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 135 of 233
8.2.34. Write_Memory_Continue (3Ch)
3Ch Write_Memory_Continue
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1
↑
XX 0 0 1 1 1 1 0 0 3Ch
1
st
Parameter
1 1
↑
D1
[17..8]
D1
[7]
D1
[6]
D1
[5]
D1
[4]
D1
[3]
D1
[2]
D1
[1]
D1
[0]
000
3FF
X
th
Parameter
1 1
↑
Dx
[17..8]
Dx
[7]
Dx
[6]
Dx
[5]
Dx
[4]
Dx
[3]
Dx
[2]
Dx
[1]
Dx
[0]
000
3FF
N
th
Parameter
1 1
↑
Dn
[17..8]
Dn
[7]
Dn
[6]
Dn
[5]
Dn
[4]
Dn
[3]
Dn
[2]
Dn
[1]
Dn
[0]
000
3FF
Description
This command transfers image data from the host processor to the display module’s frame memory continuing from the
pixel location following the previous write_memory_continue or write_memory_start command.
If set_address_mode B5 = 0:
Data is written continuing from the pixel location after the write range of the previous write_memory_start or
write_memory_continue. The column register is then incremented and pixels are written to the frame memory until the
column register equals the End Column (EC) value. The column register is then reset to SC and the page register is
incremented. Pixels are written to the frame memory until the page register equals the End Page (EP) value and the
column register equals the EC value, or the host processor sends another command. If the number of pixels exceeds (EC –
SC + 1) * (EP – SP + 1) the extra pixels are ignored.
If set_address_mode B5 = 1:
Data is written continuing from the pixel location after the write range of the previous write_memory_start or
write_memory_continue. The page register is then incremented and pixels are written to the frame memory until the page
register equals the End Page (EP) value. The page register is then reset to SP and the column register is incremented.
Pixels are written to the frame memory until the column register equals the End column (EC) value and the page register
equals the EP value, or the host processor sends another command. If the number of pixels exceeds (EC – SC + 1) * (EP –
SP + 1) the extra pixels are ignored.
Sending any other command can stop frame Write.
Frame Memory Access and Interface setting (B3h), WEMODE=0
When the transfer number of data exceeds (EC-SC+1)*(EP-SP+1), the exceeding data will be ignored.
Frame Memory Access and Interface setting (B3h), WEMODE=1
When the transfer number of data exceeds (EC-SC+1)*(EP-SP+1), the column and page number will be reset, and the
exceeding data will be written into the following column and page.
Restriction
A write_memory_start should follow a set_column_address, set_page_address or set_address_mode to define the write
address. Otherwise, data written with write_memory_continue is written to undefined addresses.