EM65570 ELAN Microelectronics Corp, EM65570 Datasheet - Page 52

• Manufacturer Part Number: EM65570
• Description: 68com / 98seg 65k Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

EM65570
68COM/ 98SEG 65K Color STN LCD Driver
46 x
7.21
Partial Display Function
The EM65570 has the partial display function, which can display a part of the 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 EM65570 consumes
less power. Partial display function is most suitable for clock indication or calendar
indication when portable equipment is on stand-by.
When using the partial display function, it is necessary to keep the following sequence.
ELAN
LCD DRIVER
Low Power and
Low Voltage
Normal Display
Figure 7-20 Partial Display Function Sequential Flow Diagram
Power circuit off (DCON= "0", AMPON= "0")
Power circuit on (DCON= "1", AMPON= "1")
* Boost step set
* Bias Ratio set
* Duty Ratio set
Figure 7-19 Partial Display Block Diagram
Display off (ON/OFF= "0")
Display on (ON/OFF= "1")
Setting Power Function
Setting Display Function
Any display condition
Partial Display
WAIT
WAIT
* Display start common
* Electronic volume set
(This specification is subject to change without further notice)
LCD DRIVER
Partial Display
Product Specification (V1.0) 09.05.2005