LPC2103 USB QuickStart Board User`s Guide
Contents
1. 2 4 Mechanical Dimensions Figure 4 below contains a drawing of the board that includes mechanical measures As seen the board is 26 x 77 mm large Both the USB and DSUB connector are a bit outside of the PCB The board interface connectors are placed in two 22 pin rows along the board edges They are 800 mil 0 80 inch 20 32 mm apart and can be viewed as a DIL 44 package However observe that a standard DIL 44 package has the rows 600 mil 0 6 inch apart and not 800 mil 0 80 inch 20 32 D like the LPC2103 USB QuickStart Board has TE 7mm RESET NS Sag as Luan C 2685 a L L1 Cl O O L1 VODA VSSA Li E a a LJ i HESH out in oor oct TI mm ck a m L a F 3 a a a wt E o Oo oO o T TE BE Ge 8Z ZZ FZ GZ k EZ ZZ T Be BL 8T ZT STONE r EMBEDDED ARTISTS a maa E CD tt dard about 12 mm FO9D UE mm 800 a 26 mm Figure 4 LPC2103 USB QuickStart Board Mechanical Dimensions Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide 2 5 Design Flaws There is a minor design flaw when connecting the USB interface to UART 0 on the LPC2103 All boards with this problem are shipped with a special jumper that cross the two signals as needed See pictures below for details zm 13 a IXD o 2 PQO TXD 1 O TAD 9 J 49 3 Q 22. LPC2103 USB QuickStart Board User s Guide Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Get Up and Running Quickly and Start Developing on Day 7 3 EL EA2 USG 0602 v1 0 Rev B LPC2103 USB QuickStart Board User s Guide Embedded Artists AB Friisgatan 33 SE 214 21 Malm Sweden info EmbeddedArtists com http www EmbeddedArtists com Copyright 2005 2006 Embedded Artists AB All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Embedded Artists AB Disclaimer Embedded Artists AB makes no representation or warranties with respect to the contents hereof and specifically disclaim any implied warranties or merchantability or fitness for any particular purpose Information in this publication is subject to change without notice and does not represent a commitment on the part of Embedded Artists AB Feedback We appreciate any feedback you may have for improvements on this document Please send your comments to support EmbeddedArtists com Trademarks InfraBed and ESIC are trademarks of Embedded Artists AB All other brand and product names mentioned herein are trademarks services marks registered tradema
3. CD ROM In addition the following 1s needed in order to start developing applications with the LPC2103 USB QuickStart Board e A DC power supply 5 10 volt capable of providing at least 150 mA more if external circuits need power from the 3 3 volt supply The LPC2 03 USB QuickStart Board does not contain reverse polarity protection Consult the schematic and the LD1117 datasheet for details about the voltage regulator Note that the board can be powered from the USB interface In this case no external power supply is needed e A serial extension cable DB9 male to DB9 female DB9M DMOF for connecting the LPC2103 USB QuickStart Board to a PC e A USB cable of type B to A both male connectors for connecting the LPC2103 USB QuickStart Board to a PC e Anoptional Prototype QuickStart Board to quickly get up and running with the hardware See Embedded Artists homepage for more information about the Prototype QuickStart Board e Anoptional JTAG interface for program development debugging 1 2 Features Embedded Artists LPC2103 USB QuickStart Board lets you get up and running quickly with Philips ARM7TDMI LPC2103 microcontroller The small form factor board offers many unique features that ease your development e Philips ARM7TDMI LPC2103 microcontroller with 32 KByte program Flash and 8 KByte SRAM e 14 745600 MHz crystal for maximum execution speed and standard serial bit rates Phase locked loop PLL multiplies frequ
4. NEL o o O inni MILL m eene xo E NEN eq ame ome oe E Se E oe I D U bw 3 i T D LIBORVE LLY IDE i x o v T za Tt HEEE Bru eet LLYR Od a T CUUD Q 3 e J T i m DADE Life VL Od r im AST AE SS 639g ages Oe T v JE a ae rurwasei ed mA C S Q ITUR a TEE cee d 2 L 2 a L LIMNILH LOL Dd xh ua Dg uw s wI 1 Q a SS LIV SOE Od m rem ievansidirnd E O OI 9 T lt A ee i ade TA Soe Ce Be T x Ra O TIT ee ruwwoxweos Hes b di c a a ez a Bo De Ta 8 L3 i em PA en O i Ta 7 T3 wos I i dp ti hn i xX S co 198 lar y are DAPIT O 9 x Tir i i ieni ame d q N 2 angad arwa eo O prc in DEROEUHSCH IN co A 5 77 J N 2 9 amp N o oa LPC2103 USB QuickStart Board Schematic Figure 1 Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide The core part of the design is the Philips LPC2103 microcontroller It s an ARM7TDMI S CPU core with a lot of different peripheral units and on chip memory 32 kByte FLASH and 8 kByte SRAM There is no external memory bus interface The microcontroller crystal frequency is 14 7456 MHz This frequency has been selected in order to easily generate standard serial communication bit rates The maximum clock frequency of the processor is 70 MHz and the on chip PLL can be used to multiply the crystal frequency with four 4 x 14 7456 MHz 58 9
5. Sheet http www semiconductors philips com acrobat erratasheets 2 103 pdf 4 Silabs CP2102 Datasheet http www silabs com public documents tpub doc dsheet Microcontrollers Interface en cp2102 pdf 5 ARM7TDMI Technical Reference Manual Document identity DDI0029G http www arm com pdfs DDI0029G_7TDMI R3 trm pdf 6 ARM Architecture Reference Manual Document identity DDIO100E Book Second Edition edited by David Seal Addison Wesley ISBN 0 201 73719 1 Also available in PDF form on the ARM Technical Publications CD 7 ARM System Developer s Guide Designing and Optimizing System Software by A N Sloss D Symes C Wright Elsevier ISBN 1 55860 874 5 8 Embedded System Design on a Shoestring by Lewin Edwards Newnes ISBN 0750676094 9 GNU Manuals http www gnu org manual 10 GNU ARM tool chain for Cygwin http www gnuarm com 11 An Introduction to the GNU Compiler and Linker by Bill Gatliff http www billgatliff com 12 LPC2000 Yahoo Group A discussion forum dedicated entirely to the Philips LPC2xxx series of microcontrollers http groups yahoo com group 1pc2000 13 The Insider s Guide to the Philips ARM7 Based Microcontrollers by Trevor Martin http www hitex co uk arm Ipc2000book index html Especially note document 3 There exist a number of bugs in the processor that 1s important to be aware of Note that there can be newer versions of the documents than the ones linked to here Alway
6. e 1 O J10 o 9 Signals on J9 P0 0 TxD O and J10 P0 1 RxD must Bi be crossed O00 gt ouo 0007 TE Figure 5 LPC2103 USB QuickStart Board Jumper Correction Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Page 12 3 Getting Started 3 1 Test program The LPC2103 USB QuickStart Board comes preloaded with a test program This program can be used to verify that the board operates correctly Test result messages are sent to UART 0 Both UART 0 and 1 implements a simple echo application 1 e received characters are echoed back The real time clock peripheral is tested The on board EEPROM is also tested A running zero pattern is output to the port pins By connecting LEDs to all pins cathode to pin and a current limiting resistor of about 500 ohm Y one LED at a time will light in a running one pattern See picture to the right Active low Connect the USB interface to UART 1 and the RS232 interface to UARTZO by inserting the correct jumpers see Figure 2 above Connect also a USB cable between the LPC2103 USB QuickStart Board and a PC The PC will react to the connection and signal that it has found new hardware a USB serial port Connect a serial cable between the LPC2103 USB QuickStart Board and a PC Start a terminal program with settings 115 2 kbps 8 data bits no parity bits and one stop bit 1 e 8N1 The same setting shall be used fo
7. 824 MHz If higher execution speed is needed another crystal frequency must be selected in order to obtain the maximum 70 MHz There is also a 32 768 kHz crystal clock for the on chip real time clock peripheral unit or RTC for short The microcontroller can be placed in a very low power mode while the RTC operates and keeps track of time Power for the RTC during these low power modes comes from the VBAT input pin Power is sourced either form the 3 3V power supply or the external VBAT IN signal available on the expansion connector depending on which one have highest voltage The LPC2103 also contains an Analog to Digital Converter or ADC for short as well as a Digital to Analog Converter DAC These two peripheral units need a reference voltage which is supplied form the VDDA VSSA power pin The VDDA VSSA power signals are filtered versions of VCC 3 3V GND The power supply is based on dual voltage low dropout voltage regulator the Texas Instruments TPS70251 producing 3 3V and 1 8V For a full specification of the TPS70251 voltage regulator see the datasheet from Texas Instruments also included on the CD ROM The chip also includes a reset generator and a LED is connected to the reset output Power can come from either an external power adapter via the expansion connectors or from the USB connector A blocking diode keeps the USB interface from being reverse fed Note that a USB interface cannot feed more than 500mA maximum Some
8. ency with four about 60 MHz e 32 768kHz RTC crystal e CP2102 USB to UART bridge from Silabs Connected to either UARTZO or UART 1 Can download program code ISP via USB e ESD EMI protected RS232 channel with DSUB 9 connector Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide UART 0 connected with Rx Tx RTS CTS e 64 Kbit CC E PROM for storing non volatile parameters e Onboard low dropout voltage and reset generation Generates 3 3V from a single 5V supply or from USB power 3 3V available for external circuits up to 300 mA Power supply 5 10 VDC at least 150 mA or via USB connector e Simple and automatic program download ISP via RS232 channel Circuit that automatically controls the bootloader from RS232 channel e Dimensions 26 x 77 mm Small form factor for easy integration Dual 22 pins I O connectors e Four layer PCB FR 4 material for best noise immunity 1 3 Low Cost The LPC2103 USB QuickStart Board 1s very low cost and can be used for prototyping development as well as for OEM applications Modifications for OEM applications can be done easily even for modest production volumes Contact Embedded Artists for further information about design and production services 1 3 1 Design and Production Services Embedded Artists provide design services for custom designs either completely new or modification to existing boards Specific periph
9. erals and I O can be added easily to different designs for example communication interfaces specific analog or digital I O and power supplies Embedded Artists has a broad and long experience in designing industrial electronics in general and with Philips LPC2xxx microcontroller family in specific Our competence also includes wireless and wired communication for embedded systems For example IEEE802 11b g WLAN Bluetooth ZigBee ISM RF Ethernet CAN RS485 and Fieldbuses 1 4 Other QuickStart Education Boards Visit Embedded Artists home page www EmbeddedArtists com for information about other QuickStart and Education boards or contact your local distributor Copyright 2006 Embedded Artists AB T T neeug 9ZIZWIB 2 2e 9002 PO taaqunw yuaunaag OTA pJeog i481542T D 8S BT Jd FILL m NI S Ln g OL a mz 3 Siziavizma H a A 1 IL tke 2d 4 A HO OnpOfDU CNUN curan ne a T E ADU Jn pios eg il L a d ONS sd N OnE ONS a ZIMA i BISENI 0 m One T T T 7 s FEMA BaT 7 TERT TS quss aui suo My jnzz E Ole ty i de So fri ELJ i E vu DE FOEDHBEINJN Ora oD This chapter contains detailed information about the electrical and mechanical design of the J tavira ETE ELM teau Oe 85A ee EET os Se METTE V Se Ped on NIH LDOIH c Nw T E E NF Dd amp NIL ino go HVE e E 3S H S mene co _ ae inon o
10. interfaces even have a lower current limit than this The CAT24WC64 chip is a 64kbit E PROM accessible via the IC interface The LPC2103 microcontroller has two on chip C communication channels Channel 0 is used for communicating with the E PROM The other channel can optionally be used on an expansion board More peripheral units are easily connected to the two wire IC bus just as long as the addresses do not collide The address of the 64kbit E PROM is 0xAO Note that the pull up resistors which are always needed on I C busses are included on the board These pull up resistors are 3000 ohm each If using the second I C channel do not forget to connect pull up resistors to these signals also Note that this must be done even if the C functionality is not used enabled Pins P0 17 and P0 18 are open drain I Os and must have pull up resistors when configured as outputs This 1s unfortunately easy to forget UART O0 on the LPC2103 is connected to a RS232 interface via a Sipex SP3232E standard RS232 interface chip It s a 3 3V powered chip with integrated ESD protection in order to minimize the risk of damaging the interface The RS232 interface is not a full modem interface only the receive and transmit signals are connected to UARTZO There are two UART channels on the LPC2103 and only channel 1 has all control signals needed for a full modem implementation Channel 0 only has receive and transmit signals The RTS and CTS control signals are co
11. nnected to pin P0 22 and P0 23 if needed but control must be implemented in software The USB interface is built around the CP2102 from Silabs It implements a USB2 0 USB to UART bridge A LED signals when the USB interface is suspended The UART interface from the USB channel can be connected to either UART 0 or 1 on the LPC2103 If connected to UART 0 program code can be downloaded via the ISP functionality Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide There is a special circuit to automate the ISP feature In System Programming With the help of two control signals RTS and DTR the processor can be placed in the bootloader mode The bootloader uses UART 0 for downloading new program images into the processor either into FLASH or into RAM DTR controls the processor reset and RTS can pull signal P0 14 low If the processor samples P0 14 low after reset the bootloader is entered else the application code is executed The automatic ISP functionality can be disabled by removing jumpers see picture below Note that some terminal programs notably Windows Hyperterminal control the RTS DTR signals in an unfavorable way so that the board always enters bootloader mode or is always in reset more In these cases the jumpers must be removed or a serial cable with only receive and transmit signals must be used 2 2 Jumpers The LPC2103 USB QuickStart Board has a number of jumpers to control
12. r the USB channel 3 2 Program Development Consult the QuickStart Program Development User s Manual for more information about the QuickStart Build Environment from Embedded Artists and program development for the ARM7 in general Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Page 13 4 CD ROM and Product Registration The accompanying CD ROM contains a lot of information and programs that will easy your program development Note that there may be newer versions of different documents and programs available than the ones on the CD ROM See Section 4 2 for information about the product registration process which allows you to always have access to the latest versions 4 1 CD ROM The following is included on the CD ROM e The preloaded test program as a HEX file e The two different ISP download programs e Datasheets of all circuits on the LPC2103 USB QuickStart Board e QuickStart Build Environment from Embedded Artists which contains a complete setup of a build environment for GCC e A complete development environment Rowley Associates CrossWorks for ARM 30 day evaluation version e A complete development environment IAR Embedded Workbench for ARM Kickstart Edition with 32 Kbyte program size limit e Another complete development environment GCC GNUARM distribution including compiler linker make and debugger e The program Programmers Notepad which is a very good program de
13. rks or registered service marks of their respective owners and should be treated as such Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Table of Contents 1 Introduction 4 1 1 Contents 4 1 2 Features 4 1 3 Low Cost 5 1 3 1 Design and Production Services 5 1 4 Other QuickStart Education Boards 5 2 Board Design 6 2 1 Board Schematics 6 2 2 Jumpers 8 2 2 1 Illegal Jumper Combinations 8 2 3 Important Components 9 2 4 Mechanical Dimensions 10 2 5 Design Flaws 11 3 Getting Started 12 3 1 Test program 12 3 2 Program Development 12 4 CD ROM and Product Registration 13 4 1 CD ROM 13 4 2 Product Registration 13 5 Further Information 14 Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide 1 Introduction Thank you for buying Embedded Artists LPC2103 USB QuickStart Board based on Philips ARM7TDMI LPC2103 microcontroller and Silabs CP2102 USB to UART bridge This document is a User s Guide that describes the LPC2103 USB QuickStart Board hardware design There is a separate document describing program development 1 1 Contents The box received when ordering the LPC2103 USB QuickStart Board contains the following e The LPC2103 USB QuickStart Board e CD ROM which includes additional material and programs including complete and evaluation versions of different development environments Observe that bulk orders 10 or 100 boards only include one
14. s check for the latest information version Datasheets for all circuits on the LPC2 03 USB QuickStart Board are included on the accompanying CD ROM Copyright 2006 Embedded Artists AB
15. the UART connections See figure below for a description USB B E J6 in order from left to right USB CTS USB RTS USB RXD USB TXD Jumpers inserted connect USB to UART 1 on LPC2103 In order from left to right J12 RES IN J11 P0 14 J9 P0 0 TxD J10 P0 1 RxD Jumpers in upper position connect USB to UARTZO on LPC2103 In order from left to right J5 RS232 CTS JA RS232 RTS Jumpers in lower position connect RS232 to UART O on LPC2103 TE BER EMBEDDED ARTISTS Figure 2 LPC2103 USB QuickStart Board Jumpers 2 2 1 Illegal Jumper Combinations Note that it is possible to connect both the RS232 interface and the USB interface to UART 0 on the LPC2103 This is of course illegal and can result in board damages So jumpers in J6 must not be inserted at the same time as jumpers in J9 J12 are in upper positions Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide 2 3 Important Components Figure 3 below illustrates the position on the board for some important components in the design USB suspend USB type B connector Reset LED ye os 0 30 J7 JS E E ZA nimium WO ini iii insat connector FO9D Figure 3 LPC2103 USB QuickStart Board Important Components Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Page 10
16. velopment editor and project manager e The Eclipse development environment including the CDT C C Development Tools project 4 2 Product Registration By registering as a customer of Embedded Artists you will get access to more valuable material that will get you up and running instantly e Access to a Real Time Operating System RTOS in the form of a library that can be used for non commercial applications e Access to a number of sample applications that demonstrated different peripheral functions in the LPC2103 processor e Access to the latest versions of all information and programs on the CD ROM Registering is easy and done quickly 1 Go to http www EmbeddedArtists com select Support and then Register 2 Type in the products serial number can be found on the LPC2103 USB QuickStart Board or on the package carrying the board along with your personal information Copyright 2006 Embedded Artists AB LPC2103 USB QuickStart Board User s Guide Page 14 5 Further Information The LPC2103 microcontroller is a complex circuit and there exist a number of other documents with a lot more information The following documents are recommended as a complement to this document 1 Philips LPC2103 Datasheet http www semiconductors philips com acrobat datasheets LPC2101 02 03 1 pdf 2 Philips LPC2103 User s Manual http www semiconductors philips com acrobat usermanuals UM10161 1 pdf 3 Philips LPC2103 Errata
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