MPC5533 datasheet(34/50 Pages) FREESCALE

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MPC5533 Microcontroller Data Sheet, Rev. 0.0

Electrical Characteristics

Freescale Semiconductor

3.13.4

External Bus Interface (EBI) Timing

Table 22 lists the timing information for the external bus interface (EBI).

Table 22. External Bus Operation Timing1, 2

Spec

Characteristic

and

Description

Symbol

External Bus Frequency 3

Unit

Notes

20 MHz

33 MHz

40 MHz

Min.

Max

Min.

Max

Min.

Max

CLKOUT period

24.4

—17.5—

14.9

—ns

Signals are measured at

50% VDDE.

CLKOUT duty cycle

tCDC

45%

55%

45%

55%

45%

55%

CLKOUT rise time

tCRT

—

—4

——

—

—4

CLKOUT fall time

tCFT

—

—4

——4

—

—4

5 5

CLKOUT positive edge to

output signal invalid or

Hi-Z (hold time)

External bus interface

CS[0:3]

ADDR[8:31]

DATA[0:15]

RD_WR

BDIP

WE/BE[0:1]

tCOH

1.06

1.5

—

1.06

1.5

—

1.06

1.5

—ns

EBTS = 0

EBTS = 1

Hold time selectable via

SIU_ECCR

[EBTS] bit.

6 5

CLKOUT positive edge to

output signal valid

(output delay)

External bus interface

CS[0:3]

ADDR[8:31]

DATA[0:15]

RD_WR

BDIP

WE/BE[0:1]

tCOV

—

10.06

11.0

—

10.06

11.0

—

10.06

11.0

EBTS = 0

EBTS = 1

Output valid time

selectable via

SIU_ECCR

[EBTS] bit.

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