Description

Stamp-C3 is a cost-effective, minimal RISC-V core board powered by the ESP32-C3 SoC from Espressif. It integrates a 32-bit single-core RISC-V processor running at up to 160 MHz, 400 KB SRAM, and 4 MB FLASH, together with 2.4 GHz Wi-Fi connectivity. The board supports secure boot, Flash encryption, digital signature and other security features. Despite its tiny size, it delivers robust performance to meet diverse IoT application requirements.

Features

• Supports multiple mounting methods (SMT, DIP, flying leads)
• Equipped with a high-temperature plastic shield, compatible with SMT reflow (230 °C)
• On-board 5 V → 3.3 V DC/DC, 13 × GPIOs
• Type-C port
• 1 × programmable RGB LED, 1 × reset button, 1 × user button
• High-performance 3D antenna for stable, reliable wireless communication
• Smallest ESP32 system board
• Development Platform
  • Arduino IDE
  • ESP-IDF
  • PlatformIO

Includes

• 5 × Stamp-C3
• 5 × High-temperature Labels

Applications

Specifications

Specification	Parameter
SoC	ESP32-C3@32-bit RISC-V Single-Core Processor, Main Frequency up to 160MHz
Flash	4MB
SRAM	400KB
ROM	384KB
RTC SRAM	8KB
Wi-Fi	2.4 GHz Wi-Fi (supports 20/40MHz bandwidth, 802.11 b/g/n, up to 150Mbps)
Input Voltage	5V@500mA
Human-Machine Interaction	Programmable Physical Button x 1, Reset/Debug Button x 1, Programmable RGB LED (SK6812) x 1
USB Interface	USB Type-C x 1
Antenna Type	2.4G 3D Antenna
Module Peripheral Interface Resources	ADC, GPIO, SPI, UART, I2C, I2S, PWM, RMT, DMA, USB Serial, TWAI
IO Interfaces x13	G21, G20, G9, G18, G19, G1, G0, G10, G8, G7, G6, G5, G4
IO Interface Pitch	2.54mm
Mounting Screw Specification	M2 x 4 Countersunk Hex Socket Machine Screw
Product Size	34.0 x 20.0 x 4.6mm
Single Product Weight	4.1g
Package Size	138.0 x 93.0 x 5.6mm
Gross Weight	23.3g

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