DS21348 Dallas Semiconducotr, DS21348 Datasheet - Page 61

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DS21348

Manufacturer Part Number
DS21348
Description
3.3V E1/T1/J1 Line Interface
Manufacturer
Dallas Semiconducotr
Datasheet

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12.
AC CHARACTERISTICS—MULTIPLEXED PARALLEL PORT
(BIS1 = 0, BIS0 = 0)
Cycle Time
Pulse Width, DS Low or
RD* High
Pulse Width, DS High
or RD* Low
Input Rise/Fall Times
R/W* Hold Time
R/W* Setup Time
Before DS High
CS* Setup Time Before
DS, WR* or RD*
Active
CS* Hold Time
Read Data Hold Time
Write Data Hold Time
Muxed Address Valid to
AS or ALE Fall
Muxed Address Hold
Time
Delay Time DS, WR*
or RD* to AS or ALE
Rise
Pulse Width AS or ALE
High
Delay Time, AS or ALE
to DS, WR* or RD*
Output Data Delay
Time from DS or RD*
Data Setup Time
See Figure 12-1, Figure 12-2, Figure 12-3
PARAMETER
AC CHARACTERISTICS
SYMBOL
PW
PW
PW
t
t
t
t
t
t
t
t
t
t
R
t
t
ASED
RWH
DHW
RWS
t
DSW
CYC
t
DHR
AHL
DDR
ASD
ASL
CH
CS
, t
ASH
EH
EL
F
MIN
200
100
100
10
50
20
10
15
10
20
30
10
20
50
0
0
61 of 73
TYP
(-40°C to +85°C; V
-40°C to +85°C; V
MAX
20
50
80
UNITS
DD
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DD
= 3.3V ± 5%;
= 5.0V ± 5%)
NOTES

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