JVC KD-SH77R Service Manual page 25

BR24C32F-X (IC703) : EEPROM
8 5
1 4
3. Pin function
Symbol I/O
Pin No.
1 A0 I
2 A1 I
3 A2 I
4 GND -
5 SDA I/O
6 SCL I
7 WP I
8 Vcc -
NJM4580V-X (IC671) : Ope amp
1. Pin layout & Block diagram
1
A
2
B
3
4
2. Block diagram
A0 1
12bit
ADDRESS
A1 2
DECODER
A2 3
CONTROL LOGIC
GND 4
HIGH VOLTAGE GEN.
Function
Slave address set
Slave address set
Slave address set
Ground
Slave & Word address, Serial data input/Serial address output
Serial clock input
Write protect input
Power supply
8
7
6
8
32 kbit EEROM ARRAY
SLAVE/WARD
12bit
ADDRESS REGISTER
START STOP
Vcc LEVEL DETECT
2. Pin function
Pin
Function
No.
1 A output
2 A -input
3 A +input
4 V-
5 B +input
6 B -input
7 B output
8 V+
KD-SH77R/KD-SH55R
V Vcc
8bit
DATA
7 WP
REGISTER
6 SCL
ACK
5 SDA
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