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MC7447A Arkusz danych(PDF) 4 Page - Freescale Semiconductor, Inc |
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MC7447A Arkusz danych(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 8 page 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 fcore 500 1000 500 1167 MHz 1, 2 VCO frequency fVCO 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 |
Podobny numer części - MC7447A |
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Podobny opis - MC7447A |
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