EM78862B View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

MFG CO.

EM78862B

8-Bit RISC Type Microprocessor

ELAN Microelectronics 

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EM78862B

8-Bit RISC Type Microprocessor

6.8.4 LCD Bias Control

6.8.4.1 IOCE (Bias Control Register)

Bit 7

P9SH

Bit 6

P9SL

Bit 5

P6S

Bit 4

BIAS3

Bit 3

BIAS2

Bit 2

BIAS1

Bit 1

0

Bit 0

SC

Bit 2 ~ 4: (BIAS1~BIAS3) Control bits used to choose LCD operation voltage. See Fig. 14

below for the applicable circuit.

LCD Operating Voltage

000

001

010

011

100

101

110

111

LCD Vop (VDD=5V)

3.0V

3.3V

3.7V

4.0V

4.4V

4.7V

4.8V

5.0V

Ratio

0.60 VDD

0.66 VDD

0.74 VDD

0.82 VDD

0.87 VDD

0.93 VDD

0.96 VDD

1.00 VDD

Fig. 14 LCD Bias Circuit

This specification is subject to change without further notice.

Mar.01.2005 (V1.1)27 of 36

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