BR24L□□-W Series,BR24S□□□-W Series
●Block
diagram
Technical Note
*2
A0
1
*1
1Kbit~64Kbit EEPROM array
7bit 11bit
8bit 12bit
9bit 13b
it
10bi
t
8
8bit
Vcc
*2
A1
2
Address
decoder
*1
7bit 11bit
8bit 12bit
9bit 13b
it
10bi
t
Slave - word
address register
Data
register
7
WP
*2
A2
3
START
STOP
Control circuit
ACK
6
SCL
GND
4
＊
High voltage
generating circuit
1
7bit : BR24L01A-W 10bit : BR24L08-W
8bit : BR24L02-W
11bit : BR24L16-W
9bit : BR24L04-W
12bit : BR24L32-W
13bit : BR24L64-W
Power source
voltage detection
＊
5
: BR24L04-W
: BR24L08-W
: BR24L16-W
SDA
2
A0=N.C.
A0, A1=N.C.
A0, A1= N.C. A2=Don’t Use
Fig.2 Block diagram
●Pin
assignment and description
A0
A1
A2
GND
1
2
3
4
1
1
1
1
8
BR24L01A-W
BR24L02-W
BR24L04-W
BR24L08-W
BR24L16-W
BR24L32-W
BR24L64-W
7
1
1
1
1
Vcc
WP
SCL
SDA
6
5
Terminal
name
A0
A1
A2
GND
SDA
SCL
WP
Vcc
Input /
output
Input
Input
Input
-
Input /
output
Input
Input
-
Function
BR24L01A-W
BR24L02-W
BR24L04-W
BR24L08-W
BR24L16-W
BR24L32-W
BR24L64-W
Slave address setting
Not connected
Slave address setting
Not connected
Slave address setting
Not used
Reference voltage of all input / output, 0V
Slave address setting
Slave address setting
Slave address setting
Slave and word address, Serial data input serial data output
Serial clock input
Write protect terminal
Connect the power source.
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2009.09 - Rev.D
ROHM [ ROHM ]
