参数资料
型号: R5F6461ELFP
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 48 MHz, MICROCONTROLLER, PQFP80
封装: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数: 37/72页
文件大小: 839K
代理商: R5F6461ELFP
42
XMEGA A3U [DATASHEET]
Atmel-8386D-AVR-ATxmega64A3U-128A3U-192A3U-256A3U–03/2014
23.
SPI – Serial Peripheral Interface
23.1
Features
Three Identical SPI peripherals
Full-duplex, three-wire synchronous data transfer
Master or slave operation
Lsb first or msb first data transfer
Eight programmable bit rates
Interrupt flag at the end of transmission
Write collision flag to indicate data collision
Wake up from idle sleep mode
Double speed master mode
23.2
Overview
The Serial Peripheral Interface (SPI) is a high-speed synchronous data transfer interface using three or four pins. It
allows fast communication between an Atmel AVR XMEGA device and peripheral devices or between several
microcontrollers. The SPI supports full-duplex communication.
A device connected to the bus must act as a master or slave. The master initiates and controls all data transactions.
PORTC, PORTD, and PORTE each has one SPI. Notation of these peripherals are SPIC, SPID, and SPIE respectively.
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