UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 58

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

6.6 Duty Setting Register (R5)
Default settings (initial values set by reset command)
The display duty can be set to any duty ratio between 1/1 and 1/92, as is shown in Table 6-4.
Before modifying this register, be sure to use the HALT command (control register 1 (R0)) to stop internal operations.
Also, be sure to set this register again after input the reset command.
Caution The display size can not be over 1/92 duty ( 5CH). If 1/92 duty is exceeded, operation is not guaranteed.
RS
D
58
1
−
7
D
D
−
−
7
6
DT6
D
D
−
6
5
DT6
0
0
0
0
1
1
1
1
DT5
D
D
−
5
4
DT5
0
0
0
0
0
0
0
0
Table 6-4. Duty Setting Register (R5) Settings
DT4
D
D
−
4
3
DT4
0
0
0
0
1
1
1
1
DT3
D
D
Data Sheet S15745EJ2V0DS
−
3
2
DT3
0
0
0
0
1
1
1
1
:
DT2
D
D
−
2
1
DT2
0
0
0
0
0
0
0
0
DT1
D
D
−
1
0
DT1
0
0
1
1
0
1
1
0
DT0
D
0
DT0
0
1
0
1
1
0
1
0
inhibited
Duty
1/90
1/91
1/92
1/1
1/2
1/3
1/4
:
µ µ µ µ PD16488A