參數(shù)資料
型號: MT90820
廠商: Mitel Networks Corporation
英文描述: Large Digital Switch(大數(shù)字開關(guān))
中文描述: 大型數(shù)字交換(大數(shù)字開關(guān))
文件頁數(shù): 29/33頁
文件大?。?/td> 132K
代理商: MT90820
CMOS
MT90820
29
Note:
1. High Impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to discharge C
L
.
Figure 18 - Motorola Non-Multiplexed Bus Timing
AC Electrical Characteristics - Motorola Non-Multiplexed Bus Mode
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
4
5
6
7
8
CS setup from DS falling
R/W setup from DS falling
Address setup from DS falling
CS hold after DS rising
R/W hold after DS rising
Address hold after DS rising
Data setup from DTA Low on Read
Data hold on read
t
CSS
t
RWS
t
ADS
t
CSH
t
RWH
t
ADH
t
DDR
t
DHR
0
ns
ns
ns
ns
ns
ns
ns
ns
10
2
0
5
5
0
10
C
L
=150pF
C
L
=150pF, R
L
=1K
Note 1
50
75
9
Data setup on write (fast write)
Valid Data Delay on write (slow write)
Data hold on write
Acknowledgment Delay:
Reading/Writing Registers
Reading/Writing Memory, @ 2Mb/s
@ 4Mb/s
@ 8Mb/s
Acknowledgment Hold Time
t
DSW
t
SWD
t
DHW
t
AKD
20
ns
ns
ns
10
11
12
122
8
55/60
760/780
400/420
220/240
80
ns
ns
ns
ns
ns
C
L
=150pF
C
L
=150pF
C
L
=150pF
C
L
=150pF
C
L
=150pF, R
L
=1K,
Note 1
13
t
AKH
45
DS
A0-A7
AD0-AD7
D8-D15
READ
CS
AD0-AD7
D8-D15
WRITE
t
CSS
t
CSH
t
ADH
t
DHR
t
RWS
R/W
t
ADS
t
RWH
t
DHW
t
AKD
t
SWD
t
DDR
t
AKH
DTA
V
TT
V
TT
V
TT
V
TT
V
TT
V
TT
V
TT
t
DSW
VALID ADDRESS
VALID READ DATA
VALID WRITE DATA
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