MPC8248CZQB datasheet(17/56 Pages) MOTOROLA

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MPC8272 PowerQUICC II™ Family Hardware Speciﬁcations

MOTOROLA

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

AC Electrical Characteristics

Figure 5 shows the SCC/SMC/SPI/I2C external clock.

Figure 5. SCC/SMC/SPI/I2C External Clock Diagram

Figure 6 shows the SCC/SMC/SPI/I2C internal clock.

Figure 6. SCC/SMC/SPI/I2C Internal Clock Diagram

Serial CLKin

SCC/SMC/SPI/I2C input signals

SCC/SMC/SPI/I2C output signals

sp18b

sp19b

sp38b/sp39b

(See note)

Note: There are four possible timing conditions for SCC and SPI:

1. Input sampled on the rising edge and output driven on the rising edge (shown).

2. Input sampled on the rising edge and output driven on the falling edge.

3. Input sampled on the falling edge and output driven on the falling edge.

4. Input sampled on the falling edge and output driven on the rising edge.

BRG_OUT

SCC/SMC/SPI/I2C input signals

SCC/SMC/SPI/I2C output signals

sp18a

sp19a

sp38a/sp39a

(See note)

Note: There are four possible timing conditions for SCC and SPI:

1. Input sampled on the rising edge and output driven on the rising edge (shown).

2. Input sampled on the rising edge and output driven on the falling edge.

3. Input sampled on the falling edge and output driven on the falling edge.

4. Input sampled on the falling edge and output driven on the rising edge.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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