MC7447A Freescale Semiconductor, MC7447A Datasheet - Page 4

• Manufacturer Part Number: MC7447A
• Description: PowerPC microprocessor
• Manufacturer: Freescale Semiconductor

General Parameters
General Parameters
1.5.2
Table 8 provides the clock AC timing specifications for the MPC7447A part numbers described herein.
1.5.2.2
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.
4
At recommended operating conditions. See Table 4.
Processor frequency
VCO frequency
Notes:
1. Caution: The SYSCLK frequency and PLL_CFG[0:4] settings must be chosen such that the
2. Caution: If dynamic frequency switching (DFS) is enabled, the SYSCLK frequency and
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.
PLL_CFG[0:4] settings must be chosen such that the resulting processor frequency is greater
than or equal to the minimum core frequency.
AC Electrical Characteristics
Processor Bus AC Specifications
Characteristic
MPC7447A Part Number Specification for the MC7447AnnnnNx Series
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 8. Clock AC Timing Specifications
Symbol
f
f
Go to: www.freescale.com
VCO
core
1000
Min
500
1000 MHz
Maximum Processor Core
1000
2000
Max
Frequency
1000
Min
500
1167 MHz
1167
2333
Max
MHz
MHz
Unit
Notes
1, 2
1
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