MPC755 RISC Microprocessor Hardware Specifications Addendum for the XPC755xxxnnnLE Series, Rev. 0.1

Freescale Semiconductor

3

4.2.1

Clock AC Specifications

Table 7. Power Consumption for MPC755

Processor (CPU) Frequency

Unit

Notes

400 MHz

450 MHz

Full-Power Mode

Typical

4.0

4.6

W

1, 3, 4

Maximum

6.0

8.0

W

1, 2

Doze Mode

Maximum

2.3

2.8

W

1, 2, 4

Nap Mode

Maximum

1.0

1.0

W

1, 2, 4

Sleep Mode

Maximum

470

470

mW

1, 2, 4

Sleep Mode (PLL and DLL Disabled)

Maximum

430

430

mW

1, 2

Notes:

instructions which keep the execution units maximally busy.

running a typical code sequence.

4. Not 100% tested. Characterized and periodically sampled.

Table 8. Clock AC Timing Specifications

At recommended operating conditions (see Table 3)

Characteristic

Symbol

Maximum Processor Core Frequency

Unit

Notes

400 MHz

450 MHz

Min

Max

Min

Max

Processor frequency

200

400

200

450

MHz

1

VCO frequency

400

800

400

900

MHz

1

Note:

1. Caution: The SYSCLK frequency and PLL_CFG[0:3] settings must be chosen such that the resulting SYSCLK (bus)

frequency, CPU (core) frequency, and PLL (VCO) frequency do not exceed their respective maximum or minimum operating

frequencies. Refer to the PLL_CFG[0:3] signal description in Section 1.8.1, “PLL Configuration

settings.