EM65570
68COM/ 98SEG 65K Color STN LCD Driver
6 Pin Descriptions
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 for internal circuit, connect to 0V
Bias power supply pin for the LCD drive voltage
V0
V1
V2
V3
V4
These voltages should have the following correlation:
VSS<V4<V3<V2<V1<V0
Power
Supply
When the internal power supply circuit is active, these voltages are generated
by the built-in booster and voltage converter. You must connect each VSS to a
capacitor.
6.2 LCD Power Supply Circuit Pins
Symbol
I/O
Description
Connecting pin for the built-in booster capacitor + side.
The capacitor is connected between CAP1– and CAP1+.
CAP1+
O
Connecting pin for the built-in booster capacitor - side.
The capacitor is connected between CAP1– and CAP1+.
CAP1–
CAP2+
CAP2–
CAP3+
CAP4+
CAP5+
O
O
O
O
O
O
Connecting pin for the built-in booster capacitor + side.
The capacitor is connected between CAP2– and CAP2+.
Connecting pin for the built-in booster capacitor - side.
The capacitor is connected between CAP2– and CAP2+.
Connecting pin for the built-in booster capacitor + side.
The capacitor is connected between CAP1– and CAP3+.
Connecting pin for the built-in booster capacitor + side.
The capacitor is connected between CAP2– and CAP4+.
Connecting pin for the built-in booster capacitor + side.
The capacitor is connected between CAP1– and CAP5+.
Power
Supply
Voltage supply pin for the booster circuit.
Usually the same voltage level as VDD.
VEE
Output pin of the boosted voltage in the built-in booster.
The capacitor must be connected between this pin and VSS.
VOUT
VBA
O
O
O
Output pin for the regulator voltage of VBA AMP.
This pin should not be layed out on LCM ITO circuit.
Output pin for the temperature compensation output voltage.
This pin should not be layed out on LCM ITO circuit.
VREF
Product Specification (V1.0) 09.05.2005
• 13
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
