Motorola M68000 - MC68008 AC Electrical Specifications-Clock Timing

MOTOROLA M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL 10-9
10.9 MC68008 AC ELECTRICAL SPECIFICATIONS — CLOCK TIMING (See
Figure 10-3)
Num Characteristic 8 MHz* 10 MHz* Unit
Min Max Min Max
Frequency of Operation 2.0 8.0 2.0 10.0 MHz
1 Cycle Time 125 500 100 500 ns
2,3 Clock Pulse Width 55 250 45 250 ns
4,5 Clock Rise and Fall Times — 10 — 10 ns
*These specifications represent an improvement over previously published specifications for the 8-, and 10-MHz
MC68008 and are valid only for product bearing date codes of 8827 and later
.
0.8 V
2.0 V
Timing measurements are referenced to and from a low voltage of 0.8 V and a high
voltage of 2.0 V, unless otherwise noted. The voltage swing through this range
should start outside and pass through the range such that the rise or fall will be linear
between 0.8 V and 2.0 V.
NOTE:
4 5
2
1
3
Figure 10-3. Clock Input Timing Diagram
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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