參數(shù)資料
型號: DS1693
廠商: DALLAS SEMICONDUCTOR
元件分類: Timer or RTC
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDMA28
封裝: 0.740 INCH, MODULE, DIP-28
文件頁數(shù): 18/32頁
文件大?。?/td> 381K
代理商: DS1693
DS1689/DS1693
25 of 32
DS1689/DS1693 BUS TIMING FOR READ CYCLE TO RTC
RTC AC TIMING CHARACTERISTICS
Over the operating range (5V)
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
0ns
Read Data Hold Time
tDHR
10
80
ns
Write Data Hold Time
tDHW
0ns
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
s
CEI
to CEO Delay
tCED
10
ns
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