MPC8250AZUMHBC データシートの表示（PDF） - Freescale Semiconductor

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MPC8250AZUMHBC

MPC8250 Hardware Specifications

Freescale Semiconductor 

Electrical and Thermal Characteristics

Table 8. AC Characteristics for CPM Inputs 1

Spec Number

Max

Min

Characteristic

Setup (ns)

Hold (ns)

66 MHz 83 MHz 66 MHz 83 MHz

sp20

sp21 TDM inputs/SI

15

12

12

10

sp18a

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

20

16

0

0

sp18b

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

5

4

5

4

sp22

sp23 PIO/TIMER/IDMA inputs

10

8

3

3

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.

Note that 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.

Figure 3 shows the FCC external clock.

Serial ClKin

FCC input signals

sp16b

FCC output signals

Note: When GFMR[TCI] = 0

sp17b

sp36b/sp37b

FCC output signals

Note: When GFMR[TCI] = 1

Figure 3. FCC External Clock Diagram

sp36b/sp37b

MPC8250 Hardware Specifications, Rev. 2

Freescale Semiconductor

13

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