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MCF52254CAF66 bảng dữ liệu(PDF) 9 Page - Freescale Semiconductor, Inc |
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MCF52254CAF66 bảng dữ liệu(HTML) 9 Page - Freescale Semiconductor, Inc |
9 / 50 page Family Configurations MCF52259 ColdFire Microcontroller, Rev. 0 Freescale Semiconductor 9 —2n (n ≤ 0 ≤ 15) low-power divider for extremely low frequency operation • Interrupt controller — Uniquely programmable vectors for all interrupt sources — Fully programmable level and priority for all peripheral interrupt sources — Seven external interrupt signals with fixed level and priority — Unique vector number for each interrupt source — Ability to mask any individual interrupt source or all interrupt sources (global mask-all) — Support for hardware and software interrupt acknowledge (IACK) cycles — Combinatorial path to provide wake-up from low-power modes • DMA controller — Four fully programmable channels — Dual-address transfer support with 8-, 16-, and 32-bit data capability, along with support for 16-byte (4 ×32-bit) burst transfers — Source/destination address pointers that can increment or remain constant — 24-bit byte transfer counter per channel — Auto-alignment transfers supported for efficient block movement — Bursting and cycle-steal support — Software-programmable DMA requests for the UARTs (3) and 32-bit timers (4) — Channel linking support • Reset — Separate reset in and reset out signals — Seven sources of reset: – Power-on reset (POR) – External –Software – Watchdog – Loss of clock / loss of lock – Low-voltage detection (LVD) –JTAG — Status flag indication of source of last reset • Chip configuration module (CCM) — System configuration during reset — Selects one of six clock modes — Configures output pad drive strength — Unique part identification number and part revision number • General purpose I/O interface — Up to 56 bits of general purpose I/O on 100-pin package — Up to 96 bits of general purpose I/O on 144-pin package — Bit manipulation supported via set/clear functions — Programmable drive strengths — Unused peripheral pins may be used as extra GPIO • JTAG support for system level board testing |
Số phần tương tự - MCF52254CAF66 |
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Mô tả tương tự - MCF52254CAF66 |
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