ESP32: Dual-Core WiFi + Bluetooth SoC — Complete Specs & Sourcing

The ESP32 from Espressif is the leading WiFi+Bluetooth SoC for IoT products. This guide explains its specifications, use cases and how to source it reliably.

By Vigny (深圳市华芯购电子有限公司) · Published 2026-09-27 · Data verified 2026-09-29 · Sources: manufacturer datasheets & HuaXinGou stock verification

Processor and Radio

The ESP32 integrates two Xtensa LX6 cores at up to 240 MHz, 802.11 b/g/n WiFi, Bluetooth 4.2 BR/EDR and BLE. It offers 520 KB SRAM and supports external SPI flash up to 16 MB.

Peripherals and Security

The SoC provides SDMMC, CAN, I2C, SPI, UART, I2S, touch sensors, ADC/DAC and hardware AES/SHA/RSA acceleration. This makes secure IoT designs straightforward.

Module vs Bare Chip

Designs commonly use modules like ESP32-WROOM-32 or bare ESP32 chips. Modules simplify certification (FCC/CE) while bare chips lower cost in high volume.

Sourcing Advice

ESP32 availability fluctuates with demand cycles. Specify module part numbers such as ESP32-WROOM-32E or chip ESP32-D0WD-V3 when purchasing. HuaXinGou can verify genuine Espressif stock and batch codes.