ATXMEGA32A4-CU 查看數據表（PDF） - Atmel Corporation

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ATXMEGA32A4-CU

8/16-bit AVR® XMEGA A4 Microcontroller

Atmel Corporation 

XMEGA A4

21. SPI - Serial Peripheral Interface

21.1 Features

21.2 Overview

• Two Identical SPI peripherals

• 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

The Serial Peripheral Interface (SPI) allows high-speed full-duplex, synchronous data transfer

between different devices. Devices can communicate using a master-slave scheme, and data is

transferred both to and from the devices simultaneously.

PORTC and PORTD each has one SPI. Notation of these peripherals are SPIC and SPID,

respectively.

37

8069O–AVR–08/10

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