MPC7448 Hardware Specifications Addendum for the MC7448xxnnnnNx Series, Rev. 6

Freescale Semiconductor

5

General Parameters

Table 7 provides the power consumption for the MPC7448 part numbers described by this document; see

RISC Microprocessor Hardware Specifications presents guidelines on the use of these parameters for

system design. For information on power consumption when dynamic frequency switching is enabled, see

The power consumptions provided in Table 7 represent the power consumption of each speed grade when

operated at the rated maximum core frequency (see Table 8). Freescale sorts devices by power as well as

by core frequency, and power limits for each speed grade are independent of each other. Each device is

tested at its maximum core frequency only. (Note that Deep Sleep Mode power consumption is

independent of clock frequency.) Operating a device at a frequency lower than its rated maximum is fully

supported provided the clock frequencies are within the specifications given in Table 8, and a device

operated at a core frequency below its rated maximum will have lower power consumption. However,

inferences should not be made about a device’s power consumption based on the power specifications of

another (lower) speed grade. For example, a 1267 MHz device operated at 1000 MHz may not exhibit the

same power consumption as a 1000 MHz device operated at 1000 MHz.

NOTE

The power consumption information in this table applies when the device

operates at the nominal core voltage indicated in Table 4. For power

consumption at derated core voltage conditions, see Section 5.3, “Voltage

and Frequency Derating.”