BR24C21xxx Series (1K)
● Block Diagram
Datasheet
N.C. 1
1 Kbit
EEPROM
ARRAY
8
V CC
7bit
8bit
ADDRESS
SLAVE ? WORD
DATA
N.C. 2
DECODER
7bit
ADDRESS REGISTER
REGISTER
7
VCLK
START
STOP
N.C. 3
CONTROL LOGIC
6
SCL
ACK
GND 4
HIGH VOLTAGE
V CC LEVEL DETECT
5
SDA
● Pin Configuration
(TOP VIEW)
V CC
VCLK
SCL
SDA
BR24C21
BR24C21F
BR24C21FJ
BR24C21FV
N.C.
N.C.
N.C.
GND
● Pin Descriptions
Pin Name
V CC
GND
N.C.
SCL
I/O
-
-
-
IN
Functions
Power Supply
Ground (0V)
No Connection
Serial Clock Input for Bi-directional Mode
SDA
VCLK
IN/OUT
IN
Slave and Word Address,
Serial Data Input, Serial Data Output
Clock Input (Transmit-Only Mode)
Write Enable (Bi-directional Mode)
*1
*1 An open drain output requires a pull-up resistor.
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TSZ22111 ? 15 ? 001
3/18
TSZ02201-0R2R0G100270-1-2
10.Jul.2012 Rev.001
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