ESP32-S31

Comprehensive Connectivity

                ESP32-S31 integrates both
                wireless and wired connectivity for
                versatile networking. It supports 2.4 GHz Wi-Fi 6 (802.11ax)
                for
                enhanced transmission efficiency and reduced power
                  consumption, making it ideal for battery-powered and always-connected
                devices. IEEE 802.15.4 enables Thread and Zigbee protocols,
                and Bluetooth® 5.4 (LE) supports LE Audio for
                high-quality, low-power audio streaming, Direction Finding,
                and Bluetooth Mesh 1.1 for scalable many-to-many device
                communication. While Bluetooth Classic (BR/EDR) ensures
                compatibility with legacy audio devices and low-latency HMI
                applications. Also, the 1000 Mbps Ethernet MAC provides
                stable, high-bandwidth wired connectivity for IoT
                applications.
              
            
            
              System and Memory
              
                ESP32-S31 is a
                dual-core 32-bit RISC-V microcontroller
                running at 320 MHz with MMU support
                providing 6.86 CoreMark/MHz processing performance and
                60 GPIOs for design flexibility. One core
                features a wide 128-bit data path with SIMD instructions,
                enabling fast parallel processing. The SoC provides 512 KB
                SRAM and 250 MHz 8-bit DDR PSRAM connectivity with
                simultaneous flash and PSRAM access. Multiple dedicated SPI
                interfaces, compatible with high-speed Octal SPI mode,
                enable flexible external memory expansion.
              
            
            
              Advanced HMI Support
              
                ESP32-S31 provides comprehensive human-machine interface
                capabilities for rich multimedia applications. It features a
                DVP camera interface (8 to 16-bit) and versatile LCD support
                (8 to 24-bit parallel RGB, I8080, MOTO6800), supporting
                conversion between RGB565, YUV422, YUV420, and YUV411.
                Dedicated hardware accelerators including JPEG codec, PPA,
                and 2D-DMA enable
                efficient image processing and display updates. Combined with up to 14 capacitive touch sensing channels,
                the ESP32-S31 is ideal for
                smart displays, video doorbells, multimedia
                  panels, and applications requiring
                seamless touch, visual, and audio integration.
              
            
            
              Flexible Audio Integration
              
                The ESP32-S31 delivers versatile audio capabilities across
                wireless and wired interfaces. Bluetooth 5.4 LE Audio
                enables high-quality, low-power streaming with
                LC3 codec and multi-stream audio, while
                Bluetooth Classic (BR/EDR) ensures compatibility with
                headphones, speakers, and automotive systems. Dual I2S
                controllers with hardware-level Bluetooth audio
                synchronization provide precise timing and minimal latency,
                eliminating software-based synchronization complexity.
              
            
            
              Security
              
                ESP32-S31 provides robust hardware-based security for
                applications with stringent industry requirements. A
                standout highlight is the integration of TRNG and RAM-based
                PUF capabilities, providing a strong foundation for key
                generation and device security. It also supports secure
                boot, flash and PSRAM encryption, and cryptographic
                accelerators including AES-128/256, RSA, ECDSA, and ECC. In
                addition, an ECDSA-based digital signature peripheral
                protects private keys from software access, while
                TEE and APM enable software isolation for
                secure multi-application deployment.
              
            
            
              Software Availability
              
                ESP32-S31 will be supported through Espressif's open-source
                IoT Development Framework
                ESP-IDF、ESP-Matter
                (for Matter devices), ESP-BLE-AUDIO and
                ESP-GMF
                (for multimedia applications). ESP32-S31 will also work with
                the
                ESP Private Agents
                platform as well as directly with common LLMs to build
                client devices that run or interact with AI agents to create
                voice-enabled and intelligent applications.