Datasheet

Product data sheet Rev. 1.0 — 26 February 2019 55 of 123

NXP Semiconductors

LPC55S6x

32-bit ARM Cortex-M33 microcontroller

7.25.4 High-speed SPI serial I/O controller

7.25.4.1 Features

• Master and slave operation.

• Maximum data rates of <tbd> Mbit/s at tbd V  VDD  tbd V in master and slave mode

for SPI functions.

• Data frames of 4 to 16 bits supported directly. Larger frames supported by software.

• The SPI function supports separate transmit and receive FIFOs with eight entries

each.

• Supports DMA transfers: SPIn transmit and receive functions can operated with the

system DMA controller.

• Data can be transmitted to a slave without the need to read incoming data. This can

be useful while setting up an SPI memory.

• Up to Four Slave Select input/outputs with selectable polarity and flexible usage.

7.26 SDIO/MMC interface

Secured digital input/output (SD/MMC and SDIO) card interface with DMA support. SDIO

with support for up to two cards. Supported card types are MMC, SDIO, and CE-ATA.

Supports SD2.0, and SDR25 (52MHz).

7.26.1 Features

• Secure Digital memory protocol commands.

• Secure Digital I/O protocol commands.

• Multimedia Card protocol commands.

• CE-ATA digital protocol commands.

• Two SD or MMC (4.4), CE-ATA (1.1), or eMMC (4.4) device.

• CRC 2.0 generation and error detection.

• SDIO interrupts in 1-bit and 4-bit modes.

• Block size of 1 to 65,535 bytes.

• Internal (bus mastering) DMA.

• Two FIFOs, TX and RX FIFO (FIFO depth = 32 and FIFO data width = 32 bits).

7.27 Standard counter/timers (CT32B0 to 4)

The LPC55S6x includes five general-purpose 32-bit timer/counters.

The timer/counter is designed to count cycles of the system derived clock or an

externally-supplied clock. It can optionally generate interrupts, generate timed DMA

requests, or perform other actions at specified timer values, based on four match

registers. Each timer/counter also includes two capture inputs to trap the timer value when

an input signal transitions, optionally generating an interrupt.

7.27.1 Features

• A 32-bit timer/counter with a programmable 32-bit prescaler.