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ESP32-C3-MINI-1-N4-A

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Espressif Systems RF and Wireless, 53-SMD Module. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ESP32-C3-MINI-1-N4-A

Espressif Systems · RF and Wireless · 53-SMD Module

ESP32-C3-MINI-1-N4-A from Espressif Systems, in a 53-SMD Module. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground pin of the module.
2 GND power_in Ground pin of the module.
3 3V3 power_in Power supply input; Table 6-2 gives VDD33 as 3.0 V min, 3.3 V typ, 3.6 V max.
4 NC unconnected Listed as NC (no connection) in the pin definition table.
5 IO2 bidirectional GPIO2 with ADC1_CH2 and FSPIQ functions; also a chip boot mode strapping pin, floating by default.
6 IO3 bidirectional GPIO3 with ADC1_CH3 function.
7 NC unconnected Listed as NC (no connection) in the pin definition table.
8 EN input Chip enable: high turns the chip on, low powers it off; do not leave this pin floating.
9 NC unconnected Listed as NC (no connection) in the pin definition table.
10 NC unconnected Listed as NC (no connection) in the pin definition table.
11 GND power_in Ground pin of the module.
12 IO0 bidirectional GPIO0 with ADC1_CH0 and XTAL_32K_P functions.
13 IO1 bidirectional GPIO1 with ADC1_CH1 and XTAL_32K_N functions.
14 GND power_in Ground pin of the module.
15 NC unconnected Listed as NC (no connection) in the pin definition table.
16 IO10 bidirectional GPIO10 with FSPICS0 function.
17 NC unconnected Listed as NC (no connection) in the pin definition table.
18 IO4 bidirectional GPIO4 with ADC1_CH4, FSPIHD and MTMS functions.
19 IO5 bidirectional GPIO5 with ADC2_CH0, FSPIWP and MTDI functions.
20 IO6 bidirectional GPIO6 with FSPICLK and MTCK functions.
21 IO7 bidirectional GPIO7 with FSPID and MTDO functions.
22 IO8 bidirectional GPIO8; also a strapping pin for chip boot mode and ROM message printing, floating by default.
23 IO9 bidirectional GPIO9; also a chip boot mode strapping pin, weak pull-up (logic 1) by default.
24 NC unconnected Listed as NC (no connection) in the pin definition table.
25 NC unconnected Listed as NC (no connection) in the pin definition table.
26 IO18 bidirectional GPIO18 with USB_D- function (USB Serial/JTAG).
27 IO19 bidirectional GPIO19 with USB_D+ function (USB Serial/JTAG).
28 NC unconnected Listed as NC (no connection) in the pin definition table.
29 NC unconnected Listed as NC (no connection) in the pin definition table.
30 RXD0 bidirectional GPIO20 with U0RXD function (UART0 receive, used for firmware download and log output).
31 TXD0 bidirectional GPIO21 with U0TXD function (UART0 transmit, used for firmware download and log output).
32 NC unconnected Listed as NC (no connection) in the pin definition table.
33 NC unconnected Listed as NC (no connection) in the pin definition table.
34 NC unconnected Listed as NC (no connection) in the pin definition table.
35 NC unconnected Listed as NC (no connection) in the pin definition table.
36 GND power_in Ground pin of the module.
37 GND power_in Ground pin of the module.
38 GND power_in Ground pin of the module.
39 GND power_in Ground pin of the module.
40 GND power_in Ground pin of the module.
41 GND power_in Ground pin of the module.
42 GND power_in Ground pin of the module.
43 GND power_in Ground pin of the module.
44 GND power_in Ground pin of the module.
45 GND power_in Ground pin of the module.
46 GND power_in Ground pin of the module.
47 GND power_in Ground pin of the module.
48 GND power_in Ground pin of the module.
49 GND power_in Ground thermal pad (labelled EPAD in the schematic); soldering it to the base board ground is optional but improves thermal performance, applied with a correct amount of solder paste.
50 GND power_in Ground pin of the module.
51 GND power_in Ground pin of the module.
52 GND power_in Ground pin of the module.
53 GND power_in Ground pin of the module.

Key specifications

Parameter Value
Manufacturer Espressif Systems
Package 53-SMD Module
Category RF and Wireless
Pins 53

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power supply voltage VDD33 -0.3 3.6 V 21
Power supply voltage VDD33 3 3.3 3.6 V 21
Current delivered by external power supply IVDD 0.5 A 21
Operating ambient temperature (85 °C version) TA -40 85 °C 85 °C version 21
Pin capacitance CIN 2 pF 21
High-level input current IIH 50 nA 21
Low-level input current IIL 50 nA 21
High-level source current IOH 40 mA VDD = 3.3 V, VOH >= 2.64 V, PAD_DRIVER = 3 21
Low-level sink current IOL 28 mA VDD = 3.3 V, VOL = 0.495 V, PAD_DRIVER = 3 21
Internal weak pull-up resistor RPU 45 kΩ 21
Internal weak pull-down resistor RPD 45 kΩ 21
Power supply voltage (1.8 V) VCC 1.65 1.8 2 V Flash, power supply voltage (1.8 V) 23
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V Flash, power supply voltage (3.3 V) 23
Maximum clock frequency FC 80 MHz Flash 23
Light-sleep current 130 µA VDD_SPI and Wi-Fi powered down, all GPIOs high-impedance 23
Deep-sleep current 5 µA RTC timer + RTC memory 23
Power-off current 1 µA CHIP_EN set to low level, chip powered off 23

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing THERMOPLASTIC HOUSING MATERIAL: THERMOPLASTIC, WHITE, UL 94V-0; 36
contacts COPPER ALLOY gold CONTACT MATERIAL: COPPER ALLOY, GOLD PLATED ALL OVER; 36
shell COPPER ALLOY gold SHELL MATERIAL: COPPER ALLOY, GOLD PLATED ALL OVER; 36

CAD (KiCad official)

  • Symbol: ESP32-C3-MINI-1-N4-A
  • Footprint: PCM_Espressif:ESP32-C3-MINI-1
  • 3D model: 53-SMD Module (KiCad packages3D, STEP)
  • 3D model files: esp32-c3-mini-1-n4-a-etched.step / esp32-c3-mini-1-n4-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-c3-mini-1-n4-a.step / esp32-c3-mini-1-n4-a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Espressif Systems datasheet (48 pp, sha256 de7361381348d82a, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF