General Timing Specifications

MCF548x Integrated Microprocessor Electrical Characteristics, Rev. 2.4

Freescale Semiconductor

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General Timing Specifications

Table 19 lists timing specifications for the GPIO, PSC, FlexCAN, DREQ, DACK, and external interrupts.

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Table 19. General AC Timing Specifications

Name

Characteristic

Min

Max

Unit

G1

CLKIN high to signal output valid

—

2

PSTCLK

G2

CLKIN high to signal invalid (output hold)

0

—

ns

G3

Signal input pulse width

2

—

PSTCLK

Num

Characteristic

Min

Max

Units

I1

Start condition hold time

2

—

Bus clocks

I2

Clock low period

8

—

Bus clocks

I3

—

1

mS

I4

Data hold time

0

—

ns

I5

—

1

mS

I6

Clock high time

4

—

Bus clocks

I7

Data setup time

0

—

ns

I8

Start condition setup time (for repeated start condition only)

2

—

Bus clocks

I9

Stop condition setup time

2

—

Bus clocks

Num

Characteristic

Min

Max

Units

Start condition hold time

6

—

Bus clocks

I2 1

Clock low period

10

—

Bus clocks

—

—

µS

I4 1

Data hold time

7

—

Bus clocks

—

3

ns

I6 1

Clock high time

10

—

Bus clocks

I7 1

Data setup time

2

—

Bus clocks

I8 1

Start condition setup time (for repeated start

condition only)

20

—

Bus clocks

I9 1

Stop condition setup time

10

—

Bus clocks