The core board uses an ESP32-C3FN4 chip and a built-in stacked 4 MB flash ESP32-C3-MINI module, ESP32-C3-MINI-1 is a general-purpose Wi-Fi and low-power Bluetooth (BT LE) module with a small size and rich peripheral interfaces, which can be used in the fields of smart home, industrial automation, and medical electronics. On top of a rich set of peripherals, the acceleration for neural network computing and signal processing, workloads provided by the SoC make the modules an ideal choice for a wide variety of application scenarios related to AI and Artificial Intelligence of Things (IoT), such as wake word detection, speech commands recognition, face detection and recognition, smart home, smart appliances, smart control panel, smart speaker, etc.

Specifications:

• Module Model: ESP32-C3-MINI-1
• Built-in chip model: ESP32-C3FN4
• Built-in SRAM: 400 KB
• Built-in ROM: 384 KB4MB
• External Flash: 4MB
• ESP32-C3 Hardware Resources
• Wi-Fi:
  
  • Supports the IEEE 802.11 blg/n protocol-
  • Supports 20 MHz and 40 MHz bandwidth in 2.4 GHz band.
  • Supports 1T1R mode with data rates up to 150 Mbps
  • Wireless Multimedia (WMM)
  • Frame aggregation (TX/RX A-MPDU, TX/RX A-MSDu)
  • Immediate BlockACK
  • Fragmentation and defragmentation
  • Transmit opportunity (TXOP)
  • Beacon automatic monitoring (hardware TSF)
  • 4 x virtual Wi-Fi interfaces
  • It also supports Infrastructure BsS Station
  • 802.11 mc FTM support for external power amplifiers
• Bluetooth
  
  • Bluetooth Low Power (BT LE): BT 5, BT mesh
  • High power mode (18 dBm)
  • Rate support 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps-Advertising Extensions
  • Multiple Advertisement Sets
  • Channel Selection Algorithm #2
  • Wi-Fi and Bluetooth coexist and share the same antenna. 
• CPU and Storage
  
  • 32-bit RISC-V single-core processor up to 160 MHz
  • CoreMarkR Score.
  • Single-core 160 MHz:407.22
  • CoreMark; 2.55
  • coreMark/MHz
  • 384 KB ROM
  • 400 KB SRAM (16 KB dedicated to cache)
  • 8KB RTC SRAM
  • Embedded flash - SPI, Dual SPI, Quad SPI, QPI interfaces for multiple external flashes
  • Accelerated flash access via cache
  • Supports flash in-circuit programming (ICP)
• Advanced peripheral interfaces and sensors
  
  • 22 × GPIO ports
  • Digital interface: 3 × SPI
  • 3× SPI
  • 2 × UART
  • 1×l2C
  • 1×l2S
  • Infrared transceiver, 2 transmit channels and 2 receive channels
  • LED PWM Controller, up to 6 channels
  • Full Speed USB Serial/JTAG Controller
  • General Purpose DMA controller (GDMA for short), 3 receive channels and 3 transmit channels - 1 × TWAIR controller, IS011898-1 compliant (CAN specification 2.0)
• Analog Interface
  
  • 2 × 12-bit SAR analog/digital converter, up to 6 channels
  • 1 × temperature sensor
  • Timer.
  • 2 × 54-bit general-purpose timers
  • 3 × watchdog timer
  • 1 × 52-bit system timer
• Low power management
  
  • Power management unit, four power consumption mode safety mechanisms
  • Secure Boot
  • Flash encryption
  • 4096-bit OTP, up to 1792 bits available
  • Encryption Hardware Accelerator.
  • AES-128/256 (FIPS PUB 197)
    Access Rights Management
  • SHA gas pedal (FIPS PUB 180-4)
  • RSA gas pedal
  • Random Number Generator (RNG)
  • HMAC-Digital Signature