MT90826 Mitel Networks Corporation, MT90826 Datasheet - Page 26

• Manufacturer Part Number: MT90826
• Description: Quad Digital Switch
• Manufacturer: Mitel Networks Corporation

MT90826
AC Electrical Characteristics - Motorola Non-Multiplexed Bus Mode
26
12a Acknowledgment Delay: Register RD or WR
12b Acknowledgment Delay: Memory RD or WR
10 Valid Data Delay on write (slow write)
11 Data hold on write
13 Acknowledgment Hold Time
Note:
1
2
3
4
5
6
7
8
9
1. High Impedance is measured by pulling to the appropriate rail with R
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
Data setup on write (fast write)
R/W
DTA
A0-A7
D0-D15
READ
D0-D15
WRITE
DS
CS
16Mb/s, 16&8Mb/s, 8Mb/s, 4&8Mb/s
4Mb/s, 4&2Mb/s
2Mb/s
Characteristics
CMOS
Figure 14 - Motorola Non-Multiplexed Bus Timing
t
t
ADS
CSS
t
RWS
Sym
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DHW
RWS
RWH
DSW
SWD
CSH
ADH
DDR
DHR
CSS
ADS
AKD
AKD
AKH
t
SWD
L
, with timing corrected to cancel time taken to discharge C
Min
185
10
10
27
12
50
85
13
0
2
0
2
0
Valid Address
t
AKD
t
DDR
Typ
Valid Read Data
Valid Write Data
t
DSW
Max
100
140
240
20
55
24
Advanced Information
Units
t
t
CSH
DHW
t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DHR
t
t
RWH
ADH
t
AKH
C
C
Note 1
C
C
C
Note 1
Test Conditions
L
L
L
L
L
=150pF
=150pF, R
=150pF
=150pF
=150pF, R
V
V
V
V
V
V
V
TT
TT
TT
TT
TT
TT
TT
L
.
L
L
=1K
=1K,