
ST7735R
V0.2
106
2009-08-05
10.1.21 RAMWR (2Ch): Memory Write
2CH
RAMWR (Memory Write)
Inst / Para
D/CX
WRX
RDX
D17-8
D7
D6
D5
D4
D3
D2
D1
D0
HEX
RAMWR
0
↑
1
-
0
0
1
0
1
1
0
0
(2Ch)
1st parameter
1
↑
1
D17-8
D7
D6
D5
D4
D3
D2
D1
D0
∣
1
↑
1
∣
∣
∣
∣
∣
∣
∣
∣
∣
Nth parameter
1
↑
1
D17-8
D7
D6
D5
D4
D3
D2
D1
D0
Description
In all color modes, there is no restriction on length of parameters.
1. 128X160 memory base (GM = ‘11’)
128x160x18-bit memory can be written by this command
Memory range: (0000h, 0000h) -> (007Fh, 09Fh)
2. 132x162 memory base (GM = ‘00’)
132x162x18-bit memory can be written on this command.
Memory range: (0000h, 0000h) -> (0083h, 00A1h)
Default
Status
Default Value
Power On Sequence
Contents of memory is set randomly
S/W Reset
Contents of memory is not cleared
H/W Reset
Contents of memory is not cleared
Flow Chart
Command
Parameter
Display
Action
Mode
Legend
Sequential
transter
RAMWR
Image Data D1[7:0],D2[7:0]
…….Dn[7:0]
Any Command
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