3.2 inch QVGA TFT Color LCD User's Guide
Contents
1. 3 2 inch QVGA TFT Color LCD User s Guide Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide Version 1 amp 2 Embedded Artists o Embedded Artists AB C 2006 a uuu a le lele tele amet at ate Give graphics and color to your application Da Embedded Artists EA2 USG 0701 v2 1 Rev A 3 2 inch QVGA TFT Color LCD User s Guide Embedded Artists AB Ole Romers vag 12 SE 223 70 Lund Sweden info EmbeddedArtists com http www EmbeddedArtists com Copyright 2005 2007 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 Embe2. serial 18 bit 18 bit 16 bit 18 bit 18 bit 16 bit 18 bit 16 bit color color color color color color color color depth depth depth depth depth depth depth Configuration pins 16 2 6 6 6 8 8 2 8 8 DTX1 CFG2 DTX2 CFG3 BWSO CFG4 BWS1 CFG5 Does not matter This pin is currently not used Set to L BWS2 CFG6 If the parallel interface is selected there are two different interface types The configuration pin C86 is used to select between the i86 interface and the M68 interface See datasheet for details about timing and how the different control signals are used Low 186 interface RD E signal is Read strobe WR RW signal is Write strobe M68 interface RD E signal is Enable signal WR RW signal is RW signal high read low write If a serial interface is used see the datasheet for details about timing and how the different control signals are used Note that maximum clock frequency is 10 MHz 2 5 Interface pin description The table below describes the 40 pin interface to the OVGA LCD Module A 2x20 pos 100 mil spacing header connector facing down is used See datasheet for details about interface timing Description 1 39 Power supply for QVGA LCD Module Both pins must be connected to the power supply Pin 1 supply the QVGA LCD and pin 39 supply the backlight 2 10 Ground 40 CFGI1 PSX interface configuration pin see description above C86 interface configuration pin see des
3. 8 15 P 17 P8 19 POcen P8 23 P8 25 P6 27 Pi 2 P15 Pi 7 P1 12 P1 18 P1 20 Pi 22 NCIPUR ectives CC 2006 tm wuu E mbeddedArt Figure 5 Wire to p0 16 on OEM Base Board Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide ag 3 Board Mechanical Dimensions Figure 6 below contains a drawing of the board that includes mechanical measures Four 4 3 mm grounded mounting holes are used 2x2 54 mm lt 6 5 mm QUGA 320xRGBx24 gt TFT LCD with integrated controller Part no EA LCD 001 version 2 70 mm 83 mm e w 2 ty oe 0 2 222e2e00q Embedded Artists AB lt C 2006 WWW zEmMbeddedArtists com 6 5 mm 80 0 mm ts _ 93 mm Figure 6 3 2 inch QVGA TFT Color LCD Board Mechanical Dimensions Copyright 2007 Embedded Artists AB 3 2 inch QVGATFTColorLCD User sGuide a ag 4 Product Registration You can download a lot of valuable information and programs that will easy your program development from the support pages See details below about the product registration process which allows you to always have access to the latest versions 4 1 Product Registration By registering as a customer of Embedded Artists you will get access to valuable material and information that will get you up and running instantly e The latest version of the software both as binary image hex file and as source code e Datasheets of LCD controlle
4. 800 style M68 interface RD E signal is Enable signal WR RW signal is RW signal high read low write If a serial interface is used see the datasheet for details about timing and how the different control signals are used Note that maximum clock frequency is 13 MHz 2 3 On board touch screen Controller display version 2 The touch screen controller used 1s TSC2046 from Texas Instruments This chip has a SPI interface and shares the SI SO SCK pins in the main interface connector with the LCD controller Pin 45 must however be low TSC2046 chip CS in order to communicate with the touch screen controller See TSC2046 datasheet for details about the serial interface 2 4 On board LCD Controller display version 1 The display has an embedded controller IS2102B from ISRON This controller chip has 1 3 Mbit embedded display RAM which is enough for storing a complete 320xRGBx240 picture with 18 bit color depth There are a couple of interface alternatives to this controller Either 16 bit or 8 bit parallel interface or a serial interface There are 6 pins that are used to configure the interface The table below lists the different options L is statically tied to low logic level and H 1s statically tied to high logic level Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 16 bit 16 bit 16 bit 8 bit bit 8 bit 9 bit bit parallel parallel parallel parallel parallel parallel serial
5. Visit Embedded Artists home page www EmbeddedArtists com for information about other boards kits or contact your local distributor Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 2 Design Description This chapter describes the hardware design of the QVGA LCD Board 2 1 Backlight Control White LEDs are used as backlight on the display The LED current is set to 15 mA A step up DC DC converted is used to generate a constant LED current The switching frequency is fixed to 1 2 MHz The intensity of the backlight 1 e the white LEDs is varied by varying the LED current There are two ways to very the LED current between 0 15 mA A digital PWM signal is needed with the same logic levels as the power supply typically 3 3V e Modulate the shutdown pin of the DC DC converter signal LED SHDN A low input signal turn off the DC DC converted and a high level activate it A high duty cycle on the PWM signal equals high intensity e Modulate the current set pin of the DC DC converter signal LED PWM A low input signal increase the LED current and a high level reduce it A high duty cycle on the PWM signal equals low intensity The frequency of the modulation PWM signal should ideally be in the 5 10 kHz region 2 2 On board LCD Controller display version 2 The display has an embedded controller SSD1289 from Solomon Systech This controller chip has 1 3 Mbit embedded display RAM which i
6. cription above Not used on version 2 Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 5 eFG2 DTT nies sna ee eo 6 CFCS DTT nies enion i ee eo T TOET ENST iere eonenn pin Ge teer O 5 T BNST nee conero i Ge deron ave Nonato eson gt BSE ine sonst i Ge dessin above Nowa onvoson2 11 12 D17 D16 data inputs if 18 bit color depth is used Not used when 8 or 16 bit parallel interface is used 13 28 D15 D0 databus DO D7 is used for 8 bit parallel interface DO D15 is used when 16 bit parallel interface is used 1 2 RST reset input active low 290 CS Chip Select active low Normally connected to Al if 16 bit parallel interface or AO if 8 bit interface 5 9 30 3 v1 or CFG settings v2 CFG settings v2 RS Register Set input Controls if control registers or display ram is accessed 9 SI Serial Input if the serial interface is used Set low if not used SCL Serial Clock 1f the serial interface is used Set low if not used SO Serial Output if the serial interface is used 37 LED PWM digital PWM signal input 5 10 kHz for controlling the backlight Low duty cycle high intensity Leave open if not used High duty cycle high intensity Leave open if not used LED_SHDN digital PWM signal input 5 10 kHz for controlling the backlight On display version 2 a new extra 1x6 pos 100 mil spacing header connector facing down exists See
7. datasheet for details about interface timing Touch screen controller PENIRQ Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide a ag The picture below illustrates the pin numbering of the QVGA LCD Module QUGA 328xRGBx240 TFT LCD with integrated controller Part no EA LCD 0001 Mounting holes x4 4 3mm diameter Embedded Artists AB C 2006 WWW Embedded rtists com Figure 1 3 2 inch QVGA TFT Color LCD Board Pin Numbering Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 2 6 Optimum Viewing Angle Optimum viewing angles are as illustrated below QUGA 328xRGBx24 TFT LCD O with integrated controller Part no EA LCD 0001 O oooo0o0o000000000000000 P oo0oo0oo00000000000000000pr Embedded Artists AB C 2006 Www EmbeddedArtists com Figure 2 3 2 inch QVGA TFT Color LCD Board Optimum Viewing Angle Copyright 2007 Embedded Artists AB 3 2 inch QVGATFTColorLCD User sGuide a gg 2 7 Connecting version 2 to OEM Base Board lt v1 5 Version 1 5 and above of the OEM Base Board has direct connectors for all 46 positions in the interface connector Version 1 4 and below do not have the 6 extra positions pos 41 46 These have been added for version2 of the display The touch screen controller can still be accessed with just one extra wire from pin 45 on the display module to P0 16 on the OEM Bas
8. dded Artists AB All other brand and product names mentioned herein are trademarks services marks registered trademarks or registered service marks of their respective owners and should be treated as such Copyright 2007 Embedded Artists AB 3 2inchQVGATFTColorLCD User sGuide Table of Contents 1 Introduction 1 1 Features 1 2 Version 1 vs Version 2 1 3 ESD Precaution 1 4 Other Products from Embedded Artists 1 4 1 Design and Production Services 1 4 2 Boards and Kits aaranua A A A 2 Design Description 2 1 Backlight Control 2 2 On board LCD Controller version 2 2 3 On board touch screen Controller version 2 2 4 On board LCD Controller version 1 2 5 Interface pin description OO NNOO Q 2 6 Optimum Viewing Angle 1 2 7 Connecting version 2 to OEM Base Board lt v1 5 12 3 Board Mechanical Dimensions 14 4 Product Registration 15 4 1 Product Registration 15 Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 1 Introduction Thank you for buying Embedded Artists 3 2 inch QVGA TFT Color LCD Board based on a LCD from Truly Sample applications for our NXP LPC2xxx based boards are also provided and can be downloaded from the support page The 3 2 inch QVGA TFT Color LCD Board will be called the QVGA LCD Board for short in the rest of this document 1 1 Features The QVGA LCD Board has the following features e Optional touch screen interface available for versi
9. e Board P0 16 is used for chip select of the touch screen controller Other pins work just as well but P0 16 is used on v1 5 and above of the OEM Base Board QVGA 328xRGBx24 gt TFT LCD O with integrated controller O Part no EA LCD 001 Embedded Artists AB C 2006 WWW EMbeddedArtists com Figure 3 3 2 inch QVGA TFT Color LCD Board Pin 45 Simply connect a wire from pin 45 on the display module to P0 16 on the OEM Base Board Figure 4 and 5 below illustrate the wire connection Also note that the three SPI jumpers must be inserted see Figure 4 for details Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide wiih 6 8P 8 8 2 lt I xrxtrerisP 8 8 xPFxmix lt x TI9 9 9 ee ee a oe 8 8 Vv wv xrry x riec Device Host lt gt TETINE P4 30 usB B Wa A USB B A EN jf m A To E smn i Trea AUGA 320 1 integ a Three SPI jumpers must be inserted since communication with touch screen controller is via SPI Embedde Www Emb 79 y n tel Figure 4 Picture of Wire to Pin 45 on Display Module ad P8 2 PO 4 P 6 P9 8 Po 10 P0 12 P0 14 P0 16 P0 18 P 26 P 22 P 24 P 26 P8 28 Pi 3 P1 6 Pi ii Pi i3 Pi1 i9 61 21 O O O00000 Ko Te Xe Xe eo gt Zeke ze zone none no ee0ocooo0000 g G00000000 PO 1 Pe 3 Pa 5 Pe 7 Pe 9 PO 11 Pe 13 P
10. interface and some Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide extra signals for direct RGB control of display useful when interfacing the LPC2478 MCU from NXP 1 3 ESD Precaution Always take ESD precaution when handling the QVGA LCD Module Components are exposed for direct finger touches and can be damaged unless ESD precaution is taken 1 4 Other Products from Embedded Artists Embedded Artists has a broad range of LPC2xxx based boards that are very low cost and developed 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 4 1 Design and Production Services Embedded Artists provide design services for custom designs either completely new or modification to existing boards Specific peripherals 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 2 Boards and Kits
11. on 2 e 8 bit or 16 bit parallel interface Only occupies 2 addresses 1 e one address pin e or serial 8 bit SPI like interface max 10 MHz clock e Diagonal size 3 2 inch e Display technology TFT e Display mode Transmissive e No of pixels 240xRGBx320 QVGA size e Supply voltage 3 0 3 3V e White LED backlight with PWM control e View area 48 6 x 64 8 mm e Dot size 0 2025 x 0 2025 mm e Operating temperature 20 to 70 degrees Celsius e No of colors 262K if 18 bit mode 65k if 16 bit mode e 2x20 pos connector 100 mil spacing is required to interface the module plus optional 1x6 pos connector e Small form factor 93 x 83 mm 1 2 Version 1 vs Version 2 There exist two versions of the display Version 1 uses a display from one display manufacturer and version 2 uses a display from another manufacturer The similarities between the versions are e Same physical size of display module e Same optical features and capabilities e Same main 2x20 pos interface connector 100 mil spacing The differences are e Different internal display controllers are used The programming interface is not identical but very similar A reference software driver exists that supports both versions simultaneous e Version 2 of the display module has a touch screen option e A 6 pos extra interface connector has been added beside the main 2x20 pos interface connector This extra connector carries signals for touch screen
12. r e Image conversion program for generating bitmaps from pictures Registering 1s easy and done quickly 1 Visit http www EmbeddedArtists com select Support and then Register 2 Type in the products serial number can be found on the ESD bag of the OVGA LCD Board along with your personal information Copyright 2007 Embedded Artists AB
13. s enough for storing a complete 320xRGBx240 picture with 18 bit color depth There are a couple of interface alternatives to this controller Either 18 bit 16 bit 9 bit or 8 bit parallel interface or a serial interface There are 4 pins that are used to configure the interface The table below lists the different options L is statically tied to low logic level and H is statically tied to high logic level 18 bit 16 bit 9 bit 8 bit 18 bit 16 bit 9 bit 8 bit parallel parallel parallel parallel parallel parallel parallel parallel 6800 6800 6800 6800 8080 8080 8080 8080 style if style if style if style if style if style if style if style if Ls Le Le a a a E E Configuration pins o poa Does not matter This pin is currently not used CFG5 Does not matter This pin is currently not used CFG6 Copyright 2007 Embedded Artists AB 3 2 inch QVGA TFT Color LCD User s Guide 6 bit RGB if RGB Configuration pins PSO CFG1 PS1 CFG2 PS2 CFG3 PS4 CFG4 Does not matter This pin is currently not used CFGS5 Does not matter This pin is currently not used CFG6 If the parallel interface is selected there are two different interface types either 6800 or 8080 style See datasheet for details about timing and how the different control signals are used Description 8080 style 186 interface RD E signal is Read strobe WR RW signal is Write strobe 6
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