2 Changing from Run Mode to Program Mode 1 Attach the programming cable to header J1 on the RCM2300 2 Reset the RCM2300 series You may do this as explained in Figure 3 The RCM2300 is now ready to operate in the program mode 16 RabbitCore RCM2300 3 3 Dynamic C Libraries With Dynamic C running click File gt Open and select Lib The following list of Dynamic C libraries will be displayed Open Lookin E Lb f ex tBioslib amp MATH STDIO Jrablib E PACKET Ez ST
35. cycle A 3 Rabbit 2000 DC Characteristics Table A 5 outlines the DC characteristics for the Rabbit 2000 at 5 0 V over the recom mended operating temperature range from T 40 C to 85 C Vpp 4 5 V to 5 5 V Table A 5 5 0 Volt DC Characteristics Symbol Parameter Test Conditions Min Typ Max Units Ig Input Leakage High Vin Vpn Vpp 5 5 V 10 uA bs Input Leakage Low V Vss Vpn 0 uA no pull up Vin Vpp or Vss I E OZ Output Leakage no pull up Ven sae Y 10 10 uA Vit CMOS Input Low Voltage 0 3 x Vpp Vin CMOS Input High Voltage 0 7 x Vpp Vr CMOS Switching Threshold Vpp 5 0 V 25 C 24 V IoL See Table A 6 VoL CMOS Output Low Voltage sinking 0 2 0 4 V Vpp 4 5 V Io See Table A 6 VoH CMOS Output High Voltage sourcing 0 7x Vpp 42 V Vbp 4 5 V 28 RabbitCore RCM2300 A 4 I O Buffer Sourcing and Sinking Limit Unless otherwise specified the Rabbit I O buffers are capable of sourcing and sinking 8 mA of current per pin at full AC switching speed Full AC switching assumes a 22 1 MHz CPU clock and capacitive loading on address and data lines of less than 100 pF per pin Address pin AO and data pin DO are rated at 16 mA each Pins A1 A4 and D1 D7 are each rated at 8 mA The absolute maximum operating voltage on all I O is Vpp 0 5 V or 5 5 V Table A 6 shows the AC and DC output drive limits of the parallel I O buffers when t
36. d write External reset input Five 8 bit timers cascadable in pairs and one 10 bit timer with two match registers 256K flash memory 128K SRAM Real time clock Watchdog supervisor User s Manual 1 Provision for customer supplied backup battery either onboard or via header connec tions e Four CMOS compatible serial ports All the serial ports can be configured asynchro nously and two serial ports can be configured synchronously if so desired The maxi mum asynchronous baud rate is 691 200 bps Dynamic C drivers are capable of handling up to the sustained rate of 345 600 bps and the maximum synchronous baud rate is 5 5296 Mbps user written drivers can sustain a rate of 2 7648 Mbps One syn chronous port clock line is available only on the programming header The programming port is also routed to the 26 pin headers which allows the user board the ability to reprogram the RCM2300 Appendix A RabbitCore RCM2300 Specifications provides detailed specifications for the RCM2300 1 2 Advantages of the RabbitCore RCM2300 e Fast time to market using a fully engineered ready to run microprocessor core Competitive pricing when compared with the alternative of purchasing and assembling individual components Easy C language program development and debugging including rapid production loading of programs Generous memory size allows large programs with tens of thousands of lines of code and substantial d
37. e cycles NOTE An application can be developed in RAM but cannot run standalone from RAM after the programming cable is disconnected All standalone applications can only run from flash memory NOTE Do not depend on the flash memory sector size or type Due to the volatility of the flash memory market the RCM2300 and Dynamic C were designed to accommo date flash devices with various sector sizes The disadvantage of using flash memory for debug is that interrupts must be disabled for approximately 5 ms whenever a break point is set in the program This can crash fast inter rupt routines that are running while you stop at a break point or single step the program Flash memory or RAM is selected on the Options Compiler menu Dynamic C provides a number of debugging features You can single step your program either in C statement by statement or in assembly language instruction by instruction You can set break points where the program will stop on any statement You can evaluate watch expressions A watch expression is any C expression that can be evaluated in the context of the program If the program is at a break point a watch expression can view any expression using local or external variables If a periodic call to runwatch is included in your program you will be able to evaluate watch expressions by hitting lt Ctrl U gt with out stopping the program User s Manual 15 3 2 Programming Cable The RCM2300 is automati
38. ecific sample programs that illustrate the use of the corre sponding Dynamic C libraries For example the sample program PONG C demonstrates the output to the Dynamic C STDIO window The sample programs in the Dynamic C SAMPLES RCM2300 directory demonstrate the basic operation of the RCM2300 Open 2 x Look in E Remz300 y fil ek S FLASHLED c TOGGLELED C Files of type Source Files c lib Cancel Follow the instructions included with the sample program to connect the RCM2300 and the other hardware identified in the instructions To run a sample program open it with the File menu if it is not still open compile it using the Compile menu and then run it by selecting Run in the Run menu The RCM2300 must be in Program Mode see Section 3 2 Programming Cable and must be connected to a PC using the programming cable More complete information on Dynamic C is provided in the Dynamic C User s Manual User s Manual 19 3 5 Upgrading Dynamic C Dynamic C patches that focus on bug fixes are available from time to time Check the Web sites e www zworld com support Or www rabbitsemiconductor com support for the latest patches workarounds and bug fixes The default installation of a patch or bug fix is to install the file in a directory folder dif ferent from that of the original Dynamic C installation Z World recommends using a dif ferent directory so that you ca
39. ed as Serial Ports A B C and D All four serial ports can sustain their operation in an asynchronous mode up to the baud rate of the system clock divided by 64 The maximum burst rate for an asynchronous byte can be as high as the system clock divided by 32 An asynchronous port can handle 7 or 8 data bits A 9th bit address scheme where an additional bit is sent to mark the first byte of a message is also supported Serial Ports A and B can also be operated in the clocked serial mode In this mode a clock line synchronously clocks the data in or out Either of the two communicating devices can supply the clock When the Rabbit 2000 provides the clock the sustained baud rate can be up to the system clock frequency divided by or 2 76 Mbps for a 22 1 MHz clock speed The maximum burst rate for a byte can be as high as the system clock divided by 4 Serial Port A s clock pin is available only on the programming port and so is likely to be inconvenient to interface with 2 2 2 Programming Port Serial Port A has special features that allow it to cold boot the system after reset Serial Port A is also the port that is used for software development under Dynamic C The RCM2300 has a 10 pin program header labeled J1 The Rabbit 2000 startup mode pins SMODEO SMODE 1 are presented to the programming port so that an externally connected device can force the RCM2300 to start up in an external bootstrap mode The Rabbit 2000 Microprocessor User s
40. er and lower halves of the 256K flash in such a way that both programs start at logical address 0000 This is useful for applications that require a resident download manager and a separate downloaded program See Technical Note 218 Implementing a Serial Download Man ager for a 256K Flash for details NOTE Only the Normal Mode which corresponds to using the full code space is sup ported at the present time 2 4 3 Dynamic C BIOS Source Files The Dynamic C BIOS source files handle different standard RAM and flash EPROM sizes automatically User s Manual 13 14 RabbitCore RCM2300 3 SOFTWARE REFERENCE Dynamic C is an integrated development system for writing embedded software It runs on an IBM compatible PC and is designed for use with Z World controllers and other controllers based on the Rabbit microprocessor Chapter 3 provides the libraries function calls and sample programs related to the RCM2300 3 1 More About Dynamic C Dynamic C has been in use worldwide since 1989 It is specially designed for program ming embedded systems and features quick compile and interactive debugging in the real environment A complete reference guide to Dynamic C is contained in the Dynamic C User s Manual You have a choice of doing your software development in the flash memory or in the static RAM included on the RCM2300 The advantage of working in RAM is to save wear on the flash memory which is limited to about 100 000 writ
41. he Rabbit 2000 is used in the RCM2300 Table A 6 I O Buffer Sourcing and Sinking Capability Output Drive Pin Name Sourcing Sinking Limits mA Full AC Switching ii DS utpu O ame P SRC SNK incl SRC SNK PA 7 0 8 8 12 12 PB 7 1 0 8 8 12 12 PC 6 2 0 8 8 12 12 PD 7 4 8 8 12 12 PD 3 0 16 16 Polen PE 7 0 8 8 12 12 The maximum DC sourcing current for I O buffers between Vpp pins is 112 mA T The maximum DC sinking current for I O buffers between Vss pins is 150 mA t The maximum DC output drive on I O buffers must be adjusted to take into consideration the current demands made my AC switching outputs capacitive loading on switching outputs and switching voltage The current drawn by all switching and nonswitching I O must not exceed the limits specified in the first two footnotes The combined sourcing from Port D 7 0 may need to be adjusted so as not to exceed the 112 mA sourcing limit require ment specified in the first footnote User s Manual 29 A 5 Conformal Coating The area around the crystal oscillator has had the Dow Corning silicone based 1 2620 conformal coating applied The conformally coated area is shown in Figure A 5 The con formal coating protects these high impedance circuits from the effects of moisture and contaminants over time Conformally coated area Figure A
42. it 2000 ports parallel ports A to E as address lines to create up to four thousand 16 byte pages RabbitCore RCM2300 A0 A3 Vcc Figure E 4 Sample External Memory Connections Sample Program EXTSRAM C in SAMPLES RCM2300 54 RabbitCore RCM2300 E 4 D A Converter The output will initially be 0 V to 10 05 V after the first inverting op amp and 0 V to 10 05 V after the second inverting op amp All lows produce 0 V out FF produces 10 V out The output can be scaled by changing the feedback resistors on the op amps For example changing 5 11 kQ to 2 5 kQ will produce an output from 0 V to 5 V Op amps with a very low input offset voltage are recommended 22 pF 22 pF J TI IT 5 11 kQ 10 ka 649 ko 10 ka 324 ko 162 ko EES 806 ka V gt 12V 40 2 ko IAS ke VESE 2V 4 99 ka 20 ko at 10 ka 5 11 k0 Figure E 5 Sample D A Converter Connections User s Manual 55 56 RabbitCore RCM2300 NOTICE TO USERS Z WORLD PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS UNLESS A SPECIFIC WRITTEN AGREEMENT REGARDING SUCH INTENDED USE IS ENTERED INTO BETWEEN THE CUSTOMER AND Z WORLD PRIOR TO USE Life support devices or systems are devices or systems intended for surgical implantation into the body or to sustain life and whose failure to perform when properly used in accordance with ins
43. n verify the operation of the patch without overwriting the existing Dynamic C installation If you have made any changes to the BIOS or to libraries or if you have programs in the old directory folder make these same changes to the BIOS or libraries in the new directory containing the patch Do not simply copy over an entire file since you may overwrite a bug fix of course you may copy over any programs you have written Once you are sure the new patch works entirely to your satisfaction you may retire the existing installation but keep it available to handle legacy applications 3 5 1 Upgrades Dynamic C installations are designed for use with the board they are included with and are included at no charge as part of our low cost kits Dynamic C is a complete software development system but does not include all the Dynamic C features Z World also offers add on Dynamic C modules containing the popular uC OS II real time operating system as well as PPP Advanced Encryption Standard AES and other select libraries In addi tion to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase 20 RabbitCore RCM2300 APPENDIX A RABBITCORE RCM2300 SPECIFICATIONS Appendix A provides the specifications for the RCM2300 and describes the conformal coating User s Manual 21 A 1 Electrical and Mechanical Characteristics Figure A 1 shows the mechanic
44. no extra wait states k TI gt lt Tw gt k T2 gt digli ee A 15 0 gt T CSx IOCSx lt Tiocsx Tiocsx NORD l gt ie TIORD Tiogp lt BUFEN gt TBUFEN TBUFEN setup gt lt D 7 0 hold External I O Write no extra wait states lt T1 gt lt Tw gt lt T2 gt mel pd qq E A 15 0 is I Tagr CSx IOCSx Tiocsx JIIOWR lt TiowR Tiowr gt lt BUFEN gt FTBUFEN TguFEN gt D 7 0 gt Tpuzv Tpvuz Figure A 4 Memory Read and Write Cycles Tag is the time required for the address output to reach 0 8 V This time depends on the bus loading Tsep is the data setup time relative to the clock Tyetyp is specified from 3096 7096 of the V pp voltage level User s Manual 27 Table A 4 lists the parameters shown in these figures and provides minimum or measured values Table A 4 Memory and External I O Read Write Parameters Parameter Description Value 5 T Time from CPU clock rising Max 7 ns 20 pF 5 V 10 ns 3 3 V E adi edge to address valid 4ns 70 pF 5 V 19 ns 3 3 V da Tsetup Data read setup time Min 2ns 5V 3 ns 3 3 V a E Thold Data read hold time Min Ons 2 p Time from CPU clock rising Max 7 ns 20 pF 5 V 10 ns 3 3 V 2 adr edge to address valid 4ns 70pF 5V 19 ns 3 3 V m Data write hold time from WEx o T 1 hold or IOWR Min CPU clock
45. oard id B GNDTXB RXB RS232 BO0000092 XL OKY 9r OOOO DODO 03 PDS pri ves D0000000 000000000000 OOOOOOOO OOOOOOOOOOOO TE i Pez Ee 2 00000000000000 0000000000000000000000000000000 OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOQOOOOOOOOOOOOOOOOOOOOOOOO 0 000000000000000000000000d eNO D00000000 E OOOO of Bes NLS 4 25 108 addd FBI PI d 000 000000000000 al Ig d TE E RA Figure B 1 RCM2300 Prototyping Board Dimensions Table B 1 lists the electrical mechanical and environmental specifications for the Proto typing Board Table B 1 RCM2300 Prototyping Board Specifications Parameter Specification Board Size 4 25 x 5 25 x 1 00 108 mm x 133 mm x 25 mm Operating Temperature 40 C to 70 C Humidity 5 to 95 noncondensing Input Voltage 7 5 V to 25 V DC Maximum Current Draw including user added circuits 1 A at 12 V and 25 C 0 7 A at 12 V and 70 C Prototyping Area 2 4 x 4 0 61 mm x 102 mm throughhole 0 1 spacing additional space for SMT components Corner Standoffs Spacers 4 accept 6 32 x 3 8 screws 34
46. oerce rire EE S E EE ESKES PE SE ERRES Ea 20 De del UporadeS MP 20 Appendix A RabbitCore RCM2300 Specifications 21 A 1 Electrical and Mechanical Characteristics i 22 uM E 25 ZW EB Physical Mounting M S 25 nodu M 26 A 3 Rabbit 2000 DC CharacteriStcs iii 28 A 4 I O Buffer Sourcing and Sinking Limit eren nennen nennen nennen enne 29 A5 Conformal Coating areeiro tige be ERU EL tUe pecie Pisae ven eL reor Ie eoe ei 30 AG JUMPer COMPPULATIONS ERE 31 User s Manual Appendix B Prototyping Board 33 B 1 Mechanical Dimensions and Layout e 34 B 2 Power Supply cinte li iii uil n ee em RD aaa ina 35 B 3 Using the Prototyping Board alia i 35 B 3 1 Adding Other Components i 38 B 3 2 Attach Modules to Prototyping Board essere eene nennen 39 Appendix C Power Supply 41 Col Power Supplies ili allo Lana si IRE deae vedo 41 C2 Battery Backup oo einge ore e HO REO E REED ERI EG eU t erede 41 C 2 1 Battery Backup Circuits iiie ala Eu nada ail donevencsbooss 44 2 2 Reset Generator ose aaa IDE eU eom e vem eem eR 44 C 3 Chip Select Circuits eee eiie et REDI er eU rta ce eet e tet E 45 Appendix D Programming Cable 47 Appendix E Sample Circuits 51 E 1 RS 232 RS 485 Serial Communication i 52 E 2 Keypad
47. ou must also add 100 nF charge storage capacitors at positions C3 C7 as shown in Figure B 6 Qu OOOOOOOOOO 100 nF storage capacitors Figure B 6 Location for User Supplied RS 232 Transceiver and Charge Storage Capacitors on Back Side of Prototyping Board NOTE The board that is supplied with the DeviceMate Development Kit already has the RS 232 chip and the storage capacitors installed and is called the DeviceMate Demon stration Board There are two sets of pads at the lower right corner of the Prototyping Board that can be used for surface mount prototyping SOIC devices The silk screen layout separates the rows into six 16 pin devices three on each side However there are pads between the silk screen layouts giving the user two 52 pin 2x26 SOIC layouts with 50 mil pin spacing There are six sets of pads that can be used for 3 to 6 pin SOT23 packages There are also 60 sets of pads that can be used for SMT resistors and capacitors in an 0805 SMT package Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered standard wire wrap wire can be soldered in for point to point wiring on the Prototyping Board Because the traces are very thin carefully determine which set of holes is connected to which surface mount pad There is also a space above the space for the RS 232 transceiver that can accommodate a large surface mounted
48. pectrum spreader may also be turned off or set to a stronger setting The means for doing so is through a simple change to the following BIOS line in a way that is similar to the clock doubler described above define ENABLE SPREADER 1 Set to 0 to disable spectrum spreader 1 to enable normal spreading or 2 to enable strong spreading NOTE The strong spectrum spreading setting is unnecessary for the RCM2300 There is no spectrum spreader functionality for RCM2300 boards with Rabbit 2000 chips labeled IQ3T or earlier or with a version of Dynamic C prior to 7 30 12 RabbitCore RCM2300 2 4 Memory 2 4 1 SRAM The RCM2300 is designed to accept 128K of SRAM packaged in an SOIC case 2 4 2 Flash EPROM The RCM2300 is also designed to accept 128K to 512K of flash EPROM packaged in a TSOP case NOTE Z World recommends that any customer applications should not be constrained by the sector size of the flash EPROM since it may be necessary to change the sector size in the future Writing to arbitrary flash memory addresses at run time is also discouraged Instead define a user block area to store persistent data The functions writeUserBlock and readUserBlock are provided for this A Flash Memory Bank Select jumper configuration option based on 0 surface mounted resistors exists at JP2 This option used in conjunction with some configuration macros allows Dynamic C to compile two different co resident programs for the upp
49. pically 10 mV when power is supplied to the RCM2300 Figure C 4 shows the RCM2300 battery backup circuit D3 VBAT EXT gt External Battery Figure C 4 RCM2300 Battery Backup Circuit C 2 2 Reset Generator The RCM2300 uses a reset generator U1 to reset the Rabbit 2000 microprocessor when the voltage drops below the voltage necessary for reliable operation The reset occurs between 4 50 V and 4 75 V typically 4 63 V The RCM2300 has a reset output pin 9 on header J5 This reset output can be sensed externally The output can also be overridden and forced into any state by using a circuit capable of providing 5 mA of output current 44 RabbitCore RCM2300 C 3 Chip Select Circuit The RCM2300 has provision for battery backup which kicks in to keep VRAM from dropping below 2 V When the RCM2300 is not powered the battery keeps the SRAM memory contents and the real time clock RTC going The SRAM has a powerdown mode that greatly reduces power consumption This powerdown mode is activated by raising the chip select CS signal line Normally the SRAM requires Vcc to operate However only 2 V is required for data retention in powerdown mode Thus when power is removed from the circuit the battery voltage needs to be provided to both the SRAM power pin and to the CS signal line The CS control switch accomplishes this task for the CS signal line Figure C 5 shows a schematic of the chip selec
50. quent reference electronic documents are more convenient than printed ones User s Manual 3 1 4 3 1 Finding Online Documents The online documentation is installed along with Dynamic C and an icon for the docu mentation menu is placed on the workstation s desktop Double click this icon to reach the menu If the icon is missing use your browser to find and load default htm in the docs folder found in the Dynamic C installation folder The latest versions of all documents are always available for free unregistered download from our Web sites as well 1 4 3 2 Printing Electronic Manuals We recognize that many users prefer printed manuals for some uses Users can easily print all or parts of those manuals provided in electronic form The following guidelines may be helpful e Print from the Adobe PDF versions of the files not the HTML versions e Print only the sections you will need to refer to more than once Print manuals overnight when appropriate to keep from tying up shared resources dur ing the work day e If your printer supports duplex printing print pages double sided to save paper and increase convenience f you do not have a suitable printer or do not want to print the manual yourself most retail copy shops e g Kinkos AlphaGraphics CopyMax will print the manual from the PDF file and bind it for a reasonable charge about what we would have to charge for a printed and bound manual 4 RabbitCore
51. t control switch CSRAM ICS1 RESET_OUT RESET_OUT Figure C 5 Chip Select Control Switch In a powered up condition the CS control switch must allow the processor s chip select signal CS1 to control the SRAM s CS signal CSRAM So with power applied CSRAM must be the same signal as CS1 and with power removed CSRAM must be held high but only needs to be as high as the battery voltage Q3 and Q4 are MOSFET transistors with opposing polarity They are both turned on when power is applied to the circuit They allow the CS signal to pass from the processor to the SRAM so that the processor can peri odically access the SRAM When power is removed from the circuit the transistors will turn off and isolate CSRAM from the processor The isolated CSRAM line has a 100 KQ pullup resistor to VRAM R28 This pullup resistor keeps CSRAM at the VRAM voltage level which under no power condition is the backup battery s regulated voltage at a little more than 2 V Transistors Q3 and Q4 are of opposite polarity so that a rail to rail voltages can be passed When the CS1 voltage is low Q3 will conduct When the CS1 voltage is high Q4 will conduct It takes time for the transistors to turn on creating a propagation delay This delay is typically very small about 10 ns to 15 ns User s Manual 45 46 RabbitCore RCM2300 APPENDIX D PROGRAMMING CABLE Appendix D provides additional
52. tion signifies that the slave is requesting attention from the master PCO PC2 and PC6 are also output only pins alter natively they can serve as the serial data outputs for Serial Ports D C and A The STATUS pin goes low by default after the first op code fetch of an instruction cycle The STATUS pin may be programmed as a separate output by changing the Rabbit 2000 s Global Output Control Register 2 1 3 Memory I O Interface Four of the Rabbit 2000 address lines A0 A3 and all the data lines DO D7 are avail able I O write LOWR and I 0 read IORD are also available for interfacing to external devices 2 1 4 Other Inputs and Outputs As shown in Table 1 pins PAO PA7 can be used to allow the Rabbit 2000 to be a slave to another processor The slave port also uses PB2 PB5 PB7 and PE7 PEO PEI PEA and PES can be used for up to two external interrupts PBO can be used to access the clock on Serial Port B of the Rabbit microprocessor PD4 can be programmed to be a serial output for Serial Port B PD5 can be used as a serial input by Serial Port B User s Manual 9 2 2 Serial Communication The RCM2300 board does not have an RS 232 or an RS 485 transceiver directly on the board However an RS 232 or RS 485 interface may be incorporated on the board the RCM2300 is mounted on For example the Prototyping Board supports a standard RS 232 transceiver chip 2 2 1 Serial Ports There are four serial ports designat
53. tructions for use provided in the labeling and user s manual can be reasonably expected to result in significant injury No complex software or hardware system is perfect Bugs are always present in a system of any size In order to prevent danger to life or property it is the responsibility of the system designer to incorporate redundant protective mechanisms appropriate to the risk involved All Z World products are 100 percent functionally tested Additional testing may include visual quality con trol inspections or mechanical defects analyzer inspections Specifications are based on characterization of tested sample units rather than testing over temperature and voltage of each unit Z World products may qualify components to operate within a range of parameters that is different from the manufacturer s recom mended range This strategy is believed to be more economical and effective Additional testing or burn in of an individual unit is available by special arrangement User s Manual 57 58 RabbitCore RCM2300 INDEX A E programming cable 47 DIAG connector 48 additional information EMI pinout n 48 Getting Started manual 3 spectrum spreader feature 12 PROG connector 16 online documentation 3 exclusion zone 23 programming port 10 reference information 3 external interrupts
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