BR24G32-3A ROHM [Rohm], BR24G32-3A Datasheet - Page 15

• Manufacturer Part Number: BR24G32-3A
• Description: High Reliability Serial EEPROMs I2C BUS BR24xxxxfamily
• Manufacturer: ROHM [Rohm]

●Write Command
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BR24G32-3A
TSZ22111・15・001
○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.
・During internal write execution, all input commands are ignored, therefore ACK is not sent back.
・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 :
・As for page write cycle of BR24G32-3A, after the significant 7 bits of word address is designated arbitrarily, by
continuing data input of 2 bytes or more, the address of insignificant 5 bits is incremented internally, and data up to 32
bytes can be written.
SDA
LINE
SDA
LINE
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 P16.)
S
A
R
T
T
R
S
T
A
T
1
0
1
0
ADDRESS
1
0
SLAVE
0
0
1
ADDRESS
A2
SLAVE
0
A1
A2
A0
A1
W
W
R
T
E
R
I
/
C
A
K
A0
WA
15
W
W
R
R
T
E
/
WA
I
ADDRESS(n)
14
1st WORD
WA
A
C
K
13
*1
WA
WA
12
15
WA
WA
11
14
1st WORD
ADDRESS
WA
13
WA
12
*1
WA
11
A
C
K
Fig.36
Fig.37
ADDRESS(n)
2nd WORD
A
C
K
Byte write cycle
Page write cycle
WA
0
2nd WORD
ADDRESS
A
C
K
D7
DATA(n)
15/34
WA
0
A
C
K
D0
D7
A
C
K
DATA
DATA(n+31)
Up to 32Byte
D0
D0
A
C
K
C
A
K
S
O
P
T
O
S
T
P
*1 WA12 to WA15 become don't care.
*1 WA12 to WA15 become don't care.
TSZ02201-0R2R0G100050 -1-2
15.May.2012 REV.001
Datasheet
Datasheet