dev.to Article - English

Title: ESP32-S31: The New Espressif IoT Chip That Changes Everything

Hey makers! Got some exciting news — Espressif just dropped the ESP32-S31 , their most capable IoT chip yet. And it's a pretty big deal.

What's Inside

CPU : RISC-V dual-core @ 320 MHz with SIMD instructions

Wireless : Wi-Fi 6 (2.4 GHz), Bluetooth 5.4 (LE Audio + Classic), IEEE 802.15.4 (Thread + Zigbee)

Wired : Built-in Gigabit Ethernet

Memory : 512 KB SRAM + up to 250 MHz PSRAM support

Security : Secure boot, memory encryption, cryptographic acceleration, TEE

Protocol : Full Matter protocol support

Why This Matters

1. RISC-V Architecture

For the first time, Espressif chose RISC-V over Xtensa for a high-end ESP32 chip. RISC-V is an open ISA — meaning anyone can build toolchains, compilers, and libraries without vendor restrictions. The community can innovate freely.

2. All the Protocols in One Chip

Wi-Fi 6 + Bluetooth 5.4 + Thread + Zigbee + Ethernet — all in one package.…