MT90866 View Datasheet(PDF) - Zarlink Semiconductor Inc
Part Name
Description
Manufacturer
MT90866
Zarlink Semiconductor Inc
MT90866 Datasheet PDF : 86 Pages
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MT90866
Data Sheet
AC Electrical Characteristics† - Motorola Non-Multiplexed Bus Mode
Characteristics
Sym. Min. Typ.‡
Max.
Units Test Conditions1
1 CS setup from DS falling
tCSS
0
ns
2 R/W setup from DS falling
tRWS
15
ns
3 Address setup from DS falling
tADS
5
ns
4 CS hold after DS rising
tCSH
0
ns
5 R/W hold after DS rising
tRWH
0
ns
6 Address hold after DS rising
tADH
5
ns
7 Data setup from DTA Low on Read
tDDR
20
ns CL=30pF
8 Data hold on read
tDHR
20
ns CL=30pF, RL=1K
See Note 2
9 Valid Write Data Setup
tWDS
20
ns
10 Data hold on write
tDHW
8
ns
11 Acknowledgment Delay:
Reading/Writing Registers
Reading/Writing Memory
12 Acknowledgment Hold Time
tAKD
tAKH
97/82 110/95
158/114 171/127
30
ns CL=30pF
ns CL=30pF
ns CL=30pF, RL=1K,
See Note 2
† Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
*Note 1: A delay of 100 microseconds must be applied before the first microprocessor access is performed after the RESET pin is set high.
*Note 2: High Impedance is measured by pulling to the appropriate rail with RL, with timing corrected to cancel the time taken to discharge CL.
DS
CS
R/W
A0-A13
D0-D15
READ
D0-D15
WRITE
DTA
tCSS
tCSH
tRWS
tRWH
tADS
tWDS
VALID ADDRESS
tADH
tDHR
VALID READ DATA
VALID WRITE DATA
tDHW
tDDR
tAKD
tAKH
Figure 44 - Motorola Non-Multiplexed Bus Timing
VTT
VTT
VTT
VTT
VTT
VTT
VTT
82
Zarlink Semiconductor Inc.
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