M052LDN Datasheet, PDF (50/86 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller

M051 DN/DE
6.13 Serial Peripheral Interface (SPI)
6.13.1 Overview
The Serial Peripheral Interface (SPI) applies to synchronous serial data communication and
allows full-duplex transfer. Devices communicate in Master/Slave mode with 4-wire bi-direction
interface. The NuMicro^® M051 DN/DE series contains up to two sets of SPI controllers performing
a serial-to-parallel conversion on data received from a peripheral device, and a parallel-to-serial
conversion on data transmitted to a peripheral device. Each SPI controller can be configured as a
master or a slave device.
6.13.2 Features
 Up to two sets of SPI controllers
 Supports Master or Slave mode operation
 Configurable transfer bit length
 Provides FIFO buffers
 Supports MSB or LSB first transfer
 Supports byte reorder function
 Supports byte or word suspend mode
 Supports Slave 3-wire mode
 SPI bus clock rate can be configured to equal the system clock rate
Oct. 05, 2015
Page 50 of 86
Rev 1.03