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UPD16488AP Datasheet(PDF) 69 Page - NEC

Part # UPD16488AP
Description  1/92 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM
PDF  91 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD16488AP Datasheet(HTML) 69 Page - NEC

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Data Sheet S15745EJ2V0DS
69
µµµµPD16488A
6.28 Electronic Volume Register (R35)
The electronic volume register specifies the electronic volume value for adjusting the contrast when using normal display
mode. Any value among 256 steps can be selected.
RS
D7
D6
D5
D4
D3
D2
D1
D0
Setting
1
EV7
EV6
EV5
EV4
EV3
EV2
EV1
EV0
−
Default settings (initial values set by reset command)
D7
D6
D5
D4
D3
D2
D1
D0
00000000
6.29 Partial Electronic Volume Register (R36)
The partial electronic volume register specifies the electronic volume value for adjusting the contrast when using partial
display mode. Any value among 256 steps can be selected.
RS
D7
D6
D5
D4
D3
D2
D1
D0
Setting
1
PEV7
PEV6
PEV5
PEV4
PEV3
PEV2
PEV1
PEV0
−
Default settings (initial values set by reset command)
D7
D6
D5
D4
D3
D2
D1
D0
00000000
6.30 Boost Adjustment Register (R37)
The voltage (range: 1/8 VDD2 to 7/8 VDD2) set to this register is applied to the boost level set for the booster.
RS
D7
D6
D5
D4
D3
D2
D1
D0
Setting
1
−−−−−
DDC2
DDC1
DDC0
−
Table 6-13. Boost Adjustment Register (R37) Settings
DDC2
DDC1
DDC0
Boost Adjustment Voltage
0
0
0
Regulator Circuit Stopped
0
0
1
1/8 VDD2
0
1
0
2/8 VDD2
0
1
1
3/8 VDD2
1
0
0
4/8 VDD2
1
0
1
5/8 VDD2
1
1
0
6/8 VDD2
1
1
1
7/8 VDD2
Default settings (initial values set by reset command)
D7
D6
D5
D4
D3
D2
D1
D0
−−−−−
000



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