Data Sheet

3 Pin Definitions
Table 2 – cont’d from previous page
Name No. Type
1
Function
IO27 17 I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV
IO14 18 I/O
GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK,
HS2_CLK, SD_CLK, EMAC_TXD2
IO12 19 I/O
GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ,
HS2_DATA2, SD_DATA2, EMAC_TXD3
IO13 20 I/O
GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID,
HS2_DATA3, SD_DATA3, EMAC_RX_ER
IO15 21 I/O
GPIO15, ADC2_CH3, TOUCH3, RTC_GPIO13, MTDO, HSPICS0,
HS2_CMD, SD_CMD, EMAC_RXD3
IO2 22 I/O
GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0,
SD_DATA0
IO0 23 I/O
GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1,
EMAC_TX_CLK
IO4 24 I/O
GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1,
SD_DATA1, EMAC_TX_ER
NC 25 - -
IO20 26 I/O GPIO20
IO7 27 I/O GPIO7, HS1_DATA0, U2RTS, SD_DATA0
IO8 28 I/O GPIO8, HS1_DATA1, U2CTS, SD_DATA1
IO5 29 I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
RXD0 30 I/O GPIO3, U0RXD, CLK_OUT2
TXD0 31 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
NC 32 - -
IO19 33 I/O GPIO19, VSPIQ, U0CTS, EMAC_TXD0
IO22 34 I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1
IO21 35 I/O GPIO21, VSPIHD, EMAC_TX_EN
*
P: power supply; I: input; O: output.
*
Pins CMD/IO11 and CLK/IO6 are used for connecting the embedded flash, and pins SD2/IO9 and SD3/IO10 are
used for connecting embedded PSRAM. These pins are not led out.
3.3 Strapping Pins
Note:
The content below is excerpted from Section Strapping Pins in ESP32 Series Datasheet. For the strapping pin mapping
between the chip and modules, please refer to Chapter 5 Module Schematics.
ESP32-PICO-V3-02 has five strapping pins:
• MTDI
• GPIO0
• GPIO2
• MTDO
Espressif Systems 11
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ESP32-PICO-MINI-02 & PICO-MINI-02U Datasheet v1.0