User's Manual

1 Overview

Table 12 – cont’d from previous page

Name No. Type Function

IO22 33 I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1

IO21 34 I/O GPIO21, VSPIHD, EMAC_TX_EN

RXD0 35 I/O GPIO3, U0RXD, CLK_OUT2

TXD0 36 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2

NC 37 - No connect

Pins GPIO6, GPIO7, GPIO8, GPIO11, GPIO16, and GPIO17 on the ESP32-U4WDH chip are connected to the

SPI flash integrated on the module and are not led out.

For peripheral pin configurations, please refer to ESP32 Series Datasheet.

Espressif Systems 6 ESP32-MINI-1 User Manual (Preliminary v0.1)