MT90870 Zarlink Semiconductor, Inc., MT90870 Datasheet - Page 74

• Manufacturer Part Number: MT90870
• Description: Flexible 12k Digital Switch (F12kDX)
• Manufacturer: Zarlink Semiconductor, Inc.

MT90870
Non-Multiplexed Microprocessor Port Timing
Note:
1. High impedance is measured by pulling to the appropriate rail with R
74
10
11
12
13
1
2
3
4
5
6
7
8
9
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)
Valid Data Delay on write (slow write)
Data hold on write
Acknowledgment Delay:
Acknowledgment Hold Time
Reading/Writing Registers
Reading/Writing Memory
Characteristics
Figure 27 - Serial Output and External Control
CLK
ODE
STo
STo
STo
Figure 28 - Output Driver Enable (ODE)
Hi-Z
Valid Data
t
ODE
t
t
t
t
t
Sym
t
t
t
t
t
t
t
t
RWS
RWH
DSW
SWD
DHW
HiZ
CSH
ADH
DDR
DHR
CSS
ADS
AKD
AKH
Valid Data
t
DZ
t
ZD
t
ODZ
Min
L
, with timing corrected to cancel time taken to discharge C
Valid Data
HiZ
Hi-Z
VTT
Typ
122
30
10
10
10
10
15
50
25
10
55
60
80
0
VTT
VTT
VTT
VTT
Max
Preliminary Information
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
Test Conditions
C
C
C
C
C
R
L
L
L
L
L
R
Note 1
Note 1
=150pF,
=150pF,
=150pF
=150pF
=150pF
L
L
=1K,
=1K
L
.