MPC862 datasheet(19/88 Pages) MOTOROLA

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MOTOROLA

MPC862/857T/857DSL Hardware Speciﬁcations

Bus Signal Timing

B28

CLKOUT rising edge to WE(0:3)

negated GPCM write access CSNT

= 0 (MAX = 0.00 x B1 + 9.00)

—

9.00

—

9.00

—

9.00

—

9.00

B28a CLKOUT falling edge to WE(0:3)

negated GPCM write access

TRLX = 0, 1, CSNT = 1, EBDF = 0

(MAX = 0.25 x B1 + 6.80)

7.60

14.30

6.30

13.00

5.00

11.80

3.80

10.50

B28b CLKOUT falling edge to CS negated

GPCM write access TRLX = 0,1,

CSNT = 1 ACS = 10 or ACS = 11,

EBDF = 0 (MAX = 0.25 x B1 + 6.80)

—

14.30

—

13.00

—

11.80

—

10.50

B28c CLKOUT falling edge to WE(0:3)

negated GPCM write access

TRLX = 0, CSNT = 1 write access

TRLX = 0,1, CSNT = 1, EBDF = 1

(MAX = 0.375 x B1 + 6.6)

10.90

18.00

10.90

18.00

7.00

14.30

5.20

12.30

B28d CLKOUT falling edge to CS negated

GPCM write access TRLX = 0,1,

CSNT = 1, ACS = 10, or ACS = 11,

EBDF = 1 (MAX = 0.375 x B1 + 6.6)

—

18.00

—

18.00

—

14.30

—

12.30

B29

WE(0:3) negated to D(0:31), DP(0:3)

High-Z GPCM write access, CSNT

= 0, EBDF = 0 (MIN = 0.25 x B1 - 2.00)

5.60

—

4.30

—

3.00

—

1.80

—

B29a WE(0:3) negated to D(0:31), DP(0:3)

High-Z GPCM write access, TRLX = 0,

CSNT = 1, EBDF = 0 (MIN = 0.50 x B1

- 2.00)

13.20

—

10.50

—

8.00

—

5.60

—

B29b CS negated to D(0:31), DP(0:3), High

Z GPCM write access, ACS = 00,

TRLX = 0,1 & CSNT = 0 (MIN = 0.25 x

B1 - 2.00)

5.60

—

4.30

—

3.00

—

1.80

—

B29c CS negated to D(0:31), DP(0:3)

High-Z GPCM write access, TRLX = 0,

CSNT = 1, ACS = 10, or ACS = 11

EBDF = 0 (MIN = 0.50 x B1 - 2.00)

13.20

—

10.50

—

8.00

—

5.60

—

B29d WE(0:3) negated to D(0:31), DP(0:3)

High-Z GPCM write access, TRLX = 1,

CSNT = 1, EBDF = 0 (MIN = 1.50 x B1

- 2.00)

43.50

—

35.50

—

28.00

—

20.70

—

B29e CS negated to D(0:31), DP(0:3)

High-Z GPCM write access, TRLX = 1,

CSNT = 1, ACS = 10, or ACS = 11

EBDF = 0 (MIN = 1.50 x B1 - 2.00)

43.50

—

35.50

—

28.00

—

20.70

—

Table 7. Bus Operation Timings (continued)

Num

Characteristic

33 MHz

40 MHz

50 MHz

66 MHz

Unit

Min

Max

Min

Max

Min

Max

Min

Max

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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