BR24L32-W/F-W/FJ-W/FV-W
BR24L64-W/F-W
Features
• 32k bit serial EEPROM organized as 4k
×
8bit (BR24L32)
64k bit serial EEPROM organized as 8k
×
8bit (BR24L64)
• 2 wire bus serial interface (2 byte Address)
• Low operating voltage range (2V operating)
Read : 1.8~5.5V
Write : 1.8~5.5V
• Low current consumption
Active : 3mA MAX
Standby : 2µA MAX
• Clock frequency : 100kHz MAX (1.8~5.5V)
400kHz MAX (2.5~5.5V)
• Write cycle time : 5ms MAX
• Address auto-increment function during read operation
• Automatic erase-before-write function during write operation
• Page write function : 32byte
• Inadvertent write protection function
Inadvertent write protection at low voltage (Vcc Lock-out function)
WP (Write Protect) function
• Schmitt trigger circuit and noise filter are built into SCL and
SDA pins
• 1,000,000 write cycle typical
• 40 years data retention
• Operating temperature range : -40~85˚C
*
Pin Configurations
A0 1
A1 2
A2 3
GND 4
8 Vcc
7 WP
6 SCL
5 SDA
*
DIP8/SOP8/SOP-J8/SSOP-B8
DIP8/SOP8 (Only BR24L64)
Pin Functions
Pin Names
A0, A1, A2
GND
SDA
SCL
WP
Vcc
Ground
Serial Data Input/Output
Serial Data Clock
Write Protect
Power Supply
Functions
Slave Address Inputs
*
Under development
Block Diagram
32~64k bit EEPROM Array
A0
A1
A2
12bit:
BR24L32
13bit:
BR24L64
8bit
12bit:
BR24L32
13bit:
BR24L64
WP
SCL
SDA
Address
Decoder
Slave Words
Address Register
STOP
Data
Register
START
Control Logic
ACK
High Voltage
Generation
Voltage Detection
9
.
1.8V
L
opeow vo
ratin ltag
e
g
1,
Wri 0 0 0 , 0 0
te c 0
ycle
Serial 2 Wire Interface (I
2
C BUS Type)
Timing chart
Byte write cycle
S
T
A
R
T
SLAVE
ADDRESS
1 0 1
0 A
2
A
1
A
0
R A
/ C
W K
W
R
I
T
E
1st WORD
ADDRESS
2nd WORD
ADDRESS
WA
0
DATA
D
7
A
C
K
D
0
A
C
K
S
T
O
P
SDA
LINE
∗ ∗ ∗
*
1
WA
12
A
C
K
Page write cycle
S
T
A
R
T
SLAVE
ADDRESS
1 0 1
0 A
2
A
1
A
0
R A
/ C
W K
W
R
I
T
E
1st WORD
ADDRESS(n)
2nd WORD
ADDRESS(n)
WA
0
DATA(n)
D
7
A
C
K
D
0
A
C
K
DATA(n+31)
D
0
A
C
K
S
T
O
P
SDA
LINE
∗ ∗ ∗
WA
12
*
1
A
C
K
Current read cycle
S
T
A
R
T
SLAVE
ADDRESS
1 0 1
0 A
2
A
1
A
0
R A
/ C
W K
R
E
A
D
D
7
S
T
O
P
D
0
A
C
K
DATA
SDA
LINE
Random read cycle
S
T
A
R
T
SLAVE
ADDRESS
1
0 1 0 A
2
A
1
A
0
R A
/ C
W K
W
R
I
T
E
1st WORD
ADDRESS(n)
2nd WORD
ADDRESS(n)
WA
0
S
T
A
R
T
1
A
C
K
SLAVE
ADDRESS
0 1
0
A
2
A
1
A
0
R
E
A
D
DATA(n)
S
T
O
P
SDA
LINE
∗ ∗ ∗
WA
12
*
1
D
7
R A
/ C
W K
D
0
A
C
K
A
C
K
Sequential read cycle
S
T
A
R
T
SLAVE
ADDRESS
1
0 1 0 A
2
A
1
A
0
R A
/ C
W K
R
E
A
D
S
T
O
P
DATA(n)
DATA(n+x)
SDA
LINE
D
7
D
0
A
C
K
A
C
K
D
7
D
0
A
C
K
*1: WA
12
…Don't Care (BR24L32)
Note : BR24C32/F has no letter "-W", but it is a double-cell type.
BR24C64/F is a single-cell type.
Please be careful not to confuse w-cell type and single-cell type. ("-W" means double-cell type.)
10
Microcontroller MCU
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