EM62100AGH datasheet(38/60 Pages) EMC

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EM62100

65 COM/132 SEG STN LCD Driver

32 •

•••

Product Specification (V1.1) 09.13.2005

(This specification is subject to change without further notice)

7.2.7 Read Display Data

Reads an 8-bit data from the display RAM area specified by the column address and

page address. Since the column address is automatically incremented by 1 after each

write, the microprocessor can continue to read data of multiple words. A single dummy

read is required immediately after a column address setup. For details, refer to the

display RAM section of the FUNCTIONAL DESCRIPTION. When serial interface is

used, reading from the display data becomes invalid.

RDB

WRB

Read data

7.2.8 ADC Select

Changes the relationship between the RAM column address and the segment driver.

This command specifies the order of the segment driver pads. The column address is

automatically incremented by 1 after every read or write operation is performed on the

display data.

RS RDB WRB D7

Hex

Setting

A0H

Normal

A1H

Reverse

7.2.9 Normal/Reverse Display

This command can reverse the lit and unlit display command without overwriting the

contents of the display data RAM. After executing this command, the display data RAM

contents are maintained.

RS RDB WRB D7

D0 Hex

Setting

A6H

RAM data "H"

LCD ON voltage

(normal)

A7H

RAM data "L"

LCD ON voltage

(reverse)

7.2.10 Entire Display ON

This command makes it possible to force all display points ON regardless of the

contents of the display data RAM. The contents of the DISPLAY DATA RAM are

maintained after executing this command. This command has priority over the

Normal/Reverse Display command. When D is low, the normal display status is

provided.

RS RDB WRB D7

D0 Hex

Setting

A4H Normal display mode

A5H Display all points ON

When D0 is high, the entire display ON status is provided. If the Entire Display ON

command is executed in the display OFF status, the LCD panel enters Power saving

mode. Refer to the Power Saving section for details.

EM62100AGH Datasheet(PDF) 38 Page - ELAN Microelectronics Corp

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