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ATmega324P Datasheet(PDF) 167 Page - ATMEL Corporation |
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ATmega324P Datasheet(HTML) 167 Page - ATMEL Corporation |
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167 / 377 page  167 7674F–AVR–09/09 ATmega164P/324P/644P Figure 16-3. SPI Transfer Format with CPHA = 0 Figure 16-4. SPI Transfer Format with CPHA = 1 Table 16-2. SPI Modes SPI Mode Conditions Leading Edge Trailing Edge 0 CPOL=0, CPHA=0 Sample (Rising) Setup (Falling) 1 CPOL=0, CPHA=1 Setup (Rising) Sample (Falling) 2 CPOL=1, CPHA=0 Sample (Falling) Setup (Rising) 3 CPOL=1, CPHA=1 Setup (Falling) Sample (Rising) Bit 1 Bit 6 LSB MSB SCK (CPOL = 0) mode 0 SAMPLE I MOSI/MISO CHANGE 0 MOSI PIN CHANGE 0 MISO PIN SCK (CPOL = 1) mode 2 SS MSB LSB Bit 6 Bit 1 Bit 5 Bit 2 Bit 4 Bit 3 Bit 3 Bit 4 Bit 2 Bit 5 MSB first (DORD = 0) LSB first (DORD = 1) SCK (CPOL = 0) mode 1 SAMPLE I MOSI/MISO CHANGE 0 MOSI PIN CHANGE 0 MISO PIN SCK (CPOL = 1) mode 3 SS MSB LSB Bit 6 Bit 1 Bit 5 Bit 2 Bit 4 Bit 3 Bit 3 Bit 4 Bit 2 Bit 5 Bit 1 Bit 6 LSB MSB MSB first (DORD = 0) LSB first (DORD = 1) |
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