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參數(shù)資料
| 型號(hào)： | MT8985 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Enhanced Digital Switch(加強(qiáng)型數(shù)字開(kāi)關(guān)) |
| 中文描述： | 增強(qiáng)型數(shù)字交換機(jī)（加強(qiáng)型數(shù)字開(kāi)關(guān)） |
| 文件頁(yè)數(shù)： | 17/24頁(yè) |
| 文件大小： | 147K |
| 代理商： | MT8985 |
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MT8985
2-61
Timing is over recommended temperature & power supply voltages .
Typical figures are at 25
°
C and are for design aid only: not guaranteed and not subject to production testing.
* 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 17 - Motorola Non-Multiplexed Bus Timing
AC Electrical Characteristics
- Microprocessor Bus
Voltages are with respect to ground (VSS) unless otherwise stated .
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
4
5
6
7
8
CS Setup from DS rising
R/W Setup from DS rising
Add setup from DS rising
CS hold after DS falling
R/W hold after DS falling
Add hold after DS falling
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
30
5
0
5
5
10
10
C
L
=150 pF
R
L
=1 K
*
,
C
L
=150 pF
50
90
9
Data setup on write (fast write)
Valid Data Delay on write
(slow write)
Data hold on write
Acknowledgement Delay:
t
DSW
t
SWD
20
ns
ns
10
122
11
12
t
DHW
t
AKD
8
ns
Reading Data Memory
Reading/Writing Conn. Memory
Writing to Control Register
Reading Control Register
Acknowledgement Hold Time
560
300/370
47
70
60
1220
730/800
95
155
110
ns
ns
ns
ns
ns
C
L
=150 pF
13
t
AKH
10
R
L
=1 K
*
,
C
L
=150 pF
CS
R/W
A0-A6
D0-D7
READ
D0-D7
WRITE
DTA
t
CSS
t
RWS
t
ADS
t
CSH
t
RWH
t
ADH
t
SWD
t
DSW
t
DHR
VALID DATA
t
DDR
t
DHW
t
AKH
t
AKD
VALID DATA
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
DS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8985AE | 制造商:MITEL 功能描述: |
| MT8985AE1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE ENHANCED DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE ENHANCED DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP - Rail/Tube 制造商:Microsemi 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 40PDIP |
| MT8985AL | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays |
| MT8985AL1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays |
| MT8985AP | 制造商:Microsemi Corporation 功能描述: 制造商:Mitel Networks Corporation 功能描述: 制造商:MITEL 功能描述: |
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