UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 65

• Manufacturer Part Number: UPD16488AP
• Description: 1/92 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM
• Manufacturer: NEC [NEC]

6.23 Gray Scale Data Registers 1 to 4 (R23 to R26)
this register optimizes the gray scale display.
Default settings (initial values set by reset command, for all gray scale data registers)
6.24 Partial Gray Scale Data Registers 1 to 4 (R27 to R30)
Use of this register optimizes the gray scale display.
Default settings (initial values set by reset command, for all partial gray scale data registers)
The gray scale data registers specify the gray scale level when using normal four-level gray scale display mode. Use of
The partial gray scale data registers specify the gray scale level when using partial four-level gray scale display mode.
R23
R24
R25
R26
R27
R28
R29
R30
Rx
D
Rx
D
−
−
7
7
Data
Data
0, 0
0, 1
1, 0
1, 1
0, 0
0, 1
1, 0
1, 1
D
D
−
−
6
6
RS
RS
D
D
1
1
1
1
0
1
1
1
1
0
5
5
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
D
D
D
D
D
D
−
−
−
−
0
−
−
−
−
0
7
7
4
7
7
4
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
D
D
D
D
D
D
−
−
−
−
0
−
−
−
−
0
6
6
3
6
6
3
PGD5
PGD5
PGD5
PGD5
GD5
GD5
GD5
GD5
D
D
D
D
D
D
Data Sheet S15745EJ2V0DS
0
0
0
0
0
0
0
0
0
0
0
1
0
1
5
5
2
5
5
2
PGD4
PGD4
PGD4
PGD4
GD4
GD4
GD4
GD4
D
D
D
D
D
D
0
0
0
0
1
0
0
0
0
0
0
1
0
0
:
:
4
4
1
4
4
1
PGD3
PGD3
PGD3
PGD3
GD3
GD3
GD3
GD3
D
D
D
D
D
D
0
0
0
0
1
0
0
0
0
0
1
0
0
0
3
3
0
3
3
0
PGD2
PGD2
PGD2
PGD2
GD2
GD2
GD2
GD2
D
D
D
D
0
0
0
0
1
0
0
0
0
0
1
0
2
2
2
2
PGD1
PGD1
PGD1
PGD1
GD1
GD1
GD1
GD1
D
D
D
D
0
0
1
1
1
0
0
1
1
1
0
0
1
1
1
1
PGD0
PGD0
PGD0
PGD0
GD0
GD0
GD0
GD0
D
D
D
D
0
1
0
1
1
0
0
1
0
1
1
0
0
0
0
0
Gray scale level
Gray scale level
Level 31
Level 31
Level 32
Level 32
Setting
Level 0
Level 1
Level 2
Level 3
Setting
Level 0
Level 1
Level 2
Level 3
µ µ µ µ PD16488A
−
−
−
−
−
−
−
−
:
:
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