ST7093 Datasheet, PDF (31/43 Pages) Sitronix Technology Co., Ltd. – 26 COM / 80 SEG LCD CONTROLLER/DRIVER

ST7093
Voltage generator circuit
VDD
- ^C1
+ ^C1
Ra Rb
Vdd
Cap1+
Cap1-
Cap2+
Cap2-
Vout
VR
GND
-+
C2
C2
V0
V1
C2
V2
C2
V3
C2
V4
Vss
C1: 0.1 .. 4.7Uf
C2: 0.1uF
Ra: 1MΩ Rb:1.5MΩ
GND
When built-in power supply is used (VC,VR,VF = 1,1,1)
VDD
External
l
GND
Ra Rb
Vdd
Cap1+
Cap1-
Cap2+
Cap2-
Vout
VR
GND
-+
V0
C2
V1
C2
V2
C2
C2
C2
V3
V4
Vss
GND
(VC,VR,VF= 0,1,1)
VDD
External
Power supply
Vdd
Cap1+
Cap1-
Cap2+
Cap2-
Vout
VR
GND
-+
V0
C2
V1
C2
V2
C2
C2
C2
V3
V4
Vss
GND
(VC,VR,VF= 0,0,1)
VDD
Vdd
Cap1+
Cap1-
Cap2+
Cap2-
Vout
VR
External
V0
Power
V1
supply
V2
V3
V4
Vss
GND
(VC,VR,VF= 0,0,0)
When external power supply is used (C2:01 to 4.7uF)
Ver 2.1
31/43
2003/09/23