Datasheet

Technical Note
4/21
BR24T□□□-W Series
www.rohm.com
2011.1 - Rev.H
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram
●Pin assignment and description
●Characteristic data (The following values are Typ. ones.)
0
1
2
3
4
5
6
0123456
SUPPLY VOLTAGE : Vcc(V)
H INPUT VOLTAGE : V
IH
(V)
0
0.2
0.4
0.6
0.8
1
1.2
0123456
SUPPLYVOLTAGE : Vcc(V)
INPUT LEAK CURRENT : I
LI
(uA)
0
0.2
0.4
0.6
0.8
1
0123456
L OUTPUT CURRENT : I
OL
(mA)
L OUTPUT VOLTAGE : V
OL
(V)
0
0.2
0.4
0.6
0.8
1
1.2
0123456
SUPPLY VOLTAGE : Vcc(V)
OUTPUT LEAK CURRENT : I
LO
(uA)
0
0.1
0.2
0.3
0.4
0.5
0.6
0123456
L OUTPUT CURRENT : I
OL
(mA)
L OUTPUT VOLTAGE : V
OL
(V)
Fig.5 'L' output voltage V
OL
-I
OL
(Vcc=1.7V)
0
1
2
3
4
5
6
0123456
SUPPLY VOLTAGE : Vcc(V)
L INPUT VOLTAGE : V
IL
(V)
Fig.6 'L' output voltage V
OL
-I
OL
(Vcc=2.5V)
Fig.7 Input leak current I
LI
(A0,A,A2,SCL,WP)
Fig.8 Output leak current I
LO
(SDA)
Fig.4 'L' input voltage V
IL
(A0,A1,A2,SCL,SDA,WP)
Fig.3 'H' input voltage V
IH
(A0,A1,A2,SCL,SDA,WP)
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
SPEC
SPEC
SPEC
SPEC
SPEC
8
7
6
5 4
3
2
1
SDA
SCL
WP
Vcc
GND
A2
A1
A0
Address
decoder
Word
address register
Data
register
Control circuit
High voltage
generating circuit
P
ower source
voltage detection
8bit
ACK
START STOP
1Kbit～1024Kbit EEPROM array
*1
*1
*2
*2
*2
13bit
14bit
15bit
16bit
17bit
7bit
8bit
9bit
10bit
11b it
12bit
Fig.2 Block diagram
＊
1 7bit: BR24T01-W
8bit: BR24T02-W
9bit: BR24T04-W
10bit: BR24T08-W
11bit: BR24T16-W
Vcc
SCL
GND
BR24T01-W
BR24T02-W
BR24T04-W
BR24T08-W
BR24T16-W
BR24T32-W
BR24T64-W
BR24T128-W
BR24T256-W
BR24T512-W
BR24T1M-W
1
2
3
4 5
6
7
8
WP
SDA
A2
A1
A0
Terminal
Name
Input/
Output
BR24T01-W BR24T02-W BR24T04-W BR24T08-W BR24T16-W BR24T32/64/128/256/512-W BR24T1M-W
A0 Input
Slave address setting No connected Don’t use
Slave address setting Don’t use
A1 Input Slave address setting
Don’t use
Slave address setting
A2 Input
Slave address setting No connected
Slave address setting
GND
－
Reference voltage of all input / output, 0V
SDA
Input/
output
Slave and word address, Serial data input serial data output
SCL Input Serial clock input
WP Input Write protect terminal
Vcc
－
Connect the power source.
12bit: BR24T32-W
13bit: BR24T64-W
14bit: BR24T128-W
15bit: BR24T256-W
16bit: BR24T512-W
17bit: BR24T1M-W
*2 A0=None connect : BR24T04-W
A0=None connect,A1=Don't use : BR24T08-W
A0, A1=Don't use,A2=None connect : BR24T16-W
A0=Don’t use : BR24T1M-W