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4.3 BR24C32F (IC703) : EEPROM
• Pin Layout
• Pin layout & Block diagram
• Pin function
4.4 HD74HC126FP (IC771) : Changer Control
SDASCLWP
BR24C32/F
VCC
GNDA2A1A0
PIN NAME I/O Function
VCC - Power Supply
GND - Ground (0V)
A0-A2 I Slave Address Set
SCL I Serial Clock Input
SDA I/O Slave and Word Address.
Serial Data Input$ Serial Data Output *1
WP I Write Protect Input
1
2
3
4
8
7
6
5
Vcc
WP
SCL
SD
A
A0
A1
A2
GND
32 Kbit EEPROM ARRAY
8bit
12bit
12bit
DATA
REGISTER
SLAVE WORD
ADDRESS REGISTER
ADDRESS
DECODER
START STOP
CONTROL LOGIC
VCC LEVEL DETECT
HIGH VOLTAGE GEN.
ACK
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OE1
A1
Y1
OE2
A2
Y2
Vss
Vcc
OE4
A4
Y4
OE3
A3
Y3
HD74HC126