Data Sheet

a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
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Page 114 of 233
8.2.22. Memory Write (2Ch)
2Ch RAMWR (Memory Write)
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1 ↑ XX 0 0 1 0 1 1 0 0 2Ch
1
st
Parameter 1 1 ↑ D1 [17:0] XX
: 1 1 ↑ Dx [17:0] XX
N
th
Parameter 1 1 ↑ Dn [17:0] XX
Description
This command is used to transfer data from MCU to frame memory. This command makes no change to the other driver
status. When this command is accepted, the column register and the page register are reset to the Start Column/Start
Page positions. The Start Column/Start Page positions are different in accordance with MADCTL setting.) Then D [17:0] is
stored in frame memory and the column register and the page register incremented. Sending any other command can stop
frame Write. X = Don’t care.
Restriction In all color modes, there is no restriction on length of parameters.
Register
Availability
Status Availability
Normal Mode On, Idle Mode Off, Sleep Out Yes
Normal Mode On, Idle Mode On, Sleep Out Yes
Partial Mode On, Idle Mode Off, Sleep Out Yes
Partial Mode On, Idle Mode On, Sleep Out Yes
Sleep In Yes
Default
Status Default Value
Power On Sequence Contents of memory is set randomly
SW Reset Contents of memory is not cleared
HW Reset Contents of memory is not cleared
Flow Chart
CASET (2Ah)
1st Parameter: SC[15:8]
2nd Parameter: SC[7:0]
3rd Parameter: EC[15:8]
4th Parmeter EC[7:0]
PASET (2Bh)
1st Parameter: SP[15:8]
2nd Parameter: SP[7:0]
3rd Parameter: EP[15:8]
4th Parameter: EP[7:0]
RAMWR(2Ch)
Image Data
D1[17:0],D2[17:0]..Dn[17:0]
Any Commend
If
Needed
If
Needed
Command
Parameter
Action
Mode
Legend
Sequential transfer
Display