4

MPC7447A Part Number Specification for the MC7447AnnnnNx Series

MOTOROLA

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

General Parameters

General Parameters

1.5.2

AC Electrical Characteristics

Table 8 provides the clock AC timing specifications for the MPC7447A part numbers described herein.

1.5.2.2

Processor Bus AC Specifications

Devices described by this part number specification conform to the processor bus AC timing specifications

provided in the MPC7447A RISC Microprocessor Hardware Specifications. Please refer to that document

for this information.

Table 8. Clock AC Timing Specifications

At recommended operating conditions. See Table 4.

Characteristic

Symbol

Maximum Processor Core

Frequency

Unit

Notes

1000 MHz

1167 MHz

Min

Max

Min

Max

Processor frequency

500

1000

500

1167

MHz

1, 2

VCO frequency

1000

2000

1000

2333

MHz

1

Notes:

1. Caution: The SYSCLK frequency and PLL_CFG[0:4] 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[0:4] signal description in MPC7447A RISC Microprocessor Hardware Specifications,

Section 1.9.1, “PLL Configuration,” for valid PLL_CFG[0:4] settings.

2. Caution: If dynamic frequency switching (DFS) is enabled, the SYSCLK frequency and

PLL_CFG[0:4] settings must be chosen such that the resulting processor frequency is greater

than or equal to the minimum core frequency.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com