
ST7735R
V0.2
84
2009-08-05
10.1.3 RDDID (04h): Read Display ID
04H
RDDID (Read Display ID)
Inst / Para
D/CX
WRX
RDX
D17-8
D7
D6
D5
D4
D3
D2
D1
D0
HEX
RDDID
0
↑
1
-
0
0
0
0
0
1
0
0
(04h)
1
st
parameter
1
1
↑
-
-
-
-
-
-
-
-
-
-
2
nd
parameter
1
1
↑
-
ID17
ID16
ID15
ID14
ID13
ID12
ID11
ID10
3
rd
parameter
1
1
↑
-
1
ID26
ID25
ID24
ID23
ID22
ID21
ID20
4
th
parameter
1
1
↑
-
ID37
ID36
ID35
ID34
ID33
ID32
ID31
ID30
Description
-This read byte returns 24-bit display identification information.
-The 1st parameter is dummy data
-The 2nd parameter (ID17 to ID10): LCD module’s manufacturer ID.
-The 3rd parameter (ID26 to ID20): LCD module/driver version ID
-The 4th parameter (ID37 to UD30): LCD module/driver ID.
-Commands RDID1/2/3(DAh, DBh, DCh) read data correspond to the parameters 2,3,4 of the command 04h,
respectively.
“-“ Don’t care
Default
Default Value
Status
ID1
ID2
ID3
Power On Sequence
-
NV Value
NV Value
S/W Reset
-
NV Value
NV Value
H/W Reset
-
NV Value
NV Value
Flow Chart
Read 04h
Read 04h
Dummy
Clock
Dummy
Read
Send 2nd
parameter
Send 2nd
parameter
Send 3rd
parameter
Send 3rd
parameter
Send 4th
parameter
Send 4th
parameter
Serial I/F Mode
Parallel I/F Mode
Host
Display
Command
Parameter
Display
Action
Mode
Legend
Sequential
transter
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