Casio PCRT275 Owners Manual - Page 24
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8. IC DATA 1. ULN2003AFW (IC1, IC2) I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 GND 10 20 O1 19 O2 18 O3 17 O4 16 O5 15 O6 14 O7 11 COMMON 2. S-80819CNNB-B8E (IC6), S-80850CNNB-B9B (IC7) 4 3 1 2 No. Symbol Description 1 OUT Voltage detection output pin 2 VDD Voltage input pin 3 NC*1 Non-connected 4 VSS Ground pin *1. NC pin is electrically open. Connecting this pin to VDD or VSS is allowed. VDD *1 VREF VSS 3. LB1846M (IC8) VCC 1 IN4 2 IN3 3 IN1 4 IN2 5 VCC 10 OUT4 9 OUT3 8 OUT1 7 OUT2 6 GND 30kΩ IN1 30kΩ 30kΩ IN2 30kΩ 30kΩ IN3 30kΩ Control block Thermal shutdown circuit 30kΩ IN4 30kΩ - 22 - OUT *1 10µF OUT1 Stepping Motor OUT2 OUT3 OUT4 GND
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8. IC DATA
3. LB1846M (IC8)
10 OUT4
OUT3
OUT1
OUT2
1
2
3
4
9
8
7
5
6
VCC
IN2
IN4
IN3
IN1
GND
VCC
Control block
Thermal shutdown circuit
OUT1
10
µ
F
Stepping
Motor
OUT2
OUT3
OUT4
GND
IN4
30k
Ω
30k
Ω
IN3
30k
Ω
30k
Ω
IN2
30k
Ω
30k
Ω
IN1
30k
Ω
30k
Ω
1. ULN2003AFW (IC1, IC2)
11
14
15
16
17
18
19
20 O1
O2
O3
O4
O5
O6
O7
COMMON
1
2
3
4
5
6
7
10
I1
I2
I3
I4
I5
I6
I7
GND
2. S-80819CNNB-B8E (IC6), S-80850CNNB-B9B (IC7)
1
4
3
2
VDD
VSS
VREF
OUT
*1
*1
No.
1
2
3
4
Symbol
OUT
VDD
NC*
1
VSS
Description
Voltage detection output pin
Voltage input pin
Non-connected
Ground pin
*1.
NC pin is electrically open.
Connecting this pin to VDD or VSS is allowed.