BR24C21xxx Series (1K)
●Block Diagram
Datasheet
N.C. 1
N.C. 2
N.C. 3
GND 4
1 Kbit EEPROM ARRAY
7bit
ADDRESS
SLAVE・WORD
DECODER 7bit ADDRESS REGISTER
8bit
DATA
REGISTER
START
STOP
CONTROL LOGIC
ACK
HIGH VOLTAGE
VCC LEVEL DETECT
8 VCC
7 VCLK
6 SCL
5 SDA
●Pin Configuration
●Pin Descriptions
(TOP VIEW)
VCC VCLK SCL SDA
BR24C21
BR24C21F
BR24C21FJ
BR24C21FV
N.C. N.C. N.C. GND
Pin Name
I/O
Functions
VCC
-
Power Supply
GND
-
Ground (0V)
N.C.
-
No Connection
SCL
IN
Serial Clock Input for Bi-directional Mode
SDA
IN/OUT
Slave and Word Address,
Serial Data Input, Serial Data Output *1
VCLK
IN
Clock Input (Transmit-Only Mode)
Write Enable (Bi-directional Mode)
*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