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