M263 datasheet(319/398 Pages) NUVOTON

319 / 398 page

M261/M262/M263

Mar 25, 2020

Page 319 of 398

Rev 1.02

6.20

Quad Serial Peripheral Interface (QSPI)

6.20.1

Overview

The Quad Serial Peripheral Interface (QSPI) applies to synchronous serial data communication and

allows full duplex transfer. Devices communicate in Master/Slave mode with the 4-wire bi-direction

interface. The M261/M262/M263 series contains one QSPI controller 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.

The QSPI controller supports 2-bit Transfer mode to perform full-duplex 2-bit data transfer and also

supports Dual and Quad I/O Transfer mode and the controller supports the PDMA function to access

the data buffer.

6.20.2

Features

–

Supports Master or Slave mode operation

–

Supports 2-bit Transfer mode

–

Supports Dual and Quad I/O Transfer mode

–

Configurable bit length of a transaction word from 8 to 32-bit

–

Provides separate 8-level depth transmit and receive FIFO buffers

–

Supports MSB first or LSB first transfer sequence

–

Supports Byte Reorder function

–

Supports Byte or Word Suspend mode

–

Supports PDMA transfer

–

Supports 3-Wire, no slave selection signal, bi-direction interface

–

Supports one data channel half-duplex transfer

–

Supports receive-only mode

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