Espressif Systems ESP32C3 Ultra-Low Power SoCs

Espressif Systems ESP32C3 Ultra-Low Power SoCs are an ultra-low-power and highly-integrated MCU-based SoC solution that supports 2.4GHz Wi-Fi^® and BLUETOOTH^® Low Energy (Bluetooth LE). The ESP32C3 contains a complete Wi-Fi subsystem that complies with IEEE 802.11b/g/n protocol and supports Station mode, SoftAP mode, SoftAP + Station mode, and promiscuous mode. The Bluetooth LE subsystem supports features of Bluetooth 5 and Bluetooth mesh.

The Espressif ESP32C3 Ultra-Low Power SoCs offer state-of-the-art power and RF performance with a 32-bit RISC-V single-core processor with a four-stage pipeline that operates at up to 160MHz. The device features 400KB of SRAM (16KB for cache) and 384KB of ROM on the chip, and SPI, Dual SPI, Quad SPI, and QPI interfaces that allow connection to external flash.

The ESP32C3 Ultra-Low Power SoCs deliver reliable security features ensured by cryptographic hardware accelerators that support AES-128/256, Hash, RSA, HMAC, digital signature, and secure boot. These security features are further enabled by a random number generator, permission control on accessing internal memory, external memory, and peripherals, and external memory encryption and decryption.

A rich set of peripheral interfaces and GPIOs, make the ESP32C3 ideal for various scenarios and complex applications.

Features

Wi-Fi^®
- IEEE 802.11 b/g/n-compliant
- Supports 20MHz, 40MHz bandwidth in 2.4GHz band
- 1T1R mode with data rate up to 150Mbps
- Wi-Fi Multimedia (WMM)
- TX/RX A-MPDU, TX/RX A-MSDU
- Immediate Block ACK
- Fragmentation and defragmentation
- Transmit opportunity (TXOP)
- Automatic Beacon monitoring (hardware TSF)
- 4 × virtual Wi-Fi interfaces
- Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode
- Antenna diversity
- 802.11mc FTM
BLUETOOTH^®
- Bluetooth LE: Bluetooth 5, Bluetooth mesh
- Speed of 125Kbps, 500Kbps, 1Mbps, or 2Mbps
- Advertising extensions
- Multiple advertisement sets
- Channel selection algorithm #2
CPU & Memory
- 32-bit RISC-V single-core processor, up to 160MHz
- 384KB ROM
- 400KB SRAM (16KB for cache)
- 8KB SRAM in RTC
- Embedded flash
- SHA Accelerator (FIPS PUB 180-4)
- RSA Accelerator
- Random Number Generator (RNG)
- SPI, Dual SPI, Quad SPI, and QPI interfaces that allow connection to multiple external flash

Advanced Peripheral Interfaces
- 22 × programmable GPIOs
- Digital interfaces:
  - 3 × SPI
  - 2 × UART
  - 1 × I²C
  - 1 x I²S
- Remote control peripheral with 2 transmit channels and 2 receive channels
- LED PWM controller with up to 6 channels
- Full speed USB Serial/JTAG controller
- General DMA controller (GDMA) with 3 transmit channels and 3 receive channels
- 1 x TWAI controller (compatible with ISO 11898-1)
- Analog interfaces
  - 2 x 12-bit SAR ADCs up to 6 channels
  - 1 x temperature sensor
- Timers
  - 2 x 54-bit general purpose timer
  - 3 x watchdog timers
Low Power Management
- Power Management Unit with five power modes
Security
- Secure boot
- Flash encryption
- 4096-bit OTP, up to 1792 bits for users
- Cryptographic hardware acceleration:
  - AES-128/256 (FIPS PUB 197)
- Permission Control
- HMAC
- Digital signature

Applications

Smart home
- Light control
- Smart button
- Smart plug
- Indoor positioning
Industrial automation
- Industrial robot
- Mesh network
- Human Machine Interface (HMI)
- Industrial field bus
Health care
- Health monitor
- Baby monitor
Consumer electronics
- Smart watch and bracelet
- Over-the-top (OTT) devices
- Wi-Fi^® & BLUETOOTH^® speaker
- Logger toys and proximity sensing toys

Smart agriculture
- Smart greenhouse
- Smart irrigation
- Agriculture robot
Retail and catering
- POS machines
- Service robot
Audio device
- Internet music players
- Live streaming devices
- Internet radio players
Generic low-power IoT sensor hubs
Generic low-power IoT data loggers