EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 56

• Manufacturer Part Number: EM65568
• Description: 130 Com/ 128 Seg 4096 Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

EM65568
130 COM/ 128 SEG 4096 Color STN LCD Driver
Select a display duty ratio for the partial display from 1/10 to 1/130 using the DS(Lcd duty ratio) register.
Set the most suitable values for LCD drive bias ratio, LCD drive voltage, electronic volume, the number of boosting steps, and
others according to the actually used LCD panel and the selected duty ratio.
7.28 Discharge circuit
The EM65568 has built-in the discharge circuit, which discharges electricity from capacitors for a stability of power sources
(V0~V4).
The discharge circuit is valid, while the DIS register is set to “1”. When the built-in power supply is used, should be set
DIS=”1” after the power source is turned off (DCON, AMPON)=(0, 0). And don’t turn on both the built-in power source and
the external power source (V0~V4, VOUT) while DIS=”1”.
* This specification is subject to be changed without notice.
56
2005/3/8 (V1.2)