Data Sheet

a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 44 of 233
7.1.15. Data Transfer Mode
ILI9341 can provide two different kinds of color depth (16-bit/pixel and 18-bit/pixel) display data to the graphic
RAM. The data format is described for each interface. Data can be downloaded to the frame memory by 2
methods.
7.1.16. Data Transfer Method 1
The image data is sent to the frame memory in the successive frame writing, each time the frame memory is
filled by image data, the frame memory pointer is reset to the start point and the next frame is written.
Start Frame
Memory Write
Image Data
Frame 1
Image Data
Frame 2
Image Data
Frame 3
Any Command
Stop
Start
7.1.17. Data Transfer Method 2
Image data is sent and at the end of each frame memory download, a command is sent to stop frame memory
writing. Then start memory write command is sent, and a new frame is downloaded.
Start Frame
Memory
Write
Image Data
Frame 1
Any
Command
Start Frame
Memory
Write
Image Data
Frame 2
Any
Command
StopStart
Any
Command
Note 1: These methods are applied to all data transfer color modes on both serial and parallel interfaces.
Note 2: The frame memory can contain both odd and even number of pixels for both methods. Only complete
pixel data will be stored in the frame memory.