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M41T66 Datasheet(PDF) 27 Page - STMicroelectronics

Part # M41T66
Description  Serial access real-time clock with alarms
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T66 Datasheet(HTML) 27 Page - STMicroelectronics

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M41T66
DC and AC parameters
27/33
Table 13.
AC characteristics
Sym
Parameter(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 1.5 to 4.4 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



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