a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
I/D[1:0] = 00
I/D[1:0] = 01
I/D[1:0] = 10
I/D[1:0] = 11
Horizontal : decrement Horizontal : increment
Horizontal : decrement Horizontal : increment
Vertical : decrement
Vertical : decrement
Vertical : increment
Vertical : increment
E
E
B
B
AM = 0
Horizontal
B
B
E
E
E
E
B
B
AM = 1
Vertical
B
B
E
E
Figure25 GRAM Access Direction Setting
ORG Moves the origin address according to the ID setting when a window address area is made. This
function is enabled when writing data with the window address area using high-speed RAM write.
ORG = “0”: The origin address is not moved. In this case, specify the address to start write operation
according to the GRAM address map within the window address area.
ORG = “1”: The original address “00000h” moves according to the I/D[1:0] setting.
Notes: 1. When ORG=1, only the origin address address”00000h” can be set in the RAM address set
registers R20h, and R21h.
2. In RAM read operation, make sure to set ORG=0.
BGR Swap the R and B order of written data.
BGR=”0”: Follow the RGB order to write the pixel data.
BGR=”1”: Swap the RGB data to BGR in writing into GRAM.
HWM Set HWM= “1” for high speed GRAM access. In the high-speed access mode, the data are written into
GRAM until the 4 words display had been received. If the received data are less than 4 words, the last
data will be ignored and not written into GRAM.
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