MPC852T datasheet(19/80 Pages) FREESCALE

19 / 80 page

MPC852T Hardware Specifications, Rev. 3.1

Freescale Semiconductor

Bus Signal Timing

B32d CLKOUT falling edge to BS valid- as requested

by control bit BST1 in the corresponding word

in the UPM, EBDF = 1 (MAX = 0.375 x B1 +

6.60)

13.30

18.00

11.30

16.00

9.40

14.10

7.60

12.30

B33

CLKOUT falling edge to GPL valid - as

requested by control bit GxT4 in the

corresponding word in the UPM (MAX = 0.00 x

B1 + 6.00)

1.50

6.00

1.50

6.00

1.50

6.00

1.50

6.00

B33a CLKOUT rising edge to GPL Valid - as

requested by control bit GxT3 in the

corresponding word in the UPM (MAX = 0.25 x

B1 + 6.80)

7.60

14.30

6.30

13.00

5.00

11.80

3.80

10.50

B34

A(0:31), BADDR(28:30), and D(0:31) to CS

valid - as requested by control bit CST4 in the

corresponding word in the UPM (MIN = 0.25 x

B1 - 2.00)

5.60

—

4.30

—

3.00

—

1.80

—

B34a A(0:31), BADDR(28:30), and D(0:31) to CS

valid - as requested by control bit CST1 in the

corresponding word in the UPM (MIN = 0.50 x

B1 - 2.00)

13.20

—

10.50

—

8.00

—

5.60

—

B34b A(0:31), BADDR(28:30), and D(0:31) to CS

valid - as requested by CST2 in the

corresponding word in UPM (MIN = 0.75 x B1 -

2.00)

20.70

—

16.70

—

13.00

—

9.40

—

B35

A(0:31), BADDR(28:30) to CS valid - as

requested by control bit BST4 in the

corresponding word in the UPM (MIN = 0.25 x

B1 - 2.00)

5.60

—

4.30

—

3.00

—

1.80

—

B35a A(0:31), BADDR(28:30), and D(0:31) to BS

valid - As Requested by BST1 in the

corresponding word in the UPM (MIN = 0.50 x

B1 - 2.00)

13.20

—

10.50

—

8.00

—

5.60

—

B35b A(0:31), BADDR(28:30), and D(0:31) to BS

valid - as requested by control bit BST2 in the

corresponding word in the UPM (MIN = 0.75 x

B1 - 2.00)

20.70

—

16.70

—

13.00

—

9.40

—

B36

A(0:31), BADDR(28:30), and D(0:31) to GPL

valid as requested by control bit GxT4 in the

corresponding word in the UPM (MIN = 0.25 x

B1 - 2.00)

5.60

—

4.30

—

3.00

—

1.80

—

B37

UPWAIT valid to CLKOUT falling edge 9 (MIN

= 0.00 x B1 + 6.00)

6.00

—

6.00

—

6.00

—

6.00

—

B38

CLKOUT falling edge to UPWAIT valid 9 (MIN

= 0.00 x B1 + 1.00)

1.00

—

1.00

—

1.00

—

1.00

—

Table 9. Bus Operation Timings (continued)

Num

Characteristic

33 MHz

40 MHz

50 MHz

66 MHz

Unit

Min

Max

Min

Max

Min

Max

Min

Max

MPC852T Datasheet(PDF) 19 Page - Freescale Semiconductor, Inc

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