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M68ICS08GR データシート(PDF) 300 Page - Freescale Semiconductor, Inc |
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M68ICS08GR データシート(HTML) 300 Page - Freescale Semiconductor, Inc |
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300 / 408 page  Serial Peripheral Interface (SPI) Technical Data MC68HC908GR8 — Rev 4.0 300 Serial Peripheral Interface (SPI) MOTOROLA Figure 20-2. SPI Module Block Diagram The SPI module allows full-duplex, synchronous, serial communication between the MCU and peripheral devices, including other MCUs. Software can poll the SPI status flags or SPI operation can be interrupt- driven. If a port bit is configured for input, then an internal pullup device may be enabled for that port bit. See Port D Input Pullup Enable Register. TRANSMITTER CPU INTERRUPT REQUEST RESERVED RECEIVER/ERROR CPU INTERRUPT REQUEST 76543210 SPR1 SPMSTR TRANSMIT DATA REGISTER SHIFT REGISTER SPR0 CGMOUT ÷ 2 CLOCK SELECT ÷ 2 CLOCK DIVIDER ÷ 8 ÷ 32 ÷ 128 CLOCK LOGIC CPHA CPOL SPI SPRIE DMAS SPE SPWOM SPRF SPTE OVRF RESERVED M S PIN CONTROL LOGIC RECEIVE DATA REGISTER SPTIE SPE INTERNAL BUS FROM SIM MODFEN ERRIE CONTROL MODF SPMSTR MOSI MISO SPSCK SS Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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