Espressif Systems ESP32-C6 Ultra-Low-Power System-on-Chips (SoCs)

Espressif Systems ESP32-C6 Ultra-Low-Power System-on-Chips (SoCs) support Wi-Fi 6 in the 2.4GHz band, BLUETOOTH® 5, Zigbee® 3.0, and Thread 1.3. The SoCs consist of a high-performance (HP) 32-bit RISC-V processor, a low-power (LP) 32-bit RISC-V processor, a wireless baseband/MAC (Wi-Fi, BLUETOOTH LE, and 802.15.4), RF module, and numerous peripherals. Wi-Fi, BLUETOOTH, and 802.15.4 coexist with each other and share the same antenna.

Features

Wi-Fi
- 1T1R in 2.4GHz band
- 2412MHz to 2484MHz operating frequency range
- IEEE 802.11ax-compliant
  - 20MHz-only non-AP mode
  - MCS0 to MCS9
  - Uplink and downlink OFDMA, especially suitable for simultaneous connections in high-density environments
  - Downlink MU-MIMO (multi-user, multiple input, multiple output) to increase network capacity
  - Beamformee that improves signal quality
  - Channel quality indication (CQI)
  - DCM (dual carrier modulation) to improve link robustness
  - Spatial reuse to maximize parallel transmissions
  - Target wake time (TWT) that optimizes power-saving mechanisms
- Fully compatible with IEEE 802.11b/g/n protocol
  - 20MHz and 40MHz bandwidth
  - 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)
  - 4x virtual Wi-Fi interfaces
  - Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode (Note: when ESP32-C6 scans in Station mode, the SoftAP channel will change along with the Station channel)
  - Antenna diversity
  - 802.11mc FTM
BLUETOOTH
- BLUETOOTH LE, BLUETOOTH 5.3 certified
- BLUETOOTH mesh
- High power mode (20dBm)
- 125Kbps, 500Kbps, 1Mbps, and 2Mbps speeds
- Advertising extensions
- Multiple advertisement sets
- Channel selection algorithm #2
- LE power control
- Internal co-existence mechanism between Wi-Fi and BLUETOOTH to share the same antenna
IEEE 802.15.4
- Compliant with IEEE 802.15.4-2015 protocol
- OQPSK PHY in 2.4GHz band
- 250Kbps Data rate:
- Thread 1.3
- Zigbee® 3.0
CPU and memory
- HP RISC-V processor
  - Up to 160MHz clock speed
  - 4-stage pipeline
  - CoreMark® scores - 441.32 CoreMark；2.76 CoreMark/MHz (160MHz)
- LP RISC-V processor
  - Up to 20MHz clock speed
  - 2-stage pipeline
- 32KB L1 cache
- 320KB ROM
- 512KB HP SRAM
- 16KB LP SRAM
- Supported SPI protocols - SPI, Dual SPI, Quad SPI, and QPI interfaces that allow connection to flash and other SPI devices off the chip’s package
- Flash controller with cache is supported
- Flash In-Circuit Programming (ICP) is supported

Advanced peripheral interfaces
- 30x GPIOs (QFN40) or 22x GPIOs (QFN32)
- Analog interfaces
  - 1x 12-bit SAR ADC, up to 7x channels
  - 1x temperature sensor
- Digital interfaces
  - 2x UART
  - 1x Low-Power (LP) UART
  - 2x SPI ports for communication with flash
  - 1x general-purpose SPI port
  - 1x I²C
  - 1x Low-Power (LP) I²C
  - 1x I²S
  - 1x pulse count controller
  - 1x USB Serial/JTAG controller
  - 2x TWAI® controller, compatible with ISO 11898-1 (CAN specification 2.0)
  - 1x SDIO 2.0 slave controller
  - LED PWM controller, up to 6x channels
  - 1x Motor Control PWM (MCPWM)
  - 1x remote control peripheral (TX/RX)
  - 1x Parallel I/O interface (PARLIO)
  - General DMA controller, with 3x transmit channels and 3x receive channels
  - Event Task Matrix (ETM)
- Timers
  - 1x 52-bit system timer
  - 2x 54-bit general-purpose timers
  - 3x digital watchdog timers
  - 1x analog watchdog timer
Power management
- Fine-resolution power control through a selection of clock frequency, duty cycle, Wi-Fi operating modes, and individual power control of internal components
- 4x power modes designed for typical scenarios - Active, Modem-sleep, Light-sleep, and Deep-sleep
- Power consumption in Deep-sleep mode is 7µA
- Low-Power (LP) memory remains powered on in Deep-sleep mode
Security
- Secure boot - permission control on accessing internal and external memory
- Flash encryption - memory encryption and decryption
- 4096-bit OTP, up to 1792-bits for users
- Trusted execution environment (TEE) controller and access permission management (APM)
- Cryptographic hardware acceleration
  - AES-128/256 (FIPS PUB 197)
  - ECC
  - HMAC
  - RSA
  - SHA
  - Digital signature
  - Hash (FIPS PUB 180-4)
- External Memory Encryption and Decryption (XTS_AES)
- Random Number Generator (RNG)
RF module
- Antenna switches, RF balun, power amplifier, low-noise receive amplifier
- Up to +21dBm of power for an 802.11b transmission
- Up to +19.5dBm of power for an 802.11ax transmission
- Up to -106dBm of sensitivity for BLUETOOTH LE receiver (125Kbps)
Package options
- 5mm² QFN-40
- 5mm² QFN-32

Applications

Smart home
Industrial automation
Healthcare
Consumer electronics
Smart agriculture
Point-of-sale (POS) machines

Service robots
Audio devices
Generic low-power IoT
- Sensor hubs
- Data loggers

Specifications

3.0V to 3.6V input
100kSPS (kilo samples-per-second) maximum ADC sampling rate
2412MHz to 2484MHz Wi-Fi radio center frequency range of the operating channel
2405MHz to 2480MHz 802.15.4 radio center frequency range of the operating channel

BLUETOOTH LE radio
- 2402MHz to 2480MHz center frequency range of the operating channel
- -15.0dBm to 20.0dBm RF transmit power range
2pF typical pin capacitance
-40°C to +105°C ambient temperature range