Espressif ESP32-S31 RISC-V SoC Enters Mass Production

Espressif Systems (SSE: 688018) announces that its ESP32-S31 has entered mass production and is now available for purchase. Designed for next-generation AIoT applications, the ESP32-S31 is a high-performance dual-core RISC-V System-on-Chip (SoC) with comprehensive wireless connectivity, making it an ideal solution for a wide range of smart devices.

The ESP32-S31 features a powerful dual-core 32-bit RISC-V CPU, capable of running at speeds up to 320 MHz. One of its cores is specifically designed with a 128-bit data path and SIMD instruction set, which significantly accelerates computing performance. The chip also integrates a 40 MHz low-power coprocessor, 512 KB of on-chip SRAM, and supports high-speed 250 MHz DDR PSRAM expansion, alongside up to 60 versatile GPIOs.

Connectivity is a key differentiator for the ESP32-S31, as it integrates Wi-Fi 6 (2.4 GHz), Bluetooth 5.4 (including LE Audio and Classic BR/EDR), and IEEE 802.15.4 for Zigbee and Thread protocols. Additionally, it includes a Gigabit Ethernet MAC and supports Matter over both Wi-Fi and Thread, ensuring robust and flexible networking capabilities for modern IoT ecosystems.

To support rich human-machine interaction, the ESP32-S31 provides interfaces for DVP cameras, multiple LCD display types, and up to 14 capacitive touch channels. Dedicated hardware accelerators, such as a JPEG encoder/decoder and a 2D graphics accelerator, improve multimedia performance. Dual I2S controllers enable hardware-level Bluetooth audio synchronization, and the SoC is fully supported by Espressif's ESP-IDF development framework and its extensive software ecosystem.

Specifications

Key Features

• High-performance dual-core 32-bit RISC-V CPU operating up to 320 MHz.
• Accelerated computing performance with 128-bit data path and SIMD instruction set on one core.
• Integrated 40 MHz low-power coprocessor for efficient operation.
• Comprehensive wireless connectivity including Wi-Fi 6 (2.4 GHz), Bluetooth 5.4 (LE Audio, Classic BR/EDR), and IEEE 802.15.4 (Zigbee, Thread).
• Integrated Gigabit Ethernet MAC and support for Matter over Wi-Fi and Thread.
• Rich human-machine interaction support with DVP camera, multiple LCD display interfaces, and up to 14 capacitive touch channels.
• Dedicated hardware accelerators for multimedia, including JPEG encoder/decoder and 2D graphics accelerator.
• Dual I2S controllers enabling hardware-level Bluetooth audio synchronization.
• 512 KB on-chip SRAM and support for high-speed 250 MHz DDR PSRAM expansion.
• Fully supported by Espressif's ESP-IDF development framework and compatible with its software ecosystem (ESP-Matter, ESP-GMF, ESP-BLE-MESH, ESP-BLE-AUDIO).
• Can function as a connectivity coprocessor through ESP-Hosted and ESP-AT.

Applications

• Next-generation AIoT applications
• Smart home hubs
• Smart speakers
• Edge AI devices
• Industrial automation