MC68HC000FN12 查看數據表（PDF） - Motorola => Freescale

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MC68HC000FN12

Addendum to M68000 User Manual

Motorola => Freescale 

8.0 MC68SEC000 AC ELECTRICAL SPECIFICATIONS — BUS

ARBITRATION

Add the following table and Figure 11 to Section 10.17.

(GND = 0 Vdc; TA = TL to TH; refer to Figure 13)

NUM

CHARACTERISTICp

7 Clock High to Address, Data Bus High Impedance (Maximum)

16

Clock High to Control Bus High Impedance

33

Clock High to BG Asserted

34

Clock High to BG Negated

35

BR Asserted to BG Asserted

36

BR Negated to BG Negated

38 BG Asserted to Control, Address, Data Bus High Impedance (AS

Negated)

39

BG Width Negated

47

Asynchronous Input Setup Time

581

BR Negated to AS, LDS, UDS, R/W Driven

58A1

BR Negated to FC Driven

10MHz

MIN MAX

—

55

—

55

0

35

0

35

1.5 3.5

1.5 3.5

—

55

1.5 —

5

—

1.5 —

1

—

16MHz

MIN MAX

—

50

—

50

0

30

0

30

1.5 3.5

1.5 3.5

—

50

1.5 —

5

—

1.5 —

1

—

20MHz

UNIT

MIN MAX

—

42

ns

—

42

ns

0

25

ns

0

25

ns

1.5 3.5 Clks

1.5 3.5 Clks

—

42

ns

1.5 — Clks

5

—

ns

1.5 — Clks

1

— Clks

Applies to 3.3V and 5V.

1. The minimum value must be met to guarantee proper operation. If the maximum value is exceeded, BG may be reasserted.

16

M68000 USER’S MANUAL ADDENDUM

MOTOROLA

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