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BU9844GUL-WE2 датащи(PDF) 3 Page - Rohm

номер детали BU9844GUL-WE2
подробное описание детали  WL-CSP EEPROM family I2C BUS
Download  19 Pages
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производитель  ROHM [Rohm]
домашняя страница  http://www.rohm.com
Logo ROHM - Rohm

BU9844GUL-WE2 датащи(HTML) 3 Page - Rohm

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Technical Note
3/18
BU9844GUL-W
www.rohm.com
2010.09 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
Action timing characteristics
(Unless otherwise specified, Ta=-40~+85℃, Vcc=1.7~5.5V)
Parameter
Symbol
FAST-MODE
2.5V≦Vcc≦5.5V
STANDARD-MODE
1.7V≦Vcc≦5.5V
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
SCL frequency
fSCL
-
-
400
-
-
100
kHz
Data clock “HIGH” time
tHIGH
0.6
-
-
4.0
-
-
μs
Data clock “LOW” time
tLOW
1.2
-
-
4.7
-
-
μs
SDA, SCL rise time *1
tR *1
-
-
0.3
-
-
1.0
μs
SDA< SCL fall time *1
tF *1
-
-
0.3
-
-
0.3
μs
Start condition hold time
tHD:STA
0.6
-
-
4.0
-
-
μs
Start condition setup time
tSU:STA
0.6
-
-
4.7
-
-
μs
Input data hold time
tHD:DAT
0
-
-
0
-
-
ns
Input data setup time
tSU:DAT
100
-
-
250
-
-
ns
Output data delay time
tPD
0.1
-
0.9
0.2
-
3.5
μs
Output data hold time
tDH
0.1
-
-
0.2
-
-
μs
Stop condition setup time
tSU:STO
0.6
-
-
4.7
-
-
μs
Bus release time before transfer start
tBUF
1.2
-
-
4.7
-
-
μs
Internal write cycle time
tWR
-
-
5
-
-
5
ms
Noise removal valid period (SDA, SCL terminal)
tI
-
-
0.1
-
-
0.1
μs
WP hold time
tHD:WP
0
-
-
0
-
-
ns
WP setup time
tSU:WP
0.1
-
-
0.1
-
-
μs
WP valid time
tHIGH:WP
1.0
-
-
1.0
-
-
μs
*1 Not 100% tested.
Sync data input / output timing
SCL
SDA
WP
tHD:WP
stop condition
tWR
D1
D0
ACK
ACK
DATA(1)
DATA(n)
tSU:WP
Input read at the rise edge of SCL
Data output in sync with the fall of SCL
Fig.-1(a) Sync data input / output timing
Fig.1-(b) Start – stop bit timing
fig.1-(d) WP timing at write execution
Fig.1-(e) WP timing at write cancel
At write execution, in the area from the DO 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.
Fig.1-(c) Write cycle timing
SDA
(Input)
SCL
SDA
(Output)
tHD:STA
tHD:DAT
tSU:DAT
tBUF
tPD
tDH
tLOW
tHIGH
tR
tF
SDA
D0
ACK
tWR
SCL
Write data
(n-th address)
Stop condition
Start condition
tHIGH:WP
WP
SDA
D1
D0
ACK
ACK
DATA(1)
DATA(n)
tWR
SCL
SDA
tSU:STA
tSU:STO
tHD:STA
START BIT
STOP BIT
SCL


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