EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
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
* Bias Ratio set
* Electronic volume 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
Product Specification (V0.4) 08.15.2005
• 33
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
