EM65101
128COM/160SEG 16 Gray Scale Level LCD Driver
6 Pin Description
6.1 Power Supply Pins
Symbol
I/O
Description
Power
Supply
VDD
Power supply pin for logic circuit to +2.2 to 3.3V
Power
Supply
VSS
Ground pin, connect to 0V
Bias power supply pin for LCD drive voltage
When using an external power supply, convert the impedance by using the
resistance-division of the LCD drive power supply or operation amplifier before
adding the voltage to the pins. These voltages should have the 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, you must connect each
capacitor to VSS.
V0
V1
V2
V3
V4
Power
Supply
6.2 LCD Power Supply Circuit Pins
Symbol
I/O
Description
Connecting pin for the built-in booster’s capacitor + side.
The capacitor is connected between CAP1- and CAP1+.
CAP1+
O
Connecting pin for the built-in booster’s capacitor – side.
The capacitor is connected between CAP1- and CAP1+.
CAP1-
CAP2+
CAP2-
CAP3+
CAP3-
CAP4+
CAP5+
VEE
O
O
O
O
O
O
O
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+.
Connecting pin for the built-in booster’s capacitor + side.
The capacitor is connected between CAP2- and CAP4+.
Connecting pin for the built-in booster’s capacitor + side.
The capacitor is connected between CAP3- and CAP5+.
Power
Supply
Voltage supply pin for the booster circuit. Usually this has the same voltage
level as VDD.
Output pin of the boosted voltage in the built-in booster.
The capacitor must be connected between this pin and VSS.
VOUT
O
Output pin which is equal to 2 x VEE.
The capacitor must be connected between this pin and VSS.
V2X
VBA
O
O
O
Output pin for the regulator voltage of VBA AMP.
Output pin for temperature compensation output voltage
The capacitor must be connected between this pin and VSS.
VREF
10 •
Product Specification (V0.4) 08.15.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
