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ATmega328P датащи(PDF) 166 Page - ATMEL Corporation |
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ATmega328P датащи(HTML) 166 Page - ATMEL Corporation |
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166 / 448 page ![]() 166 8161D–AVR–10/09 ATmega48PA/88PA/168PA/328P 18. SPI – Serial Peripheral Interface 18.1 Features • Full-duplex, Three-wire Synchronous Data Transfer • Master or Slave Operation • LSB First or MSB First Data Transfer • Seven Programmable Bit Rates • End of Transmission Interrupt Flag • Write Collision Flag Protection • Wake-up from Idle Mode • Double Speed (CK/2) Master SPI Mode 18.2 Overview The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the ATmega48PA/88PA/168PA/328P and peripheral devices or between several AVR devices. The USART can also be used in Master SPI mode, see “USART in SPI Mode” on page 204. The PRSPI bit in ”Minimizing Power Consumption” on page 42 must be written to zero to enable SPI module. Figure 18-1. SPI Block Diagram (1) Note: 1. Refer to Figure 1-1 on page 2, and Table 13-3 on page 82 for SPI pin placement. DIVIDER /2/4/8/16/32/64/128 |
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