ESP32-PICO datasheet(33/64 Pages) ESPRESSIF

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4 Peripherals

Feature List

The SDIO/SPI slave controller supports the following features:

• SPI, 1-bit SDIO, and 4-bit SDIO transfer modes over the full clock range from 0 to 50 MHz

• Configurable sampling and driving clock edge

• Special registers for direct access by host

• Interrupts to host for initiating data transfer

• Automatic loading of SDIO bus data and automatic discarding of padding data

• Block size of up to 512 bytes

• Interrupt vectors between the host and the slave, allowing both to interrupt each other

• Supports DMA for data transfer

For details, see ESP32 Technical Reference Manual > Chapter SDIO Slave Controller.

Pin Assignment

The pins for SDIO/SPI Slave Controller are multiplexed with GPIO2, GPIO4, GPIO6 ~ GPIO15 via IO MUX.

For more information about the pin assignment, see ESP32 Series Datasheet > Section Peripheral Pin

Configurations and ESP32 Technical Reference Manual > Chapter IO_MUX and GPIO Matrix.

4.2.12

TWAI® Controller

The Two-wire Automotive Interface (TWAI®) is a multi-master, multi-cast communication protocol designed for

automotive applications. The TWAI controller facilitates the communication based on this protocol.

Feature List

• Compatible with ISO 11898-1 protocol (CAN Specification 2.0)

• Standard frame format (11-bit ID) and extended frame format (29-bit ID)

• Bit rates:

– From 25 Kbit/s to 1 Mbit/s in chip revision v0.0/v1.0/v1.1

– From 12.5 Kbit/s to 1 Mbit/s in chip revision v3.0/v3.1

• Multiple modes of operation: Normal, Listen Only, and Self-Test

• 64-byte receive FIFO

• Special transmissions: single-shot transmissions and self reception

• Acceptance filter (single and dual filter modes)

• Error detection and handling: error counters, configurable error interrupt threshold, error code capture,

arbitration lost capture

For details, see ESP32 Technical Reference Manual > Chapter Two-wire Automotive Interface (TWAI).

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ESP32-PICO Series Datasheet v1.1

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