No. 7191-22/50
LC74735W
Command 25 (Output control 3 settings command)
First byte
Second byte
DA0 to 7
Register
Content
Notes
State
Function
7
—
1
6
—
0
Command 2 identification code
5
—
1
Display character data write settings
4
—
0
3
—
0
2
—
1
Extended command identification code 5
1
0
0
1
DA0 to 7
Register
Content
Notes
State
Function
7
—
0
6
—
0
5
—
0
4
OTMD2
0
1
3
OTMD1
0
1
2
OTMD0
0
1
1
QRM1
0
1
0
0
QRM0
1
A0:17 output selection
OTMD2 OTMD1 OTMD0
0
0
0
0
0
1
0
1
Output
Normal
RGB No. 1
RGB No. 2
High-impedance state
0
1
0
1
ROM selection when character output is specified
in QVGA mode
QRM1
0
0
1
1
QRM0
0
1
0
1
ROM selection
ROM1
ROM2
ROM3
ROM4
*
: This register is set to the all bits zero state when the IC is reset by the RST pin.
When RGB No. 1 or RGB No. 2 is selected:
The A17:9 output is set to the
RDB2 to BD0 three-value output. (Supported by connecting external resistors.)
*
It will not be possible to use external ROM in this case. (Only internal ROM can be used.)
No. 1: RGB = 000 = Black only. Here the output will go to the high-impedance state giving the middle level due to the external resistor.
For areas other than the display area, the output will be at the low level.
No. 2: When any individual color is zero, the output will go to the high-impedance state giving the middle level due to the external resistor.
For areas other than the display area, the output will be at the low level.