em65567 ELAN Microelectronics Corp, em65567 Datasheet - Page 15

• Manufacturer Part Number: em65567
• Description: Com/ Color Driver
• Manufacturer: ELAN Microelectronics Corp

6.
6.1 Power Supply Pins
6.2 LCD Power Supply Circuit Pins
* This specification is subject to be changed without notice.
Symbol
Symbol
CAP1+
CAP2+
CAP3+
CAP1-
CAP3-
VOUT
VREG
VSSH
VREF
VSSL
CAP2
VDD
VEE
Pin Description
V0
V1
V2
V3
V4
Supply
Supply
Supply
Supply
Supply
Power
Power
Power
Power
Power
I/O
I/O
O
O
O
O
O
O
O
O
I
Power supply pin for logic circuit to +1.8 to 3.3V
Ground pin for logic circuit, connect to 0V
Ground pin for high voltage circuit, connected to 0V
Bias power supply pin for LCD drive voltage
When using an external power supply, convert impedance by using resistance-division of LCD
drive power supply or operation amplifier before adding voltage to the pins. These voltages
should have following relationship: VSS<V4<V3<V2<V1<V0
When the internal power supply circuit is active, these voltages are generated by the built-in
booster and voltage converter. Then, must connect capacitor each to VSS.
Connecting pin for the built in booster’s capacitor + side.
The capacitor is connected between CAP1- and CAP1+.
Connecting pin for the built in booster’s capacitor - side.
The capacitor is connected between CAP1- and CAP1+.
Connecting pin for the built in booster’s capacitor + side.
The capacitor is connected between CAP2- and CAP2+.
Connecting pin for the built in booster’s capacitor - side.
The capacitor is connected between CAP2- and CAP2+.
Connecting pin for the built in booster’s capacitor + side.
The capacitor is connected between CAP3- and CAP3+.
Connecting pin for the built in booster’s capacitor - side.
The capacitor is connected between CAP3- and CAP3+.
Voltage input pin for generating reference power source
Voltage supply pin for booster circuit. Usually the same voltage level as VDD.
Output pin of boosted voltage in the built-in booster.
The capacitor must be connected between this pin and VSS.
Output pin for regulated voltage of VREG AMP.
The capacitor must be connected between this pin and VSS.
15
66 COM/ 96 SEG 256 Color STN LCD Driver
Description
Description
2003/1/9 (V0.1)
EM65567