Espressif's ESP32-E22 Brings Tri-Band Wi-Fi 6E to a RISC-V Module

High-Bandwidth Wi-Fi 6E Arrives in the ESP32 Family

For years the ESP32 has been the workhorse of hobbyist and embedded wireless, but its Wi-Fi has stayed firmly in the older bands. That ceiling is lifting. On June 13, 2026, Espressif detailed the ESP32-E22, a module that brings tri-band Wi-Fi 6E to the ecosystem — a meaningful jump for anyone building bandwidth-hungry connected devices on a small footprint.

ESP32-E22 Specifications: RISC-V and Tri-Band Radio

The module is built around a dual-core RISC-V CPU running at 500 MHz with 1MB of RAM. The standout feature is the radio: Wi-Fi 6E across the 2.4 GHz, 5 GHz, and 6 GHz bands, with throughput rated up to 2.1 Gbps, alongside Bluetooth 5.4/6.0. Rounding out the spec sheet are 41 GPIO pins and high-speed PCIe 2.0 and SDIO interfaces for connecting the module to a host processor.

That interface list matters as much as the radio. PCIe and SDIO mean the ESP32-E22 is well suited to act as a fast wireless front-end for a larger system-on-chip — say, adding modern Wi-Fi 6E to a single-board computer that lacks it natively.

Why Wi-Fi 6E on an Embedded Module Is a Big Deal

The move to the 6 GHz band is the part worth dwelling on. Wi-Fi 6E opens up a wide swath of clean spectrum that older devices simply cannot touch, which means less congestion, lower latency, and more reliable throughput in crowded radio environments. For an embedded part, that translates into edge devices that can stream high-resolution video, push large over-the-air updates quickly, or move sensor-fusion data without fighting every other gadget on the 2.4 GHz band.

Espressif also reports the ESP32-E22 has obtained Wi-Fi CERTIFIED status and that open-source Linux drivers are available. For the self-hosted and maker crowd, that open-driver commitment is the detail that earns trust — it means the module can be integrated into Linux-based SBC projects without reverse-engineering a black-box blob, and that the community can audit and improve the stack.

Pushing Modern Connectivity Down to Compact Designs

The broader story is a familiar and encouraging one for our mini computers readers: capabilities that recently lived only in laptops and routers keep migrating down into tiny, affordable modules. A RISC-V Wi-Fi 6E module with open drivers and PCIe means tomorrow's compact, standalone devices — home-lab gateways, edge-AI cameras, portable sensor hubs — can ride the latest wireless standard without ballooning in size or cost. The ESP32 line earned its reputation by making connectivity cheap and accessible; the ESP32-E22 extends that promise to the modern spectrum.

Sources: CNX Software — "Espressif ESP32-E22 Wi-Fi 6E module," June 13, 2026.