JVC KD-LX111R Service Manual page 15

KD-LX111R
BR24C32F-X (IC703) : EEPROM
1. Pin layout
Vdd WPIN
A0 A1
3. Block diagram
A0 1
Address
A1 2
decoder
A2 3
GND 4
High voltage osc circuit
HD74HC126FP (IC771) : Changer control
OE1 1
A1
2
Y1 3
OE2 4
A2 5
Y2
6
Vss 7
HD74HC126
1-30
2. Pin function
SCL SDA
A0,A1,A2
A2 GND
16kbit EEPROM allay
11bit
Slave Word
11bit
Address resister
STOP
START
Control circuit
Power supply
voltage det.
Vcc
14
OE4
13
A4
12
Y4
11
OE3
10
A3
9
Y3
8
Symbol I/O
Vdd - Power supply.
GND - GND
I No use connect to GND.
SCL I Serial clock input.
SDA I/O Serial data I/O of slave and word address.
WPIN I Write protect terminal.
8bit
Data
resister
ACK
Function
8 Vdd
7 WPIN
6 SCL
5 SDA