參數(shù)資料
型號(hào): DS1685E-3
廠商: DALLAS SEMICONDUCTOR
元件分類(lèi): Timer or RTC
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO24
封裝: TSOP-24
文件頁(yè)數(shù): 21/39頁(yè)
文件大小: 290K
代理商: DS1685E-3
DS1685/DS1687
28 of 39
RTC AC TIMING CHARACTERISTICS
(0
°C to 70°C; V
CC=5.0V ± 10%)
(-40
°C to 85°C; V
CC=5.0V ± 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Cycle Time
tCYC
195
DC
ns
Pulse Width, RD / WR Low
PWRWL
75
ns
Pulse Width, RD / WR High
PWRWH
75
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
50
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
15
ns
RD
or WR High Setup to
ALE Rise
tASD
25
ns
Pulse Width ALE High
PWASH
40
ns
ALE Low Setup to RD or
WR
Fall
tASED
30
ns
Output Data Delay Time
from RD
tDDR
20
60
ns
7
Data Setup Time
tDSW
60
ns
IRQ
Release from RD
tIRD
2
s
AC TEST CONDITIONS
Out put Load: 50 pF
Input Pulse Levels: 0-3.0V
Timing Measurement Reference Levels
Input : 1.5V
Output: 1.5V
Input Pulse Rise and Fall Times: 5 ns
相關(guān)PDF資料
PDF描述
DS1685EN-5 1 TIMER(S), REAL TIME CLOCK, PDSO24
DS1685-5 1 TIMER(S), REAL TIME CLOCK, PDIP24
DS1685SN-3 1 TIMER(S), REAL TIME CLOCK, PDSO24
DS1685Q-5 1 TIMER(S), REAL TIME CLOCK, PQCC28
DS1689SN 1 TIMER(S), REAL TIME CLOCK, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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