EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 76

• Manufacturer Part Number: EM65568
• Description: 130 Com/ 128 Seg 4096 Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

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8.2.11 Bias Setting Register (B)
(At the time of reset: {B2,B1,B0}=0H, read address: EH)
This register is used to set a bias ratio. A bias ratio can be selected from 1/5 to 1/12 by setting B2, B1, and B0.
8.2.12 Register Access Control
(At the time of reset: {TST0,RE2,RE1,RE0}=0H, read address: FH)
The RE register set to number of register bank. Access to each control register, set RE register at first.
8-13 Gradation Palette Register (PA0~PA7, PB0~PB7, PC0~PC7)
(Read address: 0H)
* This specification is subject to be changed without notice.
D7
D7
D7
VU2
1
1
0
B2
The TST0 register use for test of LSI, Therefore this register must be set to “0”
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
á³ Mark shows “Don’t care”
á³ Mark shows “Don’t care”
D6
D6
D6
1
1
0
VU1
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D5
D5
D5
1
1
0
VU0
D4
D4
D4
B0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
TST0 RE2 RE1 RE0
/PA83
PA03
D3
D3
á
D3
Booster disable (No operation)
2 times voltage output
3 times voltage output
4 times voltage output
5 times voltage output
6 times voltage output
Prohibit code
Prohibit code
1/5 Bias
1/6 Bias
1/7 Bias
1/8 Bias
1/9 Bias
1/10 Bias
1/11 Bias
1/12 Bias
/PA82
PA02
D2
D2
B2
D2
/PA81
PA01
D1
B1
D1
D1
Booster Operation
Bias
/PA80
D0
B0
D0
PA00
D0
CSB
CSB
130 COM/ 128 SEG 4096 Color STN LCD Driver
0
0
CSB
0
76
RS
RS
1
1
RS
1
RDB WRB RE2 RE1 RE0
RDB WRB RE2 RE1 RE0
RDB WRB RE2 RE1 RE0
1
1
1
0
0
0
0/1
0
0
0/1
0
0
0/1
0
1
2005/3/8 (V1.2)
EM65568