Timer Module Electrical Specifications; Timer Module Clock Signal Timing Diagram - Motorola MC68340 User Manual

11.9 TIMER MODULE ELECTRICAL SPECIFICATIONS

corresponding to part operation, GND = 0 Vdc, TA = 0 to 70 C; see Figures 11-13 and 11-14)
Num. Characteristic
1 CLKOUT Period in Crystal Mode
2 Clock Rise and Fall Time
3 TIN/ TGATE High or Low Time, Minimum
Pulse Width
1
4 Asynchronous Input Setup Time to
CLKOUT Low
5 Asynchronous Input Hold Time from
CLKOUT Low
6 Asynchronous Input Setup Time to
CLKOUT High
7 Asynchronous Input Hold Time from
CLKOUT High
8 CLKOUT High to TOUT Valid
NOTES:
(a) The electrical specifications in this document for both the 8.39 and 16.78 MHz @ 3.3 V 0.3 V are preliminary
and apply only to the appropriate MC68340V low voltage part.
(b) The 16.78-MHz specifications apply to the MC68340 @ 5.0 V 5% operation.
(c) The 25.16 MHz @ 5.0 V 5% electrical specifications are preliminary.
(d) For extended temperature parts T A = –40 to +85 C. These specifications are preliminary.
1. Specification #4 for 16.78 MHz @ 3.3 V 0.3 V will be 8 ns.
CLKOUT
TIN
TGATE
Figure 11-13. Timer Module Clock Signal Timing Diagram
11-20
Freescale Semiconductor, Inc.
Symbol
t cyc
t rf
—
—
—
—
—
t TO
2
3
MC68340 USER'S MANUAL
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(See notes (a), (b), (c), and (d)
3.3 V 3.3 V or 5.0 V
8.39 MHz 16.78 MHz
Min Max Min Max
119.2 — 59.6 —
— 20 — 10
t cyc +40 — t cyc +20 —
15 — 8, 5 —
30 — 15 —
10 — 5 —
30 — 15 —
3 60 3 30
1
2
3
5.0 V
25MHz
Min Max Unit
40 — ns
— 5 ns
t cyc +12 — ns
5 — ns
8 — ns
3 — ns
8 — ns
3 20 ns
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