Motorola MC68340 ユーザーズマニュアル

11-20

MOTOROLA

(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)

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

4

1

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

3

60

3

30

3

20

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

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Freescale Semiconductor, Inc.

For More Information On This Product,

   Go to: www.freescale.com

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