Description Of Major Ics - JVC KD-LH7R Service Manual

KD-LH7R

Description of major ICs

BR24C01AFV-W-X (IC502) : EEPROM
1.Pin layout
Vcc
A0
2.Block diagram
A0 1
A1 2
A2 3
GND 4
HIGH VOLTAGE GEN.
3.Pin function
Pin name
Vcc
GND
A0,A1,A2
SCL
SDA
WP
*1 An open drain output requires a pull-up resister.
1-24
WP SCL SDA
A1 A2 GND
1kbit EEPROM ARRAY
7bit
SLAVE/WORD
ADDRESS
7bit
ADDRESS REGISTER
DECODER
START STOP
CONTROL LOGIC
Vcc LEVEL DETECT
I/O
-
Power supply
-
Ground (0v)
IN
Slave address set
IN
Serial clock input
Slave and word address,
IN / OUT
serial data input, serial data output *1
IN
Write protect input
8bit
DATA
REGISTER
ACK
Function
8 Vcc
7 WP
6 SCL
5 SDA