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AVR1909: Display Xplained Hardware User's
Features
• 240 x 320 (QVGA) graphical TFT display
- With resistive touch
- LED Backlight
- Internal controller
• Simple SPI interface for control
• Digital (PWM) control interface for backlight
• One 40pin, 0.5mm FPC connector
• Display and backlight powered by single 3.3V
1 Introduction
The Display Xplained module gives the possibility to evaluate a 240 x 320 pixel
(QVGA) graphical RGB TFT display with a 4-wire touch interface and LED
backlight. The display is interfaced with a simple SPI interface to send and receive
commands and data. The Xplain kit provides tested low–level drivers and high-
level functions in order to get the developer quickly up to speed with his application
development.
Figure 1-1. Display Xplained evaluation module.
Guide
8-bit
Microcontrollers
Application Note
Rev. 8297A-AVR-04/10
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Summary of Contents for Atmel AVR1909
- Page 1 AVR1909: Display Xplained Hardware User's Guide Features • 240 x 320 (QVGA) graphical TFT display 8-bit - With resistive touch Microcontrollers - LED Backlight - Internal controller • Simple SPI interface for control • Digital (PWM) control interface for backlight Application Note •...
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Page 2: Related Items
Datasheet for the graphical controller (HX8347-A) from Himax can be obtained by contacting EDT. It may also found on the web. Firmware for Xplain kit can be found here: http://www.atmel.com/Xplain Also checkout these application note: • AVR1913: Display Xplained Firmware – Getting Started training •... - Page 3 AVR1909 The Display Xplained module is quite simple. It basically connects the TFT display SPI interface, resistive touch interface, and backlight interface from a 40pin FPC connector to two female pin-headers that fit the Xplain kit. In addition it has a program/debug interface that will connect an external programmer/debugger to the Xplain kit through a male and a female pin-header.
- Page 4 3.4 The SPI interface The Display Xplained module uses a simple SPI interface to communicate with the LCD module. This consist of a Chip-Select (CS) line, a clock line (SCL), and two data lines (SDI/SDO). The SPI is operated in mode 3, i.e. inactive clock is ‘high’, and data is latched on rising clock edge.
- Page 5 J103/J104-9 J103/J104-10 Notes: 1. Standard pin-out for JTAGICE mkII and other Atmel programming tools. 2. Requires adapter or squid cable to connect a JTAGICE mkII (refer to AVR Studio help). 3. It is only required to connect one V3P3/GND pin.
- Page 6 5 Available code examples and drivers A Getting-Started training for the Display Xplained kit can be downloaded from the Atmel web site. The application note is called: AVR1913: Display Xplained Firmware – Getting Started training. Further information and drivers for Display Xplained can be downloaded as application notes, also distributed from Atmel’s web site.
- Page 7 BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein.