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SC667201MMG3 数据表(PDF) 80 Page - Freescale Semiconductor, Inc |
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SC667201MMG3 数据表(HTML) 80 Page - Freescale Semiconductor, Inc |
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80 / 120 page  MPC5642A Microcontroller Data Sheet, Rev. 3.1 80 Freescale Semiconductor Electrical characteristics 3.14 Platform flash controller electrical characteristics 3.15 Flash memory electrical characteristics Table 31. APC, RWSC, WWSC settings vs. frequency of operation1 1 APC, RWSC and WWSC are fields in the flash memory BIUCR register used to specify wait states for address pipelining and read/write accesses. Illegal combinations exist—all entries must be taken from the same row. Max. Flash Operating Frequency (MHz)2 2 Max frequencies including 2% PLL FM. APC3 3 APC must be equal to RWSC. RWSC3 WWSC 20 MHz 0b000 0b000 0b01 61 MHz 0b001 0b001 0b01 90 MHz 0b010 0b010 0b01 123 MHz 0b011 0b011 0b01 153 MHz 0b100 0b100 0b01 Table 32. Flash program and erase specifications1 1 Typical program and erase times assume nominal supply values and operation at 25 °C. All times are subject to change pending device characterization. # Symbol C Parameter Value Unit Min Typ Initial max2 2 Initial factory condition: < 100 program/erase cycles, 25 °C, typical supply voltage, 80 MHz minimum system frequency. Max3 3 The maximum erase time occurs after the specified number of program/erase cycles. This maximum value is characterized but not guaranteed. 1Tdwprogram CC C Double Word (64 bits) Program Time — 30 — 500 µs 2Tpprogram CC C Page Program Time4 4 Page size is 128 bits (4 words) — 40 160 500 µs 3T16kpperase CC C 16 KB Block Pre-program and Erase Time — 250 1,000 5,000 ms 5T64kpperase CC C 64 KB Block Pre-program and Erase Time — 450 1,800 5,000 ms 6T128kpperase CC C 128 KB Block Pre-program and Erase Time — 800 2,600 7,500 ms 7T256kpperase CC C 256 KB Block Pre-program and Erase Time — 1,400 5,200 15,000 ms 8Tpsrt SR — Program suspend request rate5 5 Time between program suspend resume and the next program suspend request. 100 ——— s 9Tesrt SR — Erase suspend request rate 6 6 Time between erase suspend resume and the next erase suspend request. 10 ms |
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