Datasheet
Serial EEPROM Series Industrial EEPROM
105℃ Operation I
2
C BUS EEPROM (2-Wire)
BR24AxxF-WLB
(1K 2K 4K 8K 16K 32K 64K)
General Description
This is the product guarantees long time support in Industrial market.
BR24AxxF-WLB is a serial EEPROM of I
2
C BUS interface method.
Features
Long Time Support Product for Industrial Applications.
Completely conforming to the world standard I
2
C BUS.
All controls available by 2 ports of serial clock
(SCL) and serial data (SDA)
Wide temperature range -40℃ to +105℃
Other devices than EEPROM can be connected to
the same port, saving microcontroller port
2.5V to 5.5V single power source operation most
suitable for battery use
Page write mode useful for initial value write at
factory shipment
Auto erase and auto end function at data rewrite
Low current consumption
At write operation (5V)
: 1.2mA (Typ.)
*1
At read operation (5V)
: 0.2mA (Typ.)
At standby condition (5V) : 0.1μA (Typ.)
Write mistake prevention function
Write (write protect) function added
Write mistake prevention function at low voltage
Data rewrite up to 1,000,000 times(Ta≦25℃）
Data kept for 40 years(Ta≦25℃）
Noise filter built in SCL / SDA terminal
Shipment data all address FFh
*1 BR24A32F-WLB, BR24A64F-WLB : 1.5mA
Package
W(Typ.) x D(Typ.) x H(Max.)
SOP8
5.00mm x 6.20mm x 1.71mm
Application
Industrial Equipment
Page write
Number of Pages
Product
number
8Byte
BR24A01AF-WLB
BR24A02F-WLB
16Byte
BR24A04F-WLB
BR24A08F-WLB
BR24A16F-WLB
32Byte
BR24A32F-WLB
BR24A64F-WLB
BR24AxxF-WLB
Capacity
1Kbit
2Kbit
4Kbit
8Kbit
16Kbit
32Kbit
64Kbit
Bit format
128×8
256×8
512×8
1K×8
2K×8
4K×8
8K×8
Type
BR24A01AF-WLB
BR24A02F-WLB
BR24A04F-WLB
BR24A08F-WLB
BR24A16F-WLB
BR24A32F-WLB
BR24A64F-WLB
Power source voltage
2.5V to 5.5V
2.5V to 5.5V
2.5V to 5.5V
2.5V to 5.5V
2.5V to 5.5V
2.5V to 5.5V
2.5V to 5.5V
Package
SOP8
○Product
structure: Silicon monolithic integrated circuit
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©2013 ROHM Co., Ltd. All rights reserved.
TSZ22111½14½001
○This
product has no designed protection against radioactive rays
1/26
TSZ02201-0R1R0G100240-1-2
29.Jan.2018 Rev.003
BR24AxxF-WLB (1K 2K 4K 8K 16K 32K 64K)
Absolute Maximum Ratings
(Ta=25℃)
Parameter
Supply Voltage
Power Dissipation
Storage Temperature
Operating Temperature
Terminal Voltage
Symbol
V
CC
Pd
Tstg
Topr
‐
Ratings
-0.3 to +6.5
0.45
-65 to +125
-40 to +105
-0.3 to V
CC
+1.0
Unit
V
W
℃
℃
V
When using at Ta=25℃ or higher 4.5mW to be reduced per 1℃.
Remarks
Memory cell characteristics
(V
CC
=2.5V to 5.5V)
Parameter
Number of data rewrite times
*1
Data hold years
*1
○Shipment
data all address FFh
*1Not 100% TESTED
Min.
1,000,000
100,000
40
10
Limits
Typ.
-
-
-
-
Max
-
-
-
-
Unit
Times
Years
Conditions
Ta≦25℃
Ta≦105℃
Ta≦25℃
Ta≦105℃
Recommended Operating Ratings
Parameter
Power source voltage
Input voltage
Symbol
V
CC
V
IN
Ratings
2.5 to 5.5
0 to V
CC
Unit
V
Electrical characteristics
(Unless otherwise specified, Ta=-40℃ to +105℃, V
CC
=2.5V to 5.5V)
Parameter
“HIGH” input voltage
“LOW” input voltage
“LOW” output voltage 1
Input leak current
Output leak current
Current consumption
I
CC2
Standby current
I
SB
-
-
-
-
Symbol
V
IH
V
IL
V
OL
I
LI
I
LO
I
CC1
Min.
0.7 V
CC
-
-
-1
-1
-
Limits
Typ.
-
-
-
-
-
-
Max.
-
0.3 V
CC
0.4
1
1
2.0
*1
3.0
*2
0.5
2.0
Unit
V
V
V
μA
μA
mA
mA
μA
Conditions
I
OL
=3.0mA (SDA)
V
IN
=0V to V
CC
V
OUT
=0V to V
CC
, (SDA)
V
CC
=5.5V,f
SCL
=400kHz, t
WR
=5ms,
Byte write, Page write
V
CC
=5.5V,f
SCL
=400kHz
Random read, current read, sequential read
V
CC
=5.5V, SDA・SCL= V
CC
A0, A1, A2=GND, WP=GND
*1 BR24A01AF/02F/04F/08F/16F-WLB, *2 BR24A32F/64F-WLB
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© 2013 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0R1R0G100240-1-2
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BR24AxxF-WLB (1K 2K 4K 8K 16K 32K 64K)
Operating timing characteristics
(Unless otherwise specified, Ta=
-
40℃ to +105℃, V
CC
=2.5V to 5.5V)
Parameter
Symbol
FAST-MODE
2.5V≦V
CC
≦5.5V
Min.
Typ.
Max.
-
-
400
0.6
-
-
1.2
-
-
-
-
0.3
-
-
0.3
0.6
-
-
0.6
-
-
0
-
-
100
-
-
0.1
-
0.9
0.1
-
-
0.6
-
-
1.2
-
-
-
-
5
-
-
0.1
0
-
-
0.1
-
-
1.0
-
-
STANDARD-MODE
2.5V≦V
CC
≦5.5V
Min.
Typ.
Max.
-
-
100
4.0
-
-
4.7
-
-
-
-
1.0
-
-
0.3
4.0
-
-
4.7
-
-
0
-
-
250
-
-
0.2
-
3.5
0.2
-
-
4.7
-
-
4.7
-
-
-
-
5
-
-
0.1
0
-
-
0.1
-
-
1.0
-
-
Unit
kHz
μs
μs
μs
μs
μs
μs
ns
ns
μs
μs
μs
μs
ms
μs
ns
μs
μs
SCL frequency
f
SCL
Data clock “HIGH“ time
t
HIGH
Data clock “LOW“ time
t
LOW
*1
SDA, SCL rise time
t
R
*1
SDA, SCL fall time
tF
Start condition hold time
t
HD:STA
Start condition setup time
t
SU:STA
Input data hold time
t
HD:DAT
Input data setup time
t
SU:DAT
Output data delay time
t
PD
Output data hold time
t
DH
Stop condition setup time
t
SU:STO
Bus release time before transfer start
tB
UF
Internal write cycle time
t
WR
Noise removal valid period (SDA, SCL terminal)
tI
WP hold time
t
HD:WP
WP setup time
t
SU:WP
WP valid time
t
HIGH:WP
*1 Not 100% tested
FAST-MODE and STANDARD-MODE
FAST-MODE and STANDARD-MODE are of same operations, and mode is changed. They are distinguished by operating
speeds. 100kHz operation is called STANDARD-MODE, and 400kHz operation is called FAST-MODE. This operating
frequency is the maximum operating frequency, so 100kHz clock may be used in FAST-MODE. At V
CC
=2.5V to 5.5V,
400kHz, namely, operation is made in FASTMODE. (Operation is made also in STANDARD-MODE.)
Sync Data Input / Output Timing
tR
SCL
tF
tHIGH
SCL
tHD:STA
SDA
(入力)
(input)
tBUF
(output)
(出力)
tSU:DAT
tLOW
tHD:DAT
tSU:STA
tPD
tDH
tHD:STA
tSU:STO
SDA
SDA
START BIT
STOP BIT
○Input
read at the rise edge of SCL
○Data
output in sync with the fall of SCL
Figure 1-(a) Sync data input / output timing
SCL
Figure 1-(b) Start-stop bit timing
DATA(1)
SDA
D1
D0
ACK
DATA(n)
ACK
½WR
SCL
SDA
D0
Write data
ACK
½WR
Stop condition
Start condition
WP
Stop condition
ストップコンディション
(n-th
address)
tSU：WP
½HD：WP
Figure 1-(c) Write cycle timing
SCL
DATA(1)
SDA
D1
D0
ACK
tHIGH:WP
WP
DATA(n)
ACK
tWR
Figure 1-(d) WP timing at write execution
○At
write execution, in the area from the D0 taken clock rise of the first
DATA(1), to tWR, set WP=“LOW”.
○By
setting WP “HIGH” in the area, write can be cancelled.
When it is set WP=“HIGH” during tWR, write is forcibly ended, and data of
address under access is not guaranteed, therefore write it once again.
Figure 1-(e) WP timing at write cancel
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
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TSZ02201-0R1R0G100240-1-2
29.Jan.2018 Rev.003
BR24AxxF-WLB (1K 2K 4K 8K 16K 32K 64K)
Block Diagram
*2
A0
1
*1
1Kbit to 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
START
STOP
A2
3
Control circuit
ACK
6
SCL
GND
4
High voltage
generating circuit
Power source
voltage detection
5
SDA
*1
7bit : BR24A01AF-WLB
8bit : BR24A02F-WLB
9bit : BR24A04F-WLB
10bit : BR24A08F-WLB
11bit : BR24A16F-WLB
12bit : BR24A32F-WLB
13bit : BR24A64F-WLB
*
2
A0=N.C.
A0, A1=N.C.
A0, A1= N.C. A2=Don’t Use
: BR24A04F-WLB
: BR24A08F-WLB
: BR24A16F-WLB
Pin Configuration
(TOP VIEW)
A0
1
BR24A01AF-WLB
BR24A02F-WLB
BR24A04F-WLB
BR24A08F-WLB
BR24A16F-WLB
BR24A32F-WLB
BR24A64F-WLB
8
VCC
A1
2
7
WP
A2
3
6
SCL
GND
4
5
SDA
Pin Descriptions
Terminal
name
Input /
output
Function
BR24A01AF-WLB
BR24A02F-WLB
BR24A04F-WLB
BR24A08F-WLB
BR24A16F-WLB
BR24A32F-WLB
BR24A64F-WLB
A0
A1
A2
GND
SDA
SCL
WP
VCC
Input
Input
Input
-
Input /
output
Input
Input
-
Slave address setting
Slave address setting
Slave address setting
Not connected
Not connected
Not used
Slave address setting
Slave address setting
Slave address setting
Reference voltage of all input / output, 0V
Slave and word address, Serial data input serial data output
Serial clock input
Write protect terminal
Connect the power source.
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/26
TSZ02201-0R1R0G100240-1-2
29.Jan.2018 Rev.003
BR24AxxF-WLB (1K 2K 4K 8K 16K 32K 64K)
Typical Performance Curves
(The following values are Typ. ones.)
6
5
4
6
5
4
SPEC
3
2
1
SPEC
0
0
1
2
3
Vcc[V]
Figure 2. H input voltage VIH1,2
(SCL,SDA,WP)
4
5
6
0
1
2
3
4
5
6
Ta=105℃
Ta=-40℃
Ta=25℃
VIH[V]
2
1
0
Ta=105℃
Ta=-40℃
Ta=25℃
VIL[V]
3
Vcc[V]
Figure 3. L input voltageVIL1,2
(SCL,SDA,WP)
1
1.2
1.0
0.8
0.6
0.4
0.2
Ta=-40℃
0
0
1
2
3
IOL1[mA]
4
5
6
0
1
2
3
Vcc[V]
4
5
6
Ta=105℃
Ta=25℃
Ta=-40℃
SPEC
EC
0.8
0.6
VOL1[V]
SPEC Ta=105℃
0.4
Ta=25℃
0.2
0
Figure 4. L output voltage VOL1-IOL1
(V
CC
=2.5V)
ILI[μA]
Figure 5. Input leak current ILI
(SCL,WP)
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/26
TSZ02201-0R1R0G100240-1-2
29.Jan.2018 Rev.003
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