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BU9880GUL-WE2 Datasheet(PDF) 8 Page - Rohm

No. de pieza BU9880GUL-WE2
Descripción Electrónicos  WL-CSP EEPROM family I2C BUS
Download  17 Pages
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Fabricante Electrónico  ROHM [Rohm]
Página de inicio  http://www.rohm.com
Logo ROHM - Rohm

BU9880GUL-WE2 Datasheet(HTML) 8 Page - Rohm

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Technical Note
8/16
BU9880GUL-W
www.rohm.com
2010.11 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
Write Command
Write cycle
Arbitrary data is written to EEPROM. When to write only 1 byte, byte write 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.
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 32 bytes.
(Refer to "Internal address increment of "Notes on page write cycle" in P9/16.)
As for page write cycle of BU9880GUL-W , after the significant 7 bits of word address, are 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.
0
0
1
1
0
0
W
R
I
T
E
S
T
A
R
T
R
/
W
S
T
O
P
1st WORD
ADDRESS
DATA
SLAVE
ADDRESS
0
D0
A
C
K
SDA
LINE
A
C
K
A
C
K
WA
12
WA
0
A
C
K
2nd WORD
ADDRESS
D7
Fig.33 Byte write cycle
Fig.34 Page write cycle
W
R
I
T
E
S
T
A
R
T
R
/
W
A
C
K
S
T
O
P
1st WORD
ADDRESS(n)
SDA
LINE
A
C
K
A
C
K
DATA(n+31)
A
C
K
SLAVE
ADDRESS
1 0
0
10
D0
DATA(n)
D0
D7
A
C
K
2nd WORD
ADDRESS(n)
WA
0
WA
12
0 0
* *


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