EM62100AGH datasheet(39/60 Pages) EMC

39 / 60 page

EM62100

65 COM/132 SEG STN LCD Driver

Product Specification (V1.1) 09.13.2005

•••• 33

(This specification is subject to change without further notice)

7.2.11 LCD Bias Set

This command specifies the voltage Bias ratio for the LCD.

Duty

RS RDB WRB D7 D6 D5 D4 D3 D2 D1 D0 Hex

1/33

1/49

1/55

1/65

A2H 1/6bias 1/8bias 1/8bias 1/9bias

A3H 1/5bias 1/6bias 1/6bias 1/7bias

7.2.12 Read-Modify-Write

A pair of Read-Modify-Write and End commands must always be used. Once

Read-Modify-Write is issued, the column address is not incremented by a Read Display

Data command but incremented by a Write Display Data command only. The current

contents of the column address register are saved. This mode remains active until an

“End” command is issued, after which, the column address returns to the address when

Read-Modify-Write command was issued. This can reduce the microprocessor load

when data of a specific display area is repeatedly changed during cursor blinking or

other events.

RDB

WRB

Hex

E0H

NOTE

Any command except Read/Write Display Data and Column Address Set can be

issued during Read-Modify-Write mode.

Set Page Address

Set Column Address

Read-Modify-Write

Dummy Read

Read Data

Write Data

Completed

End

Data

Processing

Yes

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