ST7735
10.1.29 COLMOD (3Ah): Interface Pixel Format
3AH
Inst / Para
COLMOD
Parameter
COLMOD (3Ah): Interface Pixel Format
D/CX
WRX
RDX
D17-8 D7
D6
0
D5
1
D4
1
D3
1
D2
0
D1
1
D0
0
HEX
0
1
↑
↑
1
1
-
-
0
-
(3Ah)
-
-
-
-
IFPF2 IFPF1 IFPF0
This command is used to define the format of RGB picture data, which is to be transferred via the
MCU interface. The formats are shown in the table:
IFPF[2:0]
011
MCU Interface Color Format
12-bit/pixel
3
5
6
7
101
16-bit/pixel
Description
110
18-bit/pixel
111
No used
Note1: In 12-bit/Pixel, 16-bit/Pixel or 18-bit/Pixel mode, the LUT is applied to transfer data into the Frame Memory.
Note2: The Command 3Ah should be set at 55h when writing 16-bit/pixel data into frame memory, but 3Ah should be
re-set to 66h when reading pixel data from frame memory. Please check the LUT in chapter 9.17 when using
memory read function.
Status
Availability
Yes
Normal Mode On, Idle Mode Off, Sleep Out
Normal Mode On, Idle Mode On, Sleep Out
Partial Mode On, Idle Mode Off, Sleep Out
Partial Mode On, Idle Mode On, Sleep Out
Sleep In
Yes
Register
Availability
No
No
Yes
Status
Default Value
IFPF[2:0]
VIPF[3:0]
Power On Sequence
S/W Reset
0110(18-bit/Pixel)
No Change
0110(18-bit/Pixel)
No Change
Default
H/W Reset
0110(18-bit/Pixel)
0110(18-bit/Pixel)
Flow Chart
V1.7
114
2009-12-04
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
