ST ST7735R - 10.2.16 NVFCTR3 (DFh): NVM Write Command

ST7735R
V0.2 147 2009-08-05
10.2.16 NVFCTR3 (DFh): NVM Write Command
DFH NVFCTR1 (NV Memory Function Controller 3
Inst / Para
D/CX WRX RDX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
NVFCTR1
0 ↑ 1 - 1 1 0 1 1 1 1 1 (DFh)
1
st
parameter
1 ↑ 1
NVM_CMD7 NVM_CMD6 NVM_CMD5 NVM_CMD4 NVM_CMD3 NVM_CMD2 NVM_CMD1 NVM_CMD0
2
nd
parameter
1 ↑ 1 1 0 1 0 0 1 0 1 A5
Description
-NVM Write Command
-NVM_CMD[7:0] : Select to Program/Erase ; Program command : 3Ah ; Erase command : C5h
NOTE: “-“ Don’t care
Flow Chart
Command
Parameter
Display
Action
Mode
Legend
Sequential
transter
Wait 20ms
Modify CMD register
(C7h/D1h/D2h)
Enable NVM :
EXTC = “1”
CMD F1h, 44h
External VPP = 7.5V ON
NVM Program Flow
Erase
CMD DFh
1st Para C5h
2nd Para A5h
Program
CMD DFh
1st Para 3Ah
2nd Para A5h
Wait 20ms
Disable NVM :
EXTC = “0”
CMD F1h, 04h
External VPP = 7.5V OFF