Seeed Studio XIAO ESP32C3 – Compact IoT Dev Board Powered by RISC-V The XIAO ESP32C3 is an ultra-mini development board built around the Espressif ESP32-C3 dual-mode WiFi/Bluetooth chip, featuring a high-performance 32-bit RISC-V CPU. With robust RF capabilities, it supports IEEE 802.11 b/g/n WiFi and Bluetooth 5 (BLE) for reliable wireless communication. Comes with an external antenna to boost signal strength in demanding IoT environments. Tiny But Mighty Its elegant form factor and single-sided SMT design make it perfect for space-constrained applications. Interface Highlights 11 digital I/O pins for PWM control 3 analog I/O pins for ADC readings Supports UART, I2C, SPI, and other serial interfaces Onboard reset button and bootloader mode button for easy flashing Feature Powerful Core Processor Powered by the ESP32-C3, a 32-bit RISC-V single-core CPU running up to 160 MHz, delivering efficient performance for IoT applications Robust Wi-Fi Subsystem Fully supports IEEE 802.11 b/g/n with Station, SoftAP, SoftAP + Station, and promiscuous mode for versatile connectivity Advanced Bluetooth LE Compatible with Bluetooth 5 and Bluetooth Mesh, enabling reliable low-power communication Ultra-Low Power Design Achieves 43μA deep sleep current, perfect for energy-sensitive projects Enhanced RF Performance Comes with an external antenna for improved signal strength in wireless environments Built-in Battery Management Integrated charging/discharge chip supports lithium battery power for mobile scenarios Rich On-Chip Resources Includes 400KB SRAM and 4MB onboard flash, ensuring smooth multitasking and storage Thumb-Sized Form Factor Measures just 21 × 17.8 mm, keeping the classic XIAO series footprint — ideal for wearables and compact devices Reliable Security Features Built-in crypto engine supports AES-128/256, Hash, RSA, HMAC, digital signature, and secure boot Versatile I/O Interfaces 1× I2C 1× SPI 2× UART 11× GPIO (PWM) 4× ADC 1× JTAG bonding pad Sleek Hardware Design Single-sided surface-mount layout for streamlined integration in PCB designs Specification Parameter Description Processor ESP32-C3 SoC RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz Wireless Complete 2.4GHz Wi-Fi subsystem Bluetooth 5.0/ Bluetooth mesh On-chip Memory 400KB SRAM & 4MB Flash Interface 1x UART, 1x IIC, 1x SPI,11x GPIO(PWM), 4x ADC 1x Reset button, 1x Boot button Dimensions 21 x 17.5mm Power Circuit operating voltage: 3.3V@200mA Charging current: 350mA/100mA Input voltage (VIN): 5V Deep Sleep Power Consumption Deep Sleep Model: >44 μA Wi-Fi Enabled Power Consumption Active Model:
