Casio ZD-1

45
IC951: SM8140AM-ET
IC950: REC SPS-444-1
17
14 8
14 13 1112 10 89
1 32 4 65 7
V
CC
4B 4A 4Y 3B 3A 3Y
GND1A 1B 1Y 2A 2B 2Y
IC709: TC74VHCT08AFT
17
14
8
Enable Circuit
Charging Pump
Circuit
Level Shifter
Deviding Circuit
Oscillator for
boosting voltage
Level Shifter
Deviding Circuit
Oscillator for
EL
High Voltage
Switching Circuit
5 4 7 63
8
10
11
12
9 2 1 14 13
V
DD
LDR CHV OUT1 OUT2
ENA
CPO
CP1
CP2
V
SS
1 OCL1 OCL2 OCE1 OCE2
1 2 3
4 5
ABLC
BPF
+
TRAP
AMP
Limiter
Detector
Waveform
Shaper
RL
V
CC
V
OUT
GND
2
3
1
(GND)
4
(GND)
5