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DS1689S/T&R датащи(PDF) 27 Page - Maxim Integrated Products

номер детали DS1689S/T&R
подробное описание детали  3V/5V Serialized Real-Time Clocks with NV RAM Control
PDF  36 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1689S/T&R датащи(HTML) 27 Page - Maxim Integrated Products

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DS1689/DS1693
27 of 36
RTC AC TIMING CHARACTERISTICS—5V
(Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX UNITS NOTES
Cycle Time
tCYC
305
DC
ns
Pulse Width,
RD/WR Low
PWRWL
125
ns
Pulse Width,
RD/WR High
PWRWH
150
ns
Input Rise and Fall Time
tR, tF
30
ns
Chip-Select Setup Time Before
WR or RD
tCS
20
ns
Chip-Select Hold Time
tCH
0
ns
Read-Data Hold Time
tDHR
10
80
ns
Write-Data Hold Time
tDHW
0
ns
Muxed Address Valid Time to ALE Fall
tASL
30
ns
Muxed Address Hold Time from ALE Fall
tAHL
10
ns
RD or WR High Setup to ALE Rise
tASD
25
ns
Pulse Width, ALE High
PWASH
60
ns
ALE Low Setup to
RD or WR Fall
tASED
40
ns
Output Data Delay Time from
RD
tDDR
20
120
ns
9
Data Setup Time
tDSW
100
ns
IRQ Release from RD
tIRD
2
µs
CEI to CEO Delay
tCED
10
ns
DS1689/DS1693 BUS TIMING FOR WRITE CYCLE TO RTC AND RTC
REGISTERS



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