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M41T82 датащи(PDF) 51 Page - STMicroelectronics

номер детали M41T82
подробное описание детали  Serial I2C bus RTC with battery switchover
PDF  61 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T82 датащи(HTML) 51 Page - STMicroelectronics

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M41T82-M41T83
DC and AC parameters
Doc ID 12578 Rev 12
51/61
Figure 27.
Bus timing requirement sequence
Table 26.
AC characteristics
Sym
Parameter(1)
1.
Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 2.38 to 5.5 V (except where noted).
Min
Typ
Max
Units
fSCL
SCL clock frequency
0
400
kHz
tLOW
Clock low period
1.3
µs
tHIGH
Clock high period
600
ns
tR
SDA and SCL rise time
300
ns
tF
SDA and SCL fall time
300
ns
tHD:STA
START condition hold time
(after this period the first clock pulse is generated)
600
ns
tSU:STA
START condition setup time
(only relevant for a repeated start condition)
600
ns
tSU:DAT
(2)
2.
Transmitter must internally provide a hold time to bridge the undefined region (300 ns max) of the falling
edge of SCL.
Data setup time
100
ns
tHD:DAT
Data hold time
0
µs
tSU:STO
STOP condition setup time
600
ns
tBUF
Time the bus must be free before a new transmission
can start
1.3
µs
AI00589
SDA
P
tSU:STO
tSU:STA
tHD:STA
SR
SCL
tSU:DAT
tF
tHD:DAT
tR
tHIGH
tLOW
tHD:STA
tBUF
S
P



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