參數(shù)資料
型號: DS1689SN
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: Timer or RTC
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO28
封裝: 0.330 INCH, SOIC-28
文件頁數(shù): 21/36頁
文件大?。?/td> 594K
代理商: DS1689SN
DS1689/DS1693
28 of 36
RTC AC TIMING CHARACTERISTICS—3V
(Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX UNITS NOTES
Cycle Time
tCYC
915
DC
ns
Pulse Width,
RD/WR Low
PWRWL
375
ns
Pulse Width,
RD/WR High
PWRWH
450
ns
Input Rise and Fall Time
tR, tF
30
ns
Chip-Select Setup Time Before
WR or RD
tCS
75
ns
Chip-Select Hold Time
tCH
0
ns
Read-Data Hold Time
tDHR
10
120
ns
Write-Data Hold Time
tDHW
0
ns
Muxed Address Valid Time to ALE Fall
tASL
90
ns
Muxed Address Hold Time from ALE Fall
tAHL
30
ns
RD or WR High Setup to ALE Rise
tASD
30
ns
Pulse Width, ALE High
PWASH
180
ns
ALE Low Setup to
RD or WR Fall
tASED
120
ns
Output Data Delay Time from
RD
tDDR
20
370
ns
9
Data Setup Time
tDSW
180
ns
IRQ Release from RD
tIRD
2
s
CEI to CEO Delay
tCED
20
ns
DS1689/DS1693 BUS TIMING FOR READ CYCLE TO RTC
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DS1689S 1 TIMER(S), REAL TIME CLOCK, PDSO28
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