BR24L16F-WE2 Rohm Semiconductor, BR24L16F-WE2 Datasheet - Page 8

• Manufacturer Part Number: BR24L16F-WE2
• Description: IC EEPROM 16KBIT 400KHZ 8SOP
• Manufacturer: Rohm Semiconductor

Specifications of BR24L16F-WE2

• Memory Size: 16K (2K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOP
• Clock Frequency: 400kHz
• Supply Voltage Range: 1.8V To 5.5V
• Memory Case Style: SOP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (18-Jun-2010)
• Package /: RoHS Compliant
• Memory Configuration: 2K X 8
• Interface Type: I2C, Serial
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: BR24L16F-WE2TR

●Write Command
○Write cycle
・Arbitrary data is written to EEPROM. When to write only 1 byte, byte write is normally used, and when to write continuous data of 2 bytes or
more, simultaneous write is possible by page write cycle. The maximum number of write bytes is specified per device of each capacity. Up to
32 arbitrary bytes can be written. (In the case of BR24L32 / L64-W)
・Data is written to the address designated by word address (n-th address)
・By issuing stop bit after 8bit data input, write to memory cell inside starts.
・When internal write is started, command is not accepted for tWR (5ms at maximum).
・By page write cycle, the following can be written in bulk : Up to 8 bytes ( BR24L01A-W, BR24L02-W）
・As for page write cycle of BR24L01A-W and BR24L02-W, after the significant 5 bits (4 significant bits in BR24L01-W) of word address are
・As for page write cycle of BR24L32-W and BR24L64-W, after the significant 7 bits (in the case of BR24L32-W) of word address, or the
SDA
LINE
S D A
L IN E
SDA
LINE
S D A
L IN E
And when data of the maximum bytes or higher is sent, data from the first byte is overwritten.
(Refer to "Internal address increment" of "Notes on page write cycle" in P9/32.)
designated arbitrarily, and as for page write command of BR24L04-W, BR24L08-W, and BR24L16-W, after page select bit (PS) of slave
address is designated arbitrarily, by continuing data input of 2 bytes or more, the address of insignificant 4 bits (insignificant 3 bit in
BR24L01A-W, and BR24L02-W) is incremented internally, and data up to 16 bytes (up to 8 bytes in BR24L01A-W and BR24L02-W) can
be written.
significant 8 bits (in the case of BR24L64-W) of word address are designated arbitrarily, by continuing data input of 2 byte or more, the
address of insignificant 5 bits is incremented internally, and data up to 32 bytes can be written.
Note)
Fig.38 Page write cycle (BR24L01A/02/04/08/16-W)
Fig.39 Page write cycle (BR24L32/64-W)
Fig.36 Byte write cycle (BR24L01A/02/04/08/16-W)
Fig.37 Byte write cycle (BR24L32/64-W)
S
A
R
T
T
S
A
R
T
T
S
T
A
R
T
Fig.40 Difference of slave address of each type
R
S
T
A
T
1 0
1
1
1 0
A D D R E S S
0
0
1
S L A V E
A D D R E S S
1
0
ADDRESS
1
1
N o te )
ADDRESS
S L A V E
N ote )
A 2
1 0
SLAVE
SLAVE
0
0
0
Note)
Note)
A 1
A2
A2
A 2
A 0
A1
A 1
A1
W
W
R
E
R
T
I
/
1
A0
A 0
A0
C
A
K
W
R
W
W
W
R
/
R
R
*
T
E
W
I
R
T
E
/
/
I
W
0
R
T
E
I
A D D R E S S (n )
*
C
A
C
K
A
K
C
A
K
1 st W O R D
*1 *2 *3
*
A 2
W A
WA
*1
*1
W A
1 2
*1
*
7
7
W A
11
*
A 1
1st WORD
ADDRESS
A D D R E S S (n )
*
A 0
ADDRESS
WA
W O R D
12
WORD
*1
WA
11
A
C
K
W A
A D D R E S S (n )
WA
0
2 n d W O R D
0
C
A
K
A
C
K
A
C
K
D 7
D7
D A TA (n )
W A
0
2nd WORD
ADDRESS
A
C
K
DATA
D 7
D A T A (n )
D 0
: Up to 16bytes (BR24L04-W, BR24L08-W、BR24L16-W）
: Up to 32bytes (BR24L32-W, BR24L64-W）
D0
WA
0
A
C
K
*1 In BR24L16-W, A2 becomes P2.
*2 In BR24L08-W, BR24L16-W, A1 becomes P1.
*3 In BR24L04-W, A0 becomes PS, and in BR24L08-W
A
C
K
A
C
K
D 0
O
S
T
P
D7
8/32
and BR24L16-W, A0 becomes P0.
D A TA (n +1 5 )
A
C
K
DATA
D A TA (n + 3 1 )
D 0
*2
A
C
K
D0
D 0
S
O
P
T
C
A
K
A
C
K
O
S
T
P
S
T
O
P
*1 As for WA7, BR24L01A-W becomes Don’t care.
*2 As for BR24L01A/02-W becomes (n+7).
*1 As for WA7, BR24L01A-W becomes Don’t care.
*1 As for WA12, BR24L32-W becomes Don’t care.
*1 As for WA12, BR24L32-W becomes Don’t care.