EM65168 ELAN Microelectronics Corp, EM65168 Datasheet - Page 21

• Manufacturer Part Number: EM65168
• Description: 80 Com/seg Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.0) 04.26.2006
(This specification is subject to change without further notice)
RES
The internal circuit can be initialized. This register, which is a read-only bit, is effective
only in Master operation mode.
RES = “0” : Normal operation
RES = “1” : Initialization is ON
When the reset operation begins internally after RES register is set to “1”, the RES
register is automatically cleared to “0”.
[Caution: It is necessary to wait for more than 20 ms after setting the RES bit]
HPM
The HPM register is the power control for the power supply circuit for liquid crystal
drive.
HPM = “0” : Normal mode
HPM = “1” : High power mode
DON
The DON register controls the turning on/off of the LCD display.
DON= “0” : Display OFF (All COM/SEG output GND level)
DON= “1” : Display ON
The RF registers (RF2, RF1, RF0) can control the resistance ratio of the RC
oscillator. Hence, the frame frequency can change the RF registers setting.
RF2
For large LCD panel (heavy loading), use high power mode and add one resistor
(100~200 K
0
0
0
0
1
1
1
1
Ω
RF1
) between Pin V4 and Pin VSS.
0
0
1
1
0
0
1
1
RF0
0
1
0
1
0
1
0
1
NOTE
Initial resistance ratio
1.2 times initial resistance ratio
0.9 times initial resistance ratio
Initial resistance ratio
0.8 times initial resistance ratio
Initial resistance ratio
1.1 times initial resistance ratio
Initial resistance ratio
Operation
80 COM/SEG LCD Driver
EM65168
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