Description
Stamp-C3U is a cost-effective RISC-V minimal core board. It uses the Espressif ESP32-C3 as the main control chip, which features a RISC-V 32-bit single-core processor with a clock speed of up to 160 MHz. It comes with 400 KB SRAM + 4MB FLASH and integrates 2.4 GHz Wi-Fi. The core board supports security mechanisms such as secure boot, flash encryption, and digital signatures. Despite its compact size, it is highly functional and can meet diverse IoT application needs.
Features
- Supports multiple application forms (SMT, DIP, flying leads)
- Equipped with high-temperature plastic armor, supports SMT reflow temperature (230°C)
- Includes 5V->3.3V DC/DC circuit, GPIOx14
- Type-C interface
- Programmable RGB LED x1, reset button x1, button x1
- High-performance 3D antenna, providing stable and reliable wireless communication quality
- ESP32 minimal system board
- Development Platform
- Arduino IDE
- ESP-IDF
- PlatformIO
Includes
- 5 x Stamp-C3U
- 5 x High-temperature resistant stickers
Applications
Specifications
| Specification | Parameter |
|---|---|
| SoC | ESP32-C3@32-bit RISC-V single-core processor, 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 Interaction | Programmable physical button x 1, reset/debug button x 1, programmable RGB LED (SK6812) x 1 |
| USB Interface | USB Type-C x1 |
| Antenna Type | 2.4G 3D antenna |
| Module Peripheral Interface Resources | ADC, GPIO, SPI, UART, I2C, I2S, PWM, RMT, DMA, USB serial, TWAI |
| IO Interface x14 | G0, G1, G3, G4, G5, G6, G7, G8, G9, G10, G18, G19, G21, G22 |
| IO Interface Pitch | 2.54mm |
| Mounting Screw Spec | M2 x 4 countersunk hex key machine screw |
| Product Size | 34.0 x 20.0 x 4.6mm |
| Product Weight | 4.1g |
| Package Size | 138.0 x 93.0 x 7.0mm |
| Gross Weight | 22.8g |
Product Comparison
The difference between C3U and C3 is that Stamp-C3U has removed the USB download chip and instead uses the built-in USB Serial of ESP32-C3 for program downloading.
| Model | Main Control | IO Count | Button IO | USB Download Chip | USB Interface Function |
|---|---|---|---|---|---|
| Stamp-C3 | ESP32-C3 | 13 | G3 | CH9102 | Download / Serial |
| Stamp-C3U | ESP32-C3 | 14 | G9 | / | Download / JTAG / CDC Serial |