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ESP32-C3-MINI-1-N4

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Espressif Systems RF Modules, ESP32-C3-MINI-1. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ESP32-C3-MINI-1-N4

Espressif Systems · RF Modules · ESP32-C3-MINI-1

ESP32-C3-MINI-1-N4 from Espressif Systems, in a ESP32-C3-MINI-1. 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 Module power supply input; the recommended supply range is 3.0 V to 3.6 V with 3.3 V typical (VDD33), and the external power supply must deliver at least 0.5 A.
4 NC unconnected Not connected.
5 IO2 bidirectional GPIO2 with ADC1_CH2 and FSPIQ functions; it is a chip boot mode strapping pin and is floating by default.
6 IO3 bidirectional GPIO3 with ADC1_CH3 analog input function.
7 NC unconnected Not connected.
8 EN input High enables the chip and low powers it off; the pin must not be left floating.
9 NC unconnected Not connected.
10 NC unconnected Not connected.
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 Not connected.
16 IO10 bidirectional GPIO10 with FSPICS0 function.
17 NC unconnected Not connected.
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; a chip boot mode strapping pin that also controls ROM message printing, and is floating by default.
23 IO9 bidirectional GPIO9; a chip boot mode strapping pin with a weak internal pull-up that reads logic 1 by default.
24 NC unconnected Not connected.
25 NC unconnected Not connected.
26 IO18 bidirectional GPIO18 with USB_D- function for the USB Serial/JTAG controller.
27 IO19 bidirectional GPIO19 with USB_D+ function for the USB Serial/JTAG controller.
28 NC unconnected Not connected.
29 NC unconnected Not connected.
30 RXD0 bidirectional GPIO20 with U0RXD function, the UART0 receive signal.
31 TXD0 bidirectional GPIO21 with U0TXD function, the UART0 transmit signal.
32 NC unconnected Not connected.
33 NC unconnected Not connected.
34 NC unconnected Not connected.
35 NC unconnected Not connected.
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 pin; this is the EPAD thermal pad, and soldering it to the base board ground is optional but improves thermal performance.
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 ESP32-C3-MINI-1
Category IoT/Communication Modules
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 IV DD 0.5 A 21
Operating ambient temperature TA -40 85 °C 85 °C version 21
Low-level input voltage VIL -0.3 V 3.3 V, 25 °C 21
High-level input current IIH 50 nA 3.3 V, 25 °C 21
Low-level input current IIL 50 nA 3.3 V, 25 °C 21
Chip reset voltage VIL_nRST -0.3 V CHIP_EN voltage is within the specified range 22
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V 23
Maximum clock frequency FC 80 MHz 23
Program/erase cycles 100000 cycles 23
Data retention time TRET 20 years 23
Page program time TPP 0.8 5 ms 23
Sector erase time (4 KB) TSE 70 500 ms 23
Block erase time (32 KB) TBE1 0.2 2 s 23
Block erase time (64 KB) TBE2 0.3 3 s 23
Chip erase time (32 Mb) TCE 20 60 s 24
Center frequency range of operating channel (Wi-Fi) 2412 2484 MHz 25
Center frequency range of operating channel (Bluetooth LE) 2402 2480 MHz 27
RF transmit power range -24 20 dBm Bluetooth LE 27

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