Philips PTN3501 User's Manual
Contents
1. _ amo gt E AS A4 A3 A2 A AO ofa Ps i A5 A4 A3 A2 AI m oja a VO EXPANDER b b MEMORY Figure 8 PTN3501 slave addresses Asynchronous Start Following any Start condition on the bus a minimum of 9 SCL clock cycles must be completed before a Stop condition can be issued The device does not support a Stop or a repeated Start condition during this time period I O OPERATIONS see also Figure 7 Each of the PTN3501 s eight I Os can be independently used as an input or output Input I O data is transferred from the port to the microcontroller by the READ mode See Figure 10 Output data is transmitted to the port by the I O WRITE mode see Figure 9 l l SLAVE ADDRESS I O EXPANDER ind l ea SDA 0 AS A4 A3 A2 A1 A0 0 DATA 1 DATA 2 W START CONDITION R ACKNOWLEDGE ACKNOWLEDGE ACKNOWLEDGE FROM SLAVE FROM SLAVE FROM SLAVE DATA TO PORT DATA TO PORT l l l l l l WRITE TO l PORT P Ll L l l l 1 DATA OUT FROM PORT i DATA 1 VALID l DATA 2 VALID 1 SW00649 Figure 9 I O WRITE mode output SLAVE ADDRESS I O EXPANDER DATA FROM PORT DATA FROM PORT DIODE al a 1 A T TT f T START CONDITION R W ACKNOWLEDGE ACKNOWLEDGE STOP FROM SLAVE FROM MASTER CONDITION READ FROM PORT PORT DATA 1 DATA 2 DATA3 tph gt tps L N P tir SW00650 Figure 10 I O READ mode input 2001 Jan 17 5 Philips Semiconductors Maintenance and control device I2. MEMORY OPERATIONS Write operations Write operations require an additional address field to indicate the memory address location to be written The address field is eight bits long providing access to any one of the 256 words of memory There are two types of write operations byte write and page write Byte Write see Figure 14 To perform a byte write the start condition is followed by the memory slave address and the R W bit set to 0 The PTN3501 will respond with an acknowledge and then consider the next eight bits sent as the word address and the eight bits after the word address as the data The PTN3501 will issue an acknowledge after the receipt of both the word address and the data To terminate the data transfer Product specification PTN3501 the master issues the stop condition initiating the internal write cycle to the non volatile memory Only write and read operations to the quasi bidirectional I Os are allowed during the internal write cycle Page Write see Figure 15 A page write is initiated in the same way as the byte write if after sending the first word of data the stop condition is not received the PTN3501 considers subsequent words as data After each data word the PTN3501 responds with an acknowledge and the four least significant bits of the memory address field are incremented Should the master not send a stop condition after 16 data words the address counter will return to its initial value and overwrite th
3. See Figure 3 DATA LINE STABLE DATA VALID Product specification PTN3501 Start and stop conditions Both data and clock lines remain HIGH when the bus is not busy A HIGH to LOW transition of the data line while the clock is HIGH is defined as the start condition S A LOW to HIGH transition of the data line while the clock is HIGH is defined as the stop condition P see Figure 4 System configuration A device generating a message is a transmitter a device receiving is the receiver The device that controls the message is the master and the devices which are controlled by the master are the slaves see Figure 5 CHANGE OF DATA ALLOWED SW00542 Figure 3 Bit transfer START CONDITION t d STOP CONDITION SW00543 Figure 4 Definition of start and stop conditions MASTER TRANSMITTER RECEIVER SLAVE RECEIVER SLAVE TRANSMITTER RECEIVER MASTER TRANSMITTER RECEIVER MASTER TRANSMITTER SW00544 Figure 5 System configuration 2001 Jan 17 Philips Semiconductors Maintenance and control device Acknowledge see Figure 6 The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not limited Each byte of eight bits is followed by one acknowledge bit The acknowledge bit is a HIGH level put on the bus by the transmitter whereas the master generates an extra acknowledge related clock
4. Jan 17 12 Philips Semiconductors Maintenance and control device SOLDERING Introduction There is no soldering method that is ideal for all IC packages Wave soldering is often preferred when through hole and surface mounted components are mixed on one printed circuit board However wave soldering is not always suitable for surface mounted ICs or for printed circuits with high population densities In these situations reflow soldering is often used This text gives a very brief insight to a complex technology A more in depth account of soldering ICs can be found in our IC Package Databook order code 9398 652 90011 DIP Soldering by dipping or by wave The maximum permissible temperature of the solder is 260 C solder at this temperature must not be in contact with the joint for more than 5 seconds The total contact time of successive solder waves must not exceed 5 seconds The device may be mounted up to the seating plane but the temperature of the plastic body must not exceed the specified maximum storage temperature Tstg max If the printed circuit board has been pre heated forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit Repairing soldered joints Apply a low voltage soldering iron less than 24 V to the lead s of the package below the seating plane or not more than 2 mm above it If the temperature of the soldering iron bit is less than 300 C it
5. pulse A slave receiver which is addressed must generate an acknowledge after the reception of each byte Also a master must generate an acknowledge after the reception of each byte that has been clocked DATA OUTPUT BY TRANSMITTER DATA OUTPUT BY RECEIVER SCL FROM MASTER LS START CONDITION Product specification PTN3501 out of the slave transmitter The device that acknowledges has to pull down the SDA line during the acknowledge clock pulse so that the SDA line is stable LOW during the HIGH period of the acknowledge related clock pulse set up and hold times must be taken into account A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last byte that has been clocked out of the slave In this event the transmitter must leave the data line HIGH to enable the master to generate a stop condition NOT ACKNOWLEDGE ACKNOWLEDGE CLOCK PULSE FOR ACKNOWLEDGEMENT CENO G SW00545 Figure 6 Acknowledgment on the I C bus FUNCTIONAL DESCRIPTION WRITE PULSE DATA FROM SHIFT REGISTER POWER ON RESET READ PULSE DATA TO SHIFT REGISTER PO TO P7 gt gt TO INTERRUPT LOGIC SW00788 Figure 7 Simplified schematic diagram of each I O 2001 Jan 17 Philips Semiconductors Product specification Maintenance and control device PTN3501 Addressing For addressing see Figure 8 SLAVE ADDRESS SLAVE ADDRESS _Ja gt gt
6. six address pins allowing up to 64 devices to 8 Interrupt Pin Z share the common two wire I C software protocol serial data bus 18 2C Serial Clock The PTN3501 supports live insertion to facilitate usage in removable 19 12C Serial Data cards on backplane systems 20 Vpp Supply Voltage The PTN3501 is an alternative to the functionally similar PTN3500 for systems where a high number of devices are required to share the same C bus without need for an additional I2C bus I O expander ORDERING INFORMATION Package Type number Name Description Version PTN3501DH_ TSSOP20 Plastic thin shrink small outline package 20 leads body width 4 4 mm SOT360 1 12C 8 BIT CONTROL UO PORT FUNCTIONAL DIAGRAM E2PROM 256 x 8 SW00647 Figure 2 2001 Jan 17 2 853 2227 25436 Philips Semiconductors Maintenance and control device CHARACTERISTICS OF THE I2C BUS The 2C bus is for 2 way 2 line communication between different ICs or modules The two lines are a serial data line SDA and a serial clock line SCL Both lines must be connected to a positive supply via a pull up resistor when connected to the output stages of a device Data transfer may be initiated only when the bus is not busy Bit transfer One data bit is transferred during each clock phase The data on the SDA line must remain stable during the HIGH period of the clock pulse as changes in the data line at this time will be interpreted as control signals
7. 0 plastic thin shrink small outline package 20 leads body width 4 4 mm DIMENSIONS mm are the original dimensions war ZT a Ta om o omfee s fue tule y 2 e max 0 15 0 95 0 30 0 2 6 6 4 5 6 6 0 75 0 4 0 5 8 mm 30 oa dee oz oss a2 oa 45 foe 88 1o ag as oz foe or as e Notes 1 Plastic or metal protrusions of 0 15 mm maximum per side are not included 2 Plastic interlead protrusions of 0 25 mm maximum per side are not included Loe a Product specification PTN3501 SOT360 1 OUTLINE REFERENCES EUROPEAN VERSION IEC JEDEC EIAJ PROJECTION ISSUE DATE SOT360 1 MO 153 e060 95 02 04 99 12 27 2001 Jan 17 14 Philips Semiconductors Product specification Maintenance and control device PTN3501 Data sheet status Data sheet Product Definition 1 status status Objective Development This data sheet contains the design target or goal specifications for product development specification Specification may change in any manner without notice Preliminary Qualification This data sheet contains preliminary data and supplementary data will be published at a later date specification Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product Product Production This data sheet contains fin
8. 1s with interrupt SLAVE ADDRESS I O EXPANDER A cr SDA 0 A5 A4 A3 A2 Al AO START CONDITION SCL ACKNOWLEDGE P5 STOP CONDITION FROM SLAVE SW00791 Figure 12 Interrupt generated by a change of input to I O P5 2001 Jan 17 Philips Semiconductors Product specification Maintenance and control device PTN3501 Quasi bidirectional I Os see Figure 13 A quasi bidirectional I O can be used as an input or output without the use of a control signal for data direction At power on the I Os are HIGH In this mode only a current source to Vpp is active An additional strong pull up to Vpp allows fast rising edges into heavily loaded outputs These devices turn on when an output is written HIGH and are switched off by the negative edge of SCL The I Os should be HIGH before being used as inputs SLAVE ADDRESS PTN3501 DATA TO PORT DATA TO PORT a A N g A N r A K ORGED D TT tt il Ree f T i T f START CONDITION R W ACKNOWLEDGE P3 ACKNOWLEDGE P3 FROM SLAVE FROM SLAVE P3 OUTPUT VOLTAGE P3 PULL UP OUTPUT CURRENT SW00789 Figure 13 Transient pull up current lour while P3 changes from LOW to HIGH and back to LOW SYMBOL PARAMETER Output data valid C lt 100 pF Input data setup time CL lt 100 pF UNIT t t t t Interrupt input data valid time C lt 100 pF Om e H 9 RTT S H H TS URT O H O H 2001 Jan 17 7 Philips Semiconductors Maintenance and control device
9. INTEGRATED CIRCUITS DATA SAHEET PTN3501 Maintenance and control device Product specification 2001 Jan 17 Supersedes data of 2000 Nov 22 Philips PHILIPS Semiconductors FA l LI PS Philips Semiconductors Product specification TE Maintenance and control device PTN3501 FEATURES PIN CONFIGURATION 2C to parallel port expander PTN3501 swo0657 S Internal 256x8 E2PROM Self timed write cycle 5 ms typ 16 byte page write operation Controlled pull up on address lines Low voltage Vcc range of 2 5 V to 3 6 V 5 V tolerant I Os Low standby current lt 60 HA Power on Reset Supports Live Insertion Compatible with SMBus specification version 1 1 High E2PROM endurance and data retention Available in TSSOP20 package Figure 1 PIN DESCRIPTION DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION The PTN3501 is a general purpose maintenance and control device 123 91112 Address Lines It features an on board E2PROM that can be used to store error ___ codes or board manufacturing data for read back by application 4 5 6 7 Quasi bidirectional I O pins software for diagnostic purposes 10 Ground The eight quasi bidirectional data pins can be independently 13 14 15 16 Quasi bidirectional I O pins assigned as inputs or outputs to monitor board level status or 17 Write Control Pin Should be activate indicator devices such as LEDs tied LOW The PTN3501 has
10. UN 12C bus timing see Figure 19 Note 1 sa E H HH HH iC LTH H HH H o C 1 TH HH H HT D G TH H o HH o o ups START condition hoidtime Ts fi SCLandsDArisetime o o d o f os t SCLandspAtaitime Es sumar datasetupime Ps tomar datahodtime ts vomar SCLLOWtodataoutvaid o o o e f os susto STOP condition setupime _ _ J f s NOTE 1 All the timing values are valid within the operating supply voltage and ambient temperature range and refer to Vi and V p with an input voltage swing of Vss to Vpp START ACKNOWLEDGE STOP PROTOCOL CONDITION A CONDITION S P lag toy MBD820 SU STO Swo0561 Figure 19 2001 Jan 17 11 Philips Semiconductors Product specification Maintenance and control device PTN3501 POWER UP TIMING SYMBOL PARAMETER MAX UNIT teun Power up to Read Operation 1 tpuw Power up to Write Operation 5 NOTE 1 tpur and tpyw are the delays required from the time Vcc is stable until the specified operation can be initiated These parameters are guaranteed by design WRITE CYCLE LIMITS SYMBOL PARAMETER MIN TYP 5 MAX UNIT twr Write Cycle Time 5 10 ms NOTE 1 twp is the maximum time that the device requires to perform the internal write operation Write Cycle Timing SCL SDA 8th Bit Word n MEMORY ADDRESS twR Stop Start Condition Condition SW00560 Figure 20 2001
11. al specifications Philips Semiconductors reserves the right to make specification changes at any time without notice in order to improve design and supply the best possible product 1 Please consult the most recently issued datasheet before initiating or completing a design Definitions Short form specification The data in a short form specification is extracted from a full data sheet with the same type number and title For detailed information see the relevant data sheet or data handbook Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System IEC 134 Stress above one or more of the limiting values may cause permanent damage to the device These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied Exposure to limiting values for extended periods may affect device reliability Application information Applications that are described herein for any of these products are for illustrative purposes only Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification Disclaimers Life support These products are not designed for use in life support appliances devices or systems where malfunction of these products can reasonably be expected to result in pers
12. e data previously written After the receipt of the stop condition the inputs will behave as with the byte write during the internal write cycle SLAVE ADDRESS MEMORY WORD ADDRESS DATA SDA A A A r N 2 St N Slade OE re CL START CONDITION R W ACKNOWLEDGE FROM SLAVE ACKNOWLEDGE STOP FROM SLAVE CONDITION ACKNOWLEDGE FROM SLAVE SW00651 Figure 14 Byte write SLAVE ADDRESS MEMORY WORD ADDRESS DATA TO MEMORY DATA TO MEMORY SDA A A AN a R Cc N g A 4 LC START RW STOP CONDITION ACKNOWLEDGE ACKNOWLEDGE ACKNOWLEDGE CONDITION FROM SLAVE FROM SLAVE FROM SLAVE SW00652 A b R DATA 3n A P Figure 15 Page Write 2001 Jan 17 Philips Semiconductors Maintenance and control device Read operations PTN3501 read operations are initiated in an identical manner to write operations with the exception that the memory slave address R W bit is set to a one There are three types of read operations current address random and sequential Current Address Read see Figure 16 The PTN3501 contains an internal address counter that increments after each read or write access as a result if the last word accessed was at address n then the address counter contains the address n 1 When the PTN3501 receives its memory slave address with the R W bit set to one it issues an acknowledge and uses the next eight clocks to transmit the data contained at the address sto
13. ge VI Input Voltage V l DC Input Current lo DC Output Current lnn Supply Current Iss Supply Current Piot Total Power Dissipation Po Total Power Dissipation per Output TsTG Storage Temperature TAMB Operating Temperature Vesp Electrostatic Discharge Human Body Model 1 5 kQ 100 pF Machine Model 0 Q 200 pF Vit Address Inputs Ap thru As WC input Input LOW voltage VIH IL Input HIGH voltage Input leakage current Vi Vpp Input leakage pull up current Vi Vss Interrupt output INT 4 S 0 3 Vpp wo js m E SYMBOL PARAMETER MIN TYP MAX UNIT Supply Vpp Supply Voltage 2 5 3 3 3 6 V Ippa Standby Current Ag thru As WC HIGH 60 uA Ipp2 Supply Current Write 2 mA Input SCL input output SDA Vit Input LOW voltage 0 5 0 3 Vpp V Vin Input HIGH voltage 0 7 Vpp 5 5 V IL Input leakage current VI Vpp or Vss 1 1 uA Ci Input capacitance V Vss 7 pF I O Expander Port Vit Input LOW voltage 0 5 0 3 Vpp V Vin Input HIGH voltage 0 7 Vpp 5 5 V lot Output LOW current VoL 1 V 10 25 mA lout Transient pull up current 2 mA Co Output Capacitance 10 0 5 1 10 E lt lt pel PT l loL li 2001 Jan 17 Low level output current Vo 0 4 V 1 6 T E MeN oner VSS 3 gt i Philips Semiconductors Product specification Maintenance and control device PTN3501 I2C BUS TIMING CHARACTERISTICS amsar T anan m e TR
14. may remain in contact for up to 10 seconds If the bit temperature is between 300 and 400 C contact may be up to 5 seconds SO and SSOP Reflow soldering Reflow soldering techniques are suitable for all SO and SSOP packages Reflow soldering requires solder paste a suspension of fine solder particles flux and binding agent to be applied to the printed circuit board by screen printing stencilling or pressure syringe dispensing before package placement Several techniques exist for reflowing for example thermal conduction by heated belt Dwell times vary between 50 and 300 PURCHASE OF PHILIPS 12C COMPONENTS 2001 Jan 17 Product specification PTN3501 seconds depending on heating method Typical reflow temperatures range from 215 to 250 C Preheating is necessary to dry the paste and evaporate the binding agent Preheating duration 45 minutes at 45 C Wave soldering Wave soldering is not recommended for SSOP packages This is because of the likelihood of solder bridging due to closely spaced leads and the possibility of incomplete solder penetration in multi lead devices If wave soldering cannot be avoided the following conditions must be observed A double wave a turbulent wave with high upward pressure followed by a smooth laminar wave soldering technique should be used The longitudinal axis of the package footprint must be parallel to the solder flow and must inc
15. nterrupt See Figs 11 and 12 The PTN3501 provides an open drain output INT which can be fed to a corresponding input of the microcontroller This gives these chips a type of master function which can initiate an action elsewhere in the system An interrupt is generated by any rising or falling edge of the port inputs in the input mode After time tiy the signal INT is valid Resetting and reactivating the interrupt circuit is achieved when data on the port is changed to the original setting or data is read from or written to the port which has generated the interrupt Resetting occurs as follows ln the READ mode at the acknowledge bit after the rising edge of the SCL signal PTN3501 1 1 MICROCONTROLLER INT Product specification PTN3501 ln the WRITE mode at the acknowledge bit after the HIGH to LOW transition of the SCL signal Returning of the port data to its original setting A second port state change will require an SCL rising clock edge to be captured as an INT event Interrupts which occur during the acknowledge clock pulse may be lost or very short due to the resetting of the interrupt during this pulse Each change of the I Os after resetting will be detected and after the next rising clock edge will be transmitted as INT Reading from or writing to another device does not affect the interrupt circuit PTN3501 PTN3501 2 16 SW00790 Figure 11 Application of multiple PTN350
16. onal injury Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application Right to make changes Philips Semiconductors reserves the right to make changes without notice in the products including circuits standard cells and or software described or contained herein in order to improve design and or performance Philips Semiconductors assumes no responsibility or liability for the use of any of these products conveys no license or title under any patent copyright or mask work right to these products and makes no representations or warranties that these products are free from patent copyright or mask work right infringement unless otherwise specified Philips Semiconductors Copyright Philips Electronics North America Corporation 2001 811 East Arques Avenue All rights reserved Printed in U S A P O Box 3409 Sunnyvale California 94088 3409 Date of release 01 01 Telephone 800 234 7381 Document order number 9397 750 07933 Lett make things beter oe es PHILIPS
17. ontinue transmitting data until a stop condition is received The master ceases the transmission by issuing the stop condition after the eighth bit omitting the ninth clock cycle acknowledge SLAVE ADDRESS MEMORY A DATA FROM MEMORY A E E K MEMORY ADDRESS START R W STOP CONDITION ACKNOWLEDGE CONDITION FROM SLAVE SW00653 Figure 16 Current Address Read SLAVE ADDRESS WORD SLAVE ADDRESS MEMORY DATA FROM MEMORY A BK A whe Cc K C K Ta N g X START R W CONDITION ACKNOWLEDGE FROM SLAVE SDA START R W ACKNOWLEDGE R W STOP CONDITION FROM SLAVE ACKNOWLEDGE CONDITION FROM SLAVE ACKNOWLEDGE START FROM SLAVE CONDITION SW00654 Figure 17 Random Read SLAVE ADDRESS DATA DATA DATA MEMORY FROM MEMORY FROM MEMORY FROM MEMORY SDA mama A A Cc A a e K AS A4 A3 A2 A1 AO 1 DATA n DATA n 1 t C ACKNOWLEDGE FROM MASTER a E N STOP CONDITION ACKNOWLEDGE FROM MASTER SW00655 Figure 18 Sequential Read 2001 Jan 17 Philips Semiconductors Maintenance and control device ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur Functional operation under these conditions is not implied Product specification PTN3501 DC ELECTRICAL CHARACTERISTICS Tamb 40 C to 85 C unless otherwise specified Voc 3 3 V SYMBOL PARAMETER Voc Supply Volta
18. orporate solder thieves at the downstream end Even with these conditions only consider wave soldering SSOP packages that have a body width of 4 4 mm that is SSOP16 SOT369 1 or SSOP20 SOT266 1 During placement and before soldering the package must be fixed with a droplet of adhesive The adhesive can be applied by screen printing pin transfer or syringe dispensing The package can be soldered after the adhesive is cured Maximum permissible solder temperature is 260 C and maximum duration of package immersion in solder is 10 seconds if cooled to less than 150 C within 6 seconds Typical dwell time is 4 seconds at 250 C A mildly activated flux will eliminate the need for removal of corrosive residues in most applications Repairing soldered joints Fix the component by first soldering two diagonally opposite end leads Use only a low voltage soldering iron less than 24 V applied to the flat part of the lead Contact time must be limited to 10 seconds at up to 300 C When using a dedicated tool all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C Purchase of Philips 12C components conveys a license under the Philips 12C patent to use the components in the 12C system provided the system conforms to the 12C specifications defined by Philips This specification can be ordered using the code 9398 393 40011 Philips Semiconductors Maintenance and control device TSSOP2
19. red in the address counter The master ceases the transmission by issuing the stop condition after the eighth bit There is no ninth clock cycle for the acknowledge Random Read see Figure 17 The PTN3501 s random read mode allows the address to be read from to be specified by the master This is done by performing a dummy write to set the address counter to the location to be read Product specification PTN3501 The master must perform a byte write to the address location to be read but instead of transmitting the data after receiving the acknowledge from the PTN3501 the master reissues the start condition and memory slave address with the R W bit set to one The PTN3501 will then transmit an acknowledge and use the next eight clock cycles to transmit the data contained in the addressed location The master ceases the transmission by issuing the stop condition after the eighth bit omitting the ninth clock cycle acknowledge Sequential Read see Figure 18 The PTN3501 sequential read is an extension of either the current address read or random read If the master doesn t issue a stop condition after it has received the eighth data bit but instead issues an acknowledge the PTN3501 will increment the address counter and use the next eight cycles to transmit the data from that location The master can continue this process to read the contents of the entire memory Upon reaching address 255 the counter will return to address 0 and c
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