Data Sheet

3 Pin Definitions
GND
Pin 4
Pin 29
Pin 8
Pin 10
Pin 12
GND
Pin 50
GND
Pin 2
Pin 20
Pin 9
Pin 13
GND
Pin 16
I37
Pin 22
IO32
Pin 21
Pin 18
Pin 51
GND
Pin 24
Pin 33
Pin 30
Pin 32
Pin 34
Pin 36 Pin 40
Pin 49
GND
GND
Pin 47 Pin 44
GND
GND
GND
GND
GND
Pin 45
Pin 1
EN
Pin 7
I34
I39
I38
IO33
Pin 3
Pin 6
3V3
Pin 5
IO13
Pin 11
Pin 15
Pin 53
GND
GND
IO14
I35
Pin 52
GND
IO15
IO27
IO12
Pin 14
IO26
IO2
Pin 17
IO20
NC
IO5
IO0
IO7
IO8
Pin 23 Pin 19
Pin 25
IO22
RXD0
Pin 26
GND
TXD0
NC
Pin 27
IO19
GND
Pin 31
GND
Pin 28
GND GND
Pin 35
GND GND GND GND
Pin 38
GND GND
Pin 37 Pin 39
Pin 41
Pin 42
Pin 43
GND
I36
Pin 46 Pin 48
GND
IO25
IO4
IO21
GND GND
Figure 4: ESP32PICOMINI02U Pin Layout (Top View)
3.2 Pin Description
ESP32-PICO-MINI-02 and ESP32-PICO-MINI-02U each has 53 pins. See pin definitions in Table 2.
For peripheral pin configurations, please refer to ESP32 Series Datasheet.
Table 2: Pin Definitions
Name No. Type
1
Function
GND 1, 2, 11, 14, 36-53 P Ground
3V3 3 P Power supply
I36 4 I GPIO36, ADC1_CH0, RTC_GPIO0
I37 5 I GPIO37, ADC1_CH1, RTC_GPIO1
I38 6 I GPIO38, ADC1_CH2, RTC_GPIO2
I39 7 I GPIO39, ADC1_CH3, RTC_GPIO3
EN 8 I
High: On; enables the chip
Low: Off; the chip powers off
Note: Do not leave EN pin floating.
I34 9 I GPIO34, ADC1_CH6, RTC_GPIO4
I35 10 I GPIO35, ADC1_CH7, RTC_GPIO5
IO32 12 I/O
GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4,
TOUCH9, RTC_GPIO9
IO33 13 I/O
GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output),
ADC1_CH5, TOUCH8, RTC_GPIO8
IO25 15 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0
IO26 16 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
Cont’d on next page
Espressif Systems 10
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ESP32-PICO-MINI-02 & PICO-MINI-02U Datasheet v1.0