UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 47

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

5.7.4 Display size settings
duty setting register (R5), as shown in Table 5-17.
5.7.5 Setting of LCD AC driver's inversion cycle and AC driver's inversion position
amount for each displayed frame via settings made in the AC driver inversion cycle register (R6) and the AC driver
inversion position shift register (R7) for normal display mode or via settings made in the partial AC driver inversion cycle
register (R8) and the partial AC driver inversion position shift register (R9) for partial display mode.
in Table 5-18, based on the NID6 to NID0 bit settings in the AC driver inversion cycle register (R6).
automatically overwritten by values from the corresponding DTYn bits.
the AC driver inversion position shift register (R7).
The PD16488A can be set for any duty value from 1/1 to 1/92. This duty setting can be made via bits DT6 to DT0 in the
Caution The duty setting can not be over 1/92 duty (5CH). If 1/92 duty is exceeded, operation is not guaranteed.
The PD16488A enable any setting to be made for the AC driver's inversion position and the inversion position shift
In normal display mode, the AC driver inversion cycle can be set for any number of inverted (reverse display) lines listed
If the screen display size has been changed via settings made in the duty setting register (R5), the NIDn values are
The shift amount for each displayed frame can be set as shown in Table 5-19 via settings made to bits MSD6 to MSD0 in
Caution The inversion line can not be over 92-inversion line (5CH). If 92-inversion line is exceeded, operation is
not guaranteed.
NID6
0
0
0
0
1
1
1
1
DT6
0
0
0
0
1
1
1
1
Table 5-18. Settings of AC Driver Inversion Cycle Register (R6)
NID5
0
0
0
0
0
0
0
0
DT5
0
0
0
0
0
0
0
0
NID4
0
0
0
0
1
1
1
1
DT4
0
0
0
0
1
1
1
1
Table 5-17. Duty Settings
Data Sheet S15745EJ2V0DS
NID3
0
0
0
0
1
1
1
1
:
DT3
0
0
0
0
1
1
1
1
:
NID2
0
0
0
0
0
0
0
1
DT2
0
0
0
0
0
0
0
1
NID1
0
0
1
1
0
1
1
0
DT1
0
0
1
1
0
1
1
0
NID0
0
1
0
1
1
0
1
0
DT0
0
1
0
1
1
0
1
0
Inverted Lines
prohibited
prohibited
Duty
1/90
1/91
1/92
1/1
1/2
1/3
1/4
90
91
92
1
2
3
4
:
:
PD16488A
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