參數(shù)資料
型號: DS2172T
廠商: DALLAS SEMICONDUCTOR
元件分類: Telecom IC:Other
英文描述: SPECIALTY TELECOM CIRCUIT, PQFP32
封裝: TQFP-32
文件頁數(shù): 8/22頁
文件大小: 174K
代理商: DS2172T
DS2172
16 of 22
AC CHARACTERISTICS - PARALLEL PORT
(0
0C to 700C for DS2172T; V
DD=5V10%)
-40
0C to +850C for DS2172TN; V
DD=5V10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Cycle Time
tCYC
200
ns
Pulse Width, DS Low or RD High
PWEL
100
ns
Pulse Width, DS High or RD Low
PWEH
100
ns
Input Rise/Fall Times
tR, tF
20
ns
R/ W Hold Times
tRWH
10
ns
R/ W Setup Time Before DS High
tRWS
50
ns
CS
Setup Time Before DS, WR or RD
Active
tCS
20
ns
CS
Hold Time
tCH
0ns
Read Data Hold Time
tDHR
550
ns
Write Data Hold Time
tDHW
0ns
Mux'ed Address Valid to AS or ALE
Fall
tASL
15
ns
Mux'ed Address Hold Time
tAHL
10
ns
Delay Time DS, WR or RD to AS or
ALE Rise
tASD
20
ns
Pulse Width AS or ALE High
PWASH
30
ns
Delay Time, AS or ALE to DS, WR or
RD
tASED
10
ns
Output Data Delay Time from DS or
RD
tDDR
550
ns
Data Setup Time
tDSW
50
ns
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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