MPC8640DEC datasheet(13/140 Pages) FREESCALE

13 / 140 page

MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Power Characteristics

The power dissipation for the dual core MPC8640D device is shown in Table 4.

Table 4. MPC8640D Power Dissipation (Dual Core)

Power Mode

Core Frequency

(MHz)

Platform

Frequency (MHz)

VDD_Coren,

VDD_PLAT

(Volts)

Junction

Temperature

Power

(Watts)

Notes

Typical

1250 MHz

500 MHz

1.05 V

65 oC

21.7

1, 2

Thermal

105 oC

27.3

1, 3

Maximum

1, 4

Typical

1000 MHz

500 MHz

1.05 V

65 oC

18.9

1, 2

Thermal

105 oC

23.8

1, 3

Maximum

1, 4

Typical

1067 MHz

533 MHz

0.95/1.05 V

65 oC

15.7

1, 2, 5

Thermal

105 oC

19.5

1, 3, 5

Maximum

1, 4, 5

Notes:

1. These values specify the power consumption at nominal voltage and apply to all valid processor bus frequencies and

configurations. The values do not include power dissipation for I/O supplies.

2. Typical power is an average value measured at the nominal recommended core voltage (VDD_Coren) and 65°C

junction temperature (see Table 2)while running the Dhrystone 2.1 benchmark and achieving 2.3 Dhrystone

MIPs/MHz with one core at 100% efficiency and the second core at 65% efficiency.

3. Thermal power is the average power measured at nominal core voltage (VDD_Coren) and maximum operating

junction temperature (see Table 2) while running the Dhrystone 2.1 benchmark and achieving 2.3 Dhrystone

MIPs/MHz on both cores and a typical workload on platform interfaces.

4. Maximum power is the maximum power measured at nominal core voltage (VDD_Coren) and maximum operating

junction temperature (see Table 2) while running a test which includes an entirely L1-cache-resident, contrived

sequence of instructions which keep all the execution units maximally busy on both cores.

5. These power numbers are for Part Number MC8640Dwxx1067NC and MC8640wxx1067NC only. VDD_Coren = 0.95

V and VDD_PLAT = 1.05 V.

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