M0518 Datasheet, PDF (51/72 Pages) List of Unclassifed Manufacturers – 36/68 Kbytes flash, 8K bytes SRAM

NuMicro M0518 Series Datasheet
6.13 Serial Peripheral Interface (SPI)
6.13.1 Overview
The Serial Peripheral Interface (SPI) is a synchronous serial data communication protocol that
operates in full duplex mode. Devices communicate in Master/Slave mode with the 4-wire bi-
direction interface. The NuMicro M0518 series contains one set 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. This SPI controller can be configured as a
master or a slave device.
The SPI controller supports the variable bus clock function for special applications.
6.13.2 Features
 One set of SPI controller
 Supports Master or Slave mode operation
 Supports Dual I/O Transfer mode
 Configurable bit length of a transaction word from 8 to 32 bits
 Provides separate 8-layer depth transmit and receive FIFO buffers
 Supports MSB first or LSB first transfer sequence
 Supports the Byte Reorder function
 Supports Byte or Word Suspend mode
 Variable output bus clock frequency in Master mode
 Supports 3-wire, no slave select signal, bi-direction interface
Feb 08, 2017
Page 51 of 72
Revision 1.01