MPC7447 datasheet(11/60 Pages) FREESCALE

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MPC7448 RISC Microprocessor Hardware Specifications, Rev. 4

Freescale Semiconductor

Electrical and Thermal Characteristics

Table 4 provides the recommended operating conditions for the MPC7448 part numbers described by this

document; see Section 11.1, “Part Numbers Fully Addressed by This Document,” for more information.

See Section 9.2, “Power Supply Design and Sequencing” for power sequencing requirements.

Table 4. Recommended Operating Conditions1

Characteristic

Symbol

Recommended Value

Unit Notes

1000 MHz

1420 MHz

1600 MHz

1700 MHz

Min

Max

Min

Max

Min

Max

Min

Max

Core supply voltage

VDD

1.15 V ± 50 mV 1.2 V ± 50 mV 1.25 V ± 50 mV

1.3 V +20/

–50 mV

3, 4, 5

PLL supply voltage

AVDD

1.15 V ± 50 mV 1.2 V ± 50 mV 1.25 V ± 50 mV

1.3 V +20/

–50 mV

2, 3, 4

Processor

bus

supply

voltage

I/O Voltage Mode = 1.5 V

OVDD

1.5 V ± 5%

I/O Voltage Mode = 1.8 V

1.8 V ± 5%

I/O Voltage Mode = 2.5 V

2.5 V ± 5%

Input

voltage

Processor bus

Vin

GND

OVDD

GND

OVDD

GND

OVDD GND OVDD

JTAG signals

Vin

GND

OVDD

GND

OVDD

GND

OVDD GND OVDD

Die-junction temperature

105

•C

Notes:

1. These are the recommended and tested operating conditions.

2. This voltage is the input to the filter discussed in Section 9.2.2, “PLL Power Supply Filtering,” and not necessarily the voltage

at the AVDD pin, which may be reduced from VDD by the filter.

3. Some early devices supported voltage and frequency derating whereby VDD (and AVDD) could be reduced to reduce power

consumption. This feature has been superseded and is no longer supported. See Section 5.3, “Voltage and Frequency

Derating,” for more information.

4. Caution: Power sequencing requirements must be met; see Section 9.2, “Power Supply Design and Sequencing”.

5. Caution: See Section 9.2.3, “Transient Specifications” for information regarding transients on this power supply.

6. For information on extended temperature devices, see Section 11.2, “Part Numbers Not Fully Addressed by This Document.”

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