[Skip to content](#main-content) [esp.run](/) [Compare](/)[Modules](/modules/)[Dev boards](/devkits/) [EN](/series/esp32-s31/)[中文](/zh/series/esp32-s31/)[日本語](/ja/series/esp32-s31/)[한국어](/ko/series/esp32-s31/) [← All official models](/) # ESP32-S31 High-performance multi-protocol HMI Dual-core 320 MHz RISC-V with Wi-Fi 6, Bluetooth 5.4, 802.15.4 and 60 GPIOs. Mass productionVerified 2026-10-11 ## Best for - Advanced HMI, connected audio and multi-protocol products ## Avoid for - Cost-minimized simple endpoints ## CPU & memory Architecture RISC-V Core(s) 2 Maximum clock 320 MHz On-chip SRAM 512 KB ROM Not confirmed Flash External or in-package by part PSRAM External DDR support Packages QFN80 8×8 mm ## Wireless Wi-Fi 2.4 GHz Wi-Fi 6 Wi-Fi max rate 150 Mbps Bluetooth Bluetooth 5.4 LE + Bluetooth Classic IEEE 802.15.4 Yes ## Interfaces USB OTG high-speed USB Serial/JTAG Yes Ethernet MAC Yes Camera Yes Display Yes SD/MMC Yes Maximum GPIO 60 ## Security Secure boot Yes Flash encryption Yes Crypto accelerators AES · ECC · HMAC · RSA · SHA · RSA\_DS · ECDSA\_DS · TRNG TEE / APM Yes ## Analog & power ADC channels 16 ADC resolution 12-bit Touch sensing Yes Touch channels Not confirmed Supply voltage 2.7–3.6 V ULP core ULP-RISC-V Deep-sleep current Not confirmed ## Lifecycle & timing Announced Not confirmed Mass production 2026-07-27 NRND Not confirmed EOL Not confirmed ## Official modules Every official ESP32 base module, grouped by series. Status follows the ordering codes; "Mixed" means they differ. Module Status Form factor Antenna Flash PSRAM ESP32-S31-WROOM-1 Officially listed WROOM PCB Not confirmed Not confirmed ESP32-S31-WROOM-3 Officially listed WROOM PCB Not confirmed Not confirmed ## Official development boards Official Espressif development boards, including discontinued boards from the per-series EOL lists. Board Status Board type ESP32-S31-Function-CoreBoard-1 Officially listed Function EV board ESP32-S31-Korvo-1 Officially listed Korvo Where to buy ## Official page and distributor search These are search and official pages, not live stock or price quotes. Confirm the exact ordering code with the seller. [Espressif product page ↗](https://www.espressif.com/en/products/socs/esp32-s31)[Official datasheet ↗](https://documentation.espressif.com/esp32-s31_datasheet_en.html)[Authorized distributors ↗](https://www.espressif.com/en/contact-us/distributors)[Search LCSC ↗](https://www.lcsc.com/search?q=ESP32-S31)[Search Digi-Key ↗](https://www.digikey.com/en/products/result?keywords=ESP32-S31)[Search Mouser ↗](https://www.mouser.com/c/?q=ESP32-S31) ## Official chip ordering codes Each row is an official SoC or SiP. Buy links search that exact part name. Part Status Package Flash PSRAM Buy ESP32-S31NRV16 Mass production QFN80 See datasheet None confirmed [Search LCSC](https://www.lcsc.com/search?q=ESP32-S31NRV16)[Search Digi-Key](https://www.digikey.com/en/products/result?keywords=ESP32-S31NRV16)[Search Mouser](https://www.mouser.com/c/?q=ESP32-S31NRV16) ESP32-S31NRV32 Mass production QFN80 See datasheet None confirmed [Search LCSC](https://www.lcsc.com/search?q=ESP32-S31NRV32)[Search Digi-Key](https://www.digikey.com/en/products/result?keywords=ESP32-S31NRV32)[Search Mouser](https://www.mouser.com/c/?q=ESP32-S31NRV32) Chip package ## Chip pin map Package top view from the official series datasheet. Filter pins or open the accessible table. This is a reference map, not an electrical simulator. All pinsPower pinsGPIO pinsAnalog pinsUSB pinsMemory pinsJTAG pinsDedicated signals Pin mapPin list QFN80, top viewESP32-S31 Series Datasheet v0.5QFN80123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 Pin details Select a pin to inspect its functions and warnings. Complete accessible pin table Physical pin Label Functions Direction Warnings 1 ANT ANT Input — 2 VDDA3 VDDA3 Power — 3 VDDA4 VDDA4 Power — 4 CHIP\_PU CHIP\_PU Input Enable pin. Do not leave it floating; follow the datasheet power-up circuit. 5 XTAL\_32K\_N/GPIO0 XTAL\_32K\_N/GPIO0, GPIO Matrix Input — 6 XTAL\_32K\_P/GPIO1 XTAL\_32K\_P/GPIO1, GPIO Matrix Input — 7 GPIO2 GPIO2, GPIO Matrix Bidirectional — 8 GPIO3 GPIO3, GPIO Matrix Bidirectional — 9 GPIO4 GPIO4, GPIO Matrix Bidirectional — 10 GPIO5 GPIO5, GPIO Matrix Bidirectional — 11 VDDPST\_1 VDDPST\_1 Power — 12 GPIO6 GPIO6, GPIO Matrix Bidirectional — 13 GPIO7 GPIO7, GPIO Matrix Bidirectional — 14 GPIO8 GPIO8, GPIO Matrix Bidirectional — 15 GPIO9 GPIO9, GPIO Matrix Bidirectional — 16 GPIO10 GPIO10, GPIO Matrix Bidirectional — 17 GPIO11 GPIO11, GPIO Matrix Bidirectional — 18 VREF\_TOUCH VREF\_TOUCH Input — 19 GPIO12 GPIO12, GPIO Matrix Bidirectional — 20 GPIO13 GPIO13, GPIO Matrix Bidirectional — 21 GPIO14 GPIO14, GPIO Matrix Bidirectional — 22 GPIO15 GPIO15, GPIO Matrix Bidirectional — 23 GPIO16 GPIO16, GPIO Matrix Bidirectional — 24 GPIO17 GPIO17, GPIO Matrix Bidirectional — 25 GPIO18 GPIO18, GPIO Matrix Bidirectional — 26 GPIO19 GPIO19, GPIO Matrix Bidirectional — 27 SDIO\_DATA0 SDIO\_DATA0 Bidirectional — 28 SDIO\_DATA1 SDIO\_DATA1 Bidirectional — 29 SDIO\_DATA2 SDIO\_DATA2 Bidirectional — 30 VDD\_PSRAM\_1P8\_1 VDD\_PSRAM\_1P8\_1 Power — 31 SDIO\_DATA3 SDIO\_DATA3 Bidirectional — 32 SDIO\_CLK SDIO\_CLK Bidirectional — 33 SDIO\_CMD SDIO\_CMD Bidirectional — 34 VDD\_PSRAM\_1P8\_2 VDD\_PSRAM\_1P8\_2 Power — 35 VDD\_LDO\_1P8 VDD\_LDO\_1P8 Power — 36 SPICS SPICS Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 37 SPIQ SPIQ Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 38 SPIWP SPIWP Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 39 VDD\_SPI VDD\_SPI Power — 40 SPIHD SPIHD Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 41 SPICLK SPICLK Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 42 SPID SPID Bidirectional This signal may be reserved by in-package flash or PSRAM on some ordering codes. 43 VCCA/VDDPST\_2 VCCA/VDDPST\_2 Power — 44 USB\_DP USB\_DP Bidirectional — 45 USB\_DM USB\_DM Bidirectional — 46 GPIO33 GPIO33, GPIO Matrix Bidirectional — 47 GPIO34 GPIO34, GPIO Matrix Bidirectional — 48 GPIO35 GPIO35, GPIO Matrix Bidirectional — 49 GPIO36 GPIO36, GPIO Matrix Bidirectional — 50 GPIO37 GPIO37, GPIO Matrix Bidirectional — 51 GPIO38 GPIO38, GPIO Matrix Bidirectional — 52 GPIO39 GPIO39, GPIO Matrix Bidirectional — 53 GPIO40 GPIO40, GPIO Matrix Bidirectional — 54 VDDPST\_3 VDDPST\_3 Power — 55 GPIO42 GPIO42, GPIO Matrix Bidirectional — 56 GPIO43 GPIO43, GPIO Matrix Bidirectional — 57 GPIO44 GPIO44, GPIO Matrix Bidirectional — 58 GPIO45 GPIO45, GPIO Matrix Bidirectional — 59 GPIO46 GPIO46, GPIO Matrix Bidirectional — 60 GPIO47 GPIO47, GPIO Matrix Bidirectional — 61 GPIO48 GPIO48, GPIO Matrix Bidirectional — 62 GPIO49 GPIO49, GPIO Matrix Bidirectional — 63 VREF\_ADC VREF\_ADC Input — 64 VDDPST\_4 VDDPST\_4 Power — 65 GPIO50 GPIO50, GPIO Matrix Bidirectional — 66 GPIO51 GPIO51, GPIO Matrix Bidirectional — 67 GPIO52 GPIO52, GPIO Matrix Bidirectional — 68 GPIO53 GPIO53, GPIO Matrix Bidirectional — 69 MTDO MTDO Bidirectional JTAG and boot-related function. Verify the part-specific reset configuration. 70 MTCK MTCK Bidirectional JTAG and boot-related function. Verify the part-specific reset configuration. 71 MTDI MTDI Bidirectional JTAG and boot-related function. Verify the part-specific reset configuration. 72 MTMS MTMS Bidirectional JTAG and boot-related function. Verify the part-specific reset configuration. 73 GPIO58 GPIO58, GPIO Matrix Bidirectional — 74 GPIO59 GPIO59, GPIO Matrix Bidirectional — 75 GPIO60 GPIO60, GPIO Matrix Bidirectional — 76 GPIO61 GPIO61, GPIO Matrix Bidirectional — 77 VDDA1 VDDA1 Power — 78 XTAL\_N XTAL\_N Input — 79 XTAL\_P XTAL\_P Input — 80 VDDA2 VDDA2 Power — 81 GND GND Power — ## Official evidence [Official source: ESP32-S31 product page ↗](https://www.espressif.com/en/products/socs/esp32-s31)[Official source: ESP32-S31 Mass Production ↗](https://www.espressif.com/en/news/ESP32_S31_Mass_Production)[Datasheet: ESP32-S31 Series Datasheet ↗](https://documentation.espressif.com/esp32-s31_datasheet_en.html) esp.run is an independent guide and is not affiliated with Espressif Systems. Independent guideData verified 2026-10-11 [Official sources ↗](https://www.espressif.com/en/products/socs)