EM65101AF datasheet(39/83 Pages) EMC

39 / 83 page

EM65101

128COM/160SEG 16 Gray Scale Level LCD Driver

Product Specification (V0.4) 08.15.2005

• 33

(This specification is subject to change without further notice)

7.14 Partial Display Function

The EM65101 has a partial display function, which can display a part of graphic display

area. This function is used to set lower bias ratio, lower boost step, and lower LCD

drive voltage. When setting the partial display function, the EM65101 consumes less

power. The Partial display function is suitable for clock indication or calendar indication

when portable equipment is on stand-by.

ELAN

LCD DRIVER

Low Power and

Low Voltage

LCD DRIVER

Normal Display

Partial Display

Figure 7-16 Partial Display Block Diagram

When using the partial display function, it is necessary to follow the sequence shown

below.

Any display condition

Display off (ON/OFF= "0")

Power circuit off (DCON= "0", AMPON= "0")

WAIT

Setting Power Function

* Boost step set

* Electronic volume set

* Bias Ratio set

Power circuit on (DCON= "1", AMPON= "1")

WAIT

Setting Display Function

* Duty Ratio set

* Display start common

Display on (ON/OFF= "1")

Partial Display

Figure 7-17 Partial Display Function Sequential Flow

EM65101AF Datasheet(PDF) 39 Page - ELAN Microelectronics Corp