11-20
MC68340 USER’S MANUAL
MOTOROLA
11.9 TIMER MODULE ELECTRICAL SPECIFICATIONS (See notes (a), (b), (c), and (d)
corresponding to part operation, GND = 0 Vdc, TA = 0 to 70
°C; see Figures 11-13 and 11-14)
3.3 V
3.3 V or 5.0 V
5.0 V
8.39 MHz
16.78 MHz
25MHz
Num.
Characteristic
Symbol
Min
Max
Min
Max
Min
Max
Unit
1
CLKOUT Period in Crystal Mode
tcyc
119.2
—
59.6
—
40
—
ns
2
Clock Rise and Fall Time
trf
—20—
10
—
5
ns
3
TIN/
TGATE High or Low Time, Minimum
Pulse Width
—
tcyc+40
—
tcyc+20
—
tcyc+12
—
ns
41
Asynchronous Input Setup Time to
CLKOUT Low
—
15
—
8, 5
—
5
—
ns
5
Asynchronous Input Hold Time from
CLKOUT Low
—
30
—
15
—
8
—
ns
6
Asynchronous Input Setup Time to
CLKOUT High
—
10
—
5
—
3
—
ns
7
Asynchronous Input Hold Time from
CLKOUT High
—
30
—
15
—
8
—
ns
8
CLKOUT High to TOUT Valid
tTO
3603
30320
ns
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.
TGATE
TIN
CLKOUT
2
3
2
3
1
Figure 11-13. Timer Module Clock Signal Timing Diagram
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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