EM65571
130COM/128SEG 65K Color STN LCD Driver
6 Pin Description
6.1 Power Supply Pins
Symbol
I/O
Description
VDD
−
Power supply pin for logic circuit, +2.2V to 3.3V
Ground pin for logic circuit, connected to 0V
Ground pin for high voltage circuit, connected to 0V
Bias power supply pin for LCD drive voltage
VSSL
VSSH
−
−
When using an external power supply, convert the impedance by
using resistance-division of the LCD drive power supply or operation
amplifier before adding voltage to the pins. These voltages should
have the following relationship: VSS<V4<V3<V2<V1<V0
V0
V1
V2
V3
V4
−
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.
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+
CAP4+
CAP5+
CAP6+
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 CAP1- 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 CAP1- and CAP5+.
Connecting pin for the built in booster’s capacitor + side.
The capacitor is connected between CAP2- and CAP6+.
Voltage supply pin for the booster circuit. Usually the same voltage
level as VDD. In the case of TCP, draw it at a separate terminal.
Output pin of boosted voltage in the built-in booster.
VOUT
O
The capacitor must be connected between this pin and the VSS.
VBA
O
O
Output pin for regulator voltage of VBA AMP.
VREF
Output pin for temperature compensation output voltage.
14 •
Product Specification (V1.0) 08.04.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
