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 80 of 233
7.6.7. 6-bit Parallel RGB Interface
The 6-bit RGB interface is selected by setting the DPI [2:0] bit to “110”. When RCM [1:0] are set to “10” and DE
mode is selected, the display operation is synchronized with VSYNC, HSYNC and DOTCLK signals. The
display data are transferred to the internal GRAM in synchronization with the display operation via 6-bit RGB
data bus (D [5:0]) according to the data enable signal (DE) when RCM [1:0] are set to “10”. The RGB interface
SYNC mode is selected by setting the RCM [1:0] to “11”, the valid display data is inputted in pixel unit via D [5:0]
according to the VFP/VBP and HFP/HBP settings. Unused pins must be connected to GND to ensure normally
operation. Registers can be set by the SPI system interface.
65K color: 16-bit/pixel (RGB 5-6-5 bits input)
262K color: 18-bit/pixel (RGB 6-6-6 bits input)
ILI9341 has data transfer counters to count the first, second, third data transfer in 6-bit RGB interface mode. The
transfer counter is always reset to the state of first data transfer on the falling edge of VSYNC. If a mismatch
arises in the number of each data transfer, the counter is reset to the state of first data transfer at the start of the
frame (i.e. on the falling edge of VSYNC) to restart data transfer in the correct order from the next frame. This
function is expedient for moving picture display, which requires consecutive data transfer in light of minimizing
effects from failed data transfer and enabling the system to return to a normal state.
Note that internal display operation is performed in units of pixels (RGB: taking 3 inputs of DOTCLK).
Accordingly, the number of DOTCLK inputs in one frame period must be a multiple of 3 to complete data transfer
correctly. Otherwise it will affect the display of that frame as well as the next frame.