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M48T86 Fiches technique(PDF) 13 Page - STMicroelectronics

No de pièce M48T86
Description  5.0 V PC real-time clock
PDF  36 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T86 Fiches technique(HTML) 13 Page - STMicroelectronics

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M48T86
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Table 2.
AC characteristics
Symbol
Parameter(1)
1.
Valid for ambient operating temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5V (except where noted).
M48T86
Unit
Min
Typ
Max
tCYC
Cycle time
160
ns
tDSL
Pulse width, data strobe low or R/W high
80
ns
tDSH
Pulse width, data strobe high or R/W low
55
ns
tRWH
R/W hold time
0
ns
tRWS
R/W setup time
10
ns
tCS
Chip select setup time
5
ns
tCH
Chip select hold time
0
ns
tDHR
READ data hold time
0
25
ns
tDHW
WRITE data hold time
0
ns
tAS
Address setup time
20
ns
tAH
Address hold time
5
ns
tDAS
Delay time, data strobe to address strobe
rise
10
ns
tASW
Pulse width address strobe high
30
ns
tASD
Delay time, address strobe to data strobe
rise
35
ns
tOD
Output data delay time from data strobe
rise
50
ns
tDW
WRITE setup time
30
ns
tBUC
Delay time before update cycle
244
µs
tPI
(2)
2.
See Table 4 on page 18.
Periodic interrupt time interval
–
–
–
tUC
Time of update cycle
1
µs



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