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 200 of 233
9.3. MCU to memory write/read direction
B
E
ILITEK
Data stream from MCU is
like this figure
The data is written in the order illustrated above. The Counter which dictates where in the physical memory the
data is to be written is controlled by “Memory Data Access Control” Command, Bits B5, B6, and B7 as described
below.
Physical axes
(0,0)
(0,319) (239,319)
Physical Column
Pointer
Physical Page
Pointer
MADCTL
Virtual (0,0) when
B5=don t care,
B6= 1", B7= 0"
Virtual (0,0) when
B5=don t care,
B6= 1", B7= 1"
Bit B7 Bit B6 Bit B5
PASET
CASET
Virtual (0,0) when
B5=don t care,
B6= 0", B7= 1"
Virtual (0,0) when
B5=don t care,
B6= 0", B7= 0"
Virtual Physical Pointer
Translator
B5 B6 B7 CASET PASET
0 0 0 Direct to Physical Column Pointer Direct to Physical Page Pointer
0 0 1 Direct to Physical Column Pointer Direct to (319-Physical Page Pointer)
0 1 0 Direct to (239-Physical Column Pointer) Direct to Physical Page Pointer
0 1 1 Direct to (239-Physical Column Pointer) Direct to (319-Physical Page Pointer)
1 0 0 Direct to Physical Page Pointer Direct to Physical Column Pointer
1 0 1 Direct to (319-Physical Page Pointer) Direct to Physical Column Pointer
1 1 0 Direct to Physical Page Pointer Direct to (239-Physical Column Pointer)
1 1 1 Direct to (319-Physical Page Pointer) Direct to (239-Physical Column Pointer)
Condition Column Counter Page counter
When RAMWR/RAMRD command is accepted Return to “Start column” Return to “Start Page”
Complete Pixel Read/Write action Increment by 1 No change
The Column values is large than “End Column” Return to “Start column” Increment by 1
The Page counter is large than “End Page” Return to “Start column” Return to “Start Page”