Wi-Fi

• 1T1R in 2.4 GHz single band

• Operating frequency: 2412 ~ 2484 MHz

• IEEE 802.11ax-compliant

– 20 MHz-only non-AP mode

– Uplink and downlink OFDMA to enhance connectivity and performance in congested environments

for IoT applications

– Downlink MU-MIMO (multi-user, multiple input, multiple output) to increase network capacity

– Beamformee that improves signal quality

– Spatial reuse to maximize parallel transmissions

– Target wake time (TWT) that optimizes power saving mechanisms

• Fully compatible with IEEE 802.11b/g/n protocol

– 20 MHz and 40 MHz bandwidth

– Data rate up to 150 Mbps

– Wi-Fi Multimedia (WMM)

– TX/RX A-MPDU, TX/RX A-MSDU

– Immediate Block ACK

– Fragmentation and defragmentation

– Transmission opportunity (TXOP)

– Automatic Beacon monitoring (hardware TSF)

– Four virtual Wi-Fi interfaces

– Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode,

and promiscuous mode

Note that when ESP32-C61 scans in Station mode, the SoftAP channel will change along with the

Station channel

– Antenna diversity

– 802.11mc FTM

Bluetooth®

• Bluetooth LE: Bluetooth Core 6.0 certified

• Bluetooth mesh 1.1

• High power mode (20 dBm)

• Direction finding (AoA/AoD)

• Periodic advertising with responses (PAwR)

• LE connection subrating

• LE power control

• Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps

• LE advertising extensions and multiple advertising sets

• Allow devices to operate in Broadcaster, Observer, Central, and Peripheral roles concurrently

CPU and Memory

• 32-bit RISC-V single-core processor:

– Clock speed: up to 160 MHz

– CoreMark® score at 160 MHz: 553.78 CoreMark; 3.46 CoreMark/MHz (O3)

– Five-stage pipeline

• L1 cache (32 KB)

• ROM: 256 KB

• SRAM: 320 KB

• Supported SPI protocols: SPI, Dual SPI, Quad SPI, and QPI interfaces that allow connection to flash,

external RAM, and other SPI devices

• Flash/external RAM controller with cache is supported

• Flash in-Circuit Programming (ICP) is supported

Advanced Peripheral Interfaces

• 30 programmable GPIOs

– Five strapping GPIOs

• Digital interfaces:

– Two SPI ports for communication with flash and PSRAM

– General-purpose SPI port

– Three UART

– I2C

– I2S

– LED PWM controller, up to 6 channels

– USB Serial/JTAG controller

– SDIO 2.0 slave controller

– General DMA controller, with 2 transmit channels and 2 receive channels

– On-chip debug functionality via JTAG

– Event task matrix (ETM)

• Analog interfaces:

– 12-bit SAR ADC, up to 4 channels

– Temperature sensor

– Brown-out detector

– Analog voltage comparator

• Timers:

– Two 54-bit general-purpose timers

– 52-bit system timer

– Two main system watchdog timers

– Three watchdog timers