MPC8248CZQB datasheet(15/56 Pages) MOTOROLA

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MPC8272 PowerQUICC II™ Family Hardware Speciﬁcations

MOTOROLA

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

AC Electrical Characteristics

Table 10 lists CPM input characteristics.

NOTE

Although the speciﬁcations generally reference the rising edge of the

clock, the following AC timing diagrams also apply when the falling edge

is the active edge.

Table 9. AC Characteristics for CPM Outputs 1

1 Output speciﬁcations are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal.

Timings are measured at the pin.

Spec Number

Characteristic

Value (ns)

Max

Min

Maximum Delay

Minimum Delay

MHz

100

MHz

100

MHz

sp36a

sp37a

FCC outputs—internal clock (NMSI)

5.5

sp36b

sp37b

FCC outputs—external clock (NMSI)

sp38a

sp39a

SCC/SMC/SPI/I2C outputs—internal clock (NMSI)

0.5

sp38b

sp39b

SCC/SMC/SPI/I2C outputs—external clock (NMSI)

sp40

sp41

TDM outputs/SI

sp42

sp43

TIMER/IDMA outputs

0.5

sp42a

sp43a

PIO outputs

0.5

Table 10. AC Characteristics for CPM Inputs 1

1 Input speciﬁcations are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN.

Timings are measured at the pin.

Spec Number

Characteristic

Value (ns)

Setup

Hold

Setup

Hold

MHz

100

MHz

100

MHz

sp16a

sp17a FCC inputs—internal clock (NMSI)

88000

sp16b

sp17b FCC inputs—external clock (NMSI)

2.5

sp18a

sp19a SCC/SMC/SPI/I2C inputs—internal clock (NMSI)

sp18b

sp19b SCC/SMC/SPI/I2C inputs—external clock (NMSI)

544222

sp20

sp21

TDM inputs/SI

755433

sp22

sp23

PIO/TIMER/IDMA inputs

0.5

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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