Description Of Major Ics - JVC KD-LH7R Service Manual

KD-LH7R
QQ
3 7 63 1515 0

Description of major ICs

BR24C01AFV-W-X (IC502) : EEPROM
1.Pin layout
Vcc
A0
2.Block diagram
A0 1
A1 2
TE
L 13942296513
A2 3
GND 4
HIGH VOLTAGE GEN.
3.Pin function
Pin name
Vcc
GND
A0,A1,A2
SCL
SDA
www
WP
*1 An open drain output requires a pull-up resister.
1-24
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WP SCL SDA
A1 A2 GND
1kbit EEPROM ARRAY
7bit
ADDRESS SLAVE/WORD
7bit
DECODER ADDRESS REGISTER
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
x ao
y
. i
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8
8bit
DATA
REGISTER
Q Q
3 6 7 1 3
ACK
Function
u163
.
2 9 9 4 2 8
8 Vcc
7 WP
1 5 0 5 8 2 9 9 4
6 SCL
5 SDA
m
co
9 9
2 8 9 9