ST7920 - Topwaydisplay.com

ST7920
Absolute Maximum Ratings
Characteristics Symbol Value
Power Supply Voltage V DD -0.3V to +5.5V
LCD Driver Voltage V LCD -0.3V to +7.0V
Input Voltage V IN -0.3V to V DD +0.3V
Operating Temperature T A -20 o C to + 85 o C
Storage Temperature T STO -55 o C to + 125 o C
DC Characteristics ( T A = 25 o C , V DD = 2.7 V – 4.5 V )
Symbol Characteristics Test Condition Min. Typ. Max. Unit
V DD Operating Voltage - 2.7 - 5.5 V
V LCD LCD Voltage V0-V SS 3.0 - 7 V
I CC
V IH1
V IL1
V IH2
V IL2
V OH1
V OL1
V OH2
V OL2
Power Supply Current f OSC = 530KHz, V DD =3.0V
Rf=18KΩ
- 0.20 0.45 mA
Input High Voltage
- 0.7V DD - V DD V
(Except OSC1)
Input Low Voltage
- - 0.3 - 0.6 V
(Except OSC1)
Input High Voltage
- V DD –1 - V DD V
(OSC1)
Input Low Voltage
- - - 1.0 V
(OSC1)
Output High Voltage I OH = -0.1mA 0.8V DD - V DD V
(DB0 - DB7)
Output Low Voltage I OL = 0.1mA - - 0.1 V
(DB0 - DB7)
Output High Voltage
(Except DB0 - DB7)
I OH = -0.04mA 0.8V DD - V DD V
Output Low Voltage I OL = 0.04mA - - 0.1V DD V
(Except DB0 - DB7)
I LEAK Input Leakage Current V IN = 0V to V DD -1 - 1 µA
I PUP Pull Up MOS Current V DD = 3V 22 27 32 µA
C3.0 32/47 2002/10/11