EM65101AF datasheet(53/83 Pages) EMC

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EM65101

128COM/160SEG 16 Gray Scale Level LCD Driver

Product Specification (V0.4) 08.15.2005

• 47

(This specification is subject to change without further notice)

REF:

When MPU accesses display RAM, address X and data are switched. The

following figure shows the action of the REF.

1 1 0 0 0 1 0 1 1 0 1 0 0 0 0 1

1 0 1 1 0 0 1 1 1 1 1 0 0 1 1 1

00H

01H

4EH

4FH

SEG156

SEG157

SEG0

SEG1

SEG2

SEG3

SEG159

SEG158

1 1 1 0 0 1 1 1 1 0 1 1 0 0 1 1

1 0 1 0 0 0 0 1 1 1 0 0 0 1 0 1

1 1 0 0

0 1 0 1

1 0 1 0

0 0 0 1

0 1 1 1 1 1 1 0 0 0 1 1 1 0 1 1

Figure 8-1 REF Register Function

8.2.6 Increment Control Register Set

CSB

RDB WRB RE2 RE1 RE0

WIN AIM AYI AXI

(At the tine of reset: {WIN, AIM, AYI, AXI} = 0H, read address: 7H)

This register controls the increment mode and the window function when accessing

display RAM. The increment operation of the AXI and AYI registers are controlled by

the settings at the AIM, AYI, and AXI registers, and every write or read access to

display RAM. The AYI register directly connects to display RAM as Y address. The

AXI register connects to the address converter, and then outputs to display RAM as X

address in auto increment mode. The AXI and AYI registers are incremented, but do

not directly increment the X and Y addresses.

When setting this control register, the address increment operation can be made

without setting successive addresses for writing or reading data to display RAM from

MPU.

The WIN register is used for window function control.

WIN=”0”: Normal RAM access

WIN=”1”: Window function access

When using the window function to access RAM, be sure to set the following register

first.

WIN=”1,” AXI=”1,” AYI=”1”

X Address, Y Address, Window X End Address, Window Y End Address

In addition, the following condition must be met.

Window end X address ≧ Window start X address

Window end Y address ≧ Window start Y address

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