EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
8.2.9 Booster Setup (VU)
D7 D6 D5 D4 D3 D2 D1 D0
CSB RS RDB WRB RE2 RE1 RE0
1
0
1
1
VU2 VU1 VU0
0
1
1
0
0
0
0
*
(At the time of reset: {VU2, VU1, VU0} = 5H, read address: BH)
The booster steps are set to the VU register
VU2
0
VU1
0
VU0
0
Booster Operation
Booster disable (No operation)
2 times voltage output
3 times voltage output
4 times voltage output
5 times voltage output
6 times voltage output
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
Prohibited code
1
1
1
8.2.10 Bias Setting Register (B)
D7 D6 D5 D4 D3 D2 D1 D0
CSB RS RDB WRB RE2 RE1 RE0
1
1
0
0
B3 B2 B1 B0
0
1
1
0
0
0
0
(At the time of reset: {B3, B2, B1, B0} = 8H, read address: CH)
This register is used to set a bias ratio. A bias ratio can be selected from 1/4 to 1/13
through B3, B2, B1, and B0 set up.
B3
B2
B1
B0
Bias
0
0
0
0
0
0
0
0
1
1
1
:
0
0
0
0
1
1
1
1
0
0
0
:
0
0
1
1
0
0
1
1
0
0
1
:
0
1
0
1
0
1
0
1
0
1
0
:
1/4 Bias
1/5 Bias
1/6 Bias
1/7 Bias
1/8 Bias
1/9 Bias
1/10 Bias
1/11 Bias
1/12 Bias
1/13 Bias
Prohibited code
1
1
1
1
NOTE
When setting bias=1/4 and 1/5, V4 must be less than the VDD voltage
52 •
Product Specification (V0.4) 08.15.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
