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DSP56857 датащи(PDF) 37 Page - Freescale Semiconductor, Inc |
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DSP56857 датащи(HTML) 37 Page - Freescale Semiconductor, Inc |
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37 / 662 page ![]() 5685x Family Description 5685X Overview, Rev. 4 Freescale Semiconductor 1-5 1.2.1.2 The 56854 • Supports program execution from either internal or external memories • Provides two external dedicated interrupt lines • Provides up to 41-General Purpose Input/Output (GPIO) lines, depending on peripheral configuration • Includes 16K words of Program RAM • Includes 16K words of Data RAM • Includes 1K words of Boot ROM • Provides a full set of standard programmable peripherals including: — eight-bit Host Interface (HI8) — one Enhanced Synchronous Serial Interface (ESSI) — one Serial Peripheral Interface (SPI) — two Serial Communications Interfaces (SCIs) — one Quad Timer (TMR) — one, 6-channel Direct Memory Access (DMA) The HI8, ESSI, SPI, SCI, four chip selects and TMR can be used as General Purpose Input/Outputs (GPIOs) if its primary function is not required. 1.2.1.3 The 56855 • Supports program execution from either internal or external memories • Provides two external dedicated interrupt lines • Provides up to 18-General Purpose Input/Output (GPIO) lines, depending on peripheral configuration • Includes 24K words of Program RAM • Includes 24K words of Data RAM • Includes 1K of Boot ROM • Provides a full set of standard programmable peripherals including: — one Enhanced Synchronous Serial Interface (ESSI) — two Serial Communications Interfaces (SCI) — one Quad Timer (TMR) — one, 6-channel Direct Memory Access (DMA) The ESSI, SCI I/O, four chip selects and quad timer can be used as General Purpose Input/Outputs when its primary function is not required. |
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