MPC7448 datasheet(4/8 Pages) FREESCALE

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MPC7448 Hardware Specifications Addendum for the MC7448Txxnnnnmx Series, Rev. 2

Freescale Semiconductor

General Parameters

5.2.1 Clock AC Specifications

Table 8 provides the clock AC timing specifications for the MPC7448 part numbers discussed here.

NOTE

The core frequency information in this table applies when the device

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

frequency specifications at derated core voltage conditions, see Section 5.3,

“Voltage and Frequency Derating.”

Table 7. Power Consumption for MPC7448 at Maximum Rated Frequency

Die

Junction

(Tj) (•C)

Maximum Processor Core Frequency

(Speed Grade, MHz)

Unit

Notes

1000N

1267N 7

1400N

1700L

Full-Power Mode

Typical

9.5

8.4

11.0

21.0

1, 2

Thermal

105

12.0

10.3

13.7

25.6

1, 5

Maximum

105

13.9

12.0

15.9

29.8

1, 3

Nap Mode

Typical

105

6.5

8.3

13.0

1, 6

Sleep Mode

Typical

105

6.3

8.0

12.5

1, 6

Deep Sleep Mode (PLL Disabled)

Typical

105

6.0

7.7

12.0

1, 6

Notes:

1. These values specify the power consumption for the core power supply (VDD) at nominal voltage and apply to all valid

processor bus frequencies and configurations. The values do not include I/O supply power (OVDD) or PLL supply power

(AVDD). OVDD power is system dependent but is typically < 5% of VDD power. Worst case power consumption for

AVDD <13mW.

2. Typical nominal power consumption is an average value measured at the nominal recommended VDD (see Table 4) and

°C while running the Dhrystone 2.1 benchmark and achieving 2.3 Dhrystone MIPs/MHz. This parameter is not 100%

tested but periodically sampled.

3. Maximum power consumption is the average measured at nominal VDD and maximum operating junction temperature (see

Table 4) while running an entirely cache-resident, contrived sequence of instructions to keep all the execution units

maximally busy.

4. Doze mode is not a user-definable state; it is an intermediate state between full-power and either nap or sleep mode. As a

result, power consumption for this mode is not tested.

5. Typical thermal power consumption is an average value measured at the nominal recommended VDD (see Table 4) and

105

°C while running the Dhrystone 2.1 benchmark and achieving 2.3 Dhrystone MIPs/MHz. This parameter is not 100%

tested but periodically sampled.

6. Typical power consumption for these modes is measured at the nominal recommended VDD (see Table 4) and 105°C in the

mode described. This parameter is not 100% tested but is periodically sampled.

7. Power consumption for the 1267 MHz device is intentionally constrained via testing and sorting to assure low power

consumption for this device.

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