UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 67
UPD16488AP
Manufacturer Part Number
UPD16488AP
Description
1/92 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM
Manufacturer
NEC [NEC]
Datasheet
1.UPD16488AP.pdf
(91 pages)
- Current page: 67 of 91
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6.26 Power System Control Register 2 (R33)
Default settings (initial values set by reset command)
This command is used to control the on-chip register for V
VRR2 to VRR0
PVR2 to PVR0
RS
D
1
−
7
Flag
/RD
D
E
1
0
6
Table 6-12. Reference Values for V
When using normal display mode, power system control 2 (V
be used to change the resistance factor at 8 levels. The three flags in power system control 2 set the values shown
in Table 6-12 as reference values for (1 + Rb/Ra).
When using partial display mode, power system control 2 (V
be used to change the resistance factor at 8 levels. The three flags in power system control 2 set the values shown
in Table 6-12 as reference values for (1 + Rb/Ra).
R,/W
/WR
D
0
0
5
D
D
−
0
7
4
VRR2
D
D
VRR2
PVR2
−
6
3
0
0
0
0
1
1
1
1
VRR1
D
D
Data Sheet S15745EJ2V0DS
0
5
Register
2
VRR1
PVR1
LCD
0
0
1
1
0
0
1
1
VRR0
Internal Resistance Factor Regulator Register
D
D
0
4
1
LCD
VRR0
PVR0
voltage regualation.
0
1
0
1
0
1
0
1
Function
D
D
−
0
3
0
LCD
LCD
1+Rb/Ra
PVR2
D
regulator resistance factor setting command) can
regulator resistance factor setting command) can
12
13
16
19
21
24
5
8
2
PVR1
D
1
PVR0
D
0
Setting
µ µ µ µ PD16488A
−
67
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