2.4GHz Wi-Fi+Bluetooth LE SoC
ESP32-S3FH4R2 is a highly integrated low-power Wi-Fi and Bluetooth LE System-on-Chip (SoC) from Espressif Systems. It is based on a dual-core Xtensa® LX7 processor running at up to 240 MHz and is designed for IoT, smart home, industrial control, AIoT, audio processing, and embedded applications. The ESP32-S3FH4R2 variant includes 4 MB of in-package Quad SPI Flash and 2 MB of in-package Quad SPI PSRAM, reducing external component count and simplifying PCB design.
Key Features
Dual-core Xtensa® LX7 CPU
Up to 240 MHz operating frequency
32-bit architecture with floating-point unit (FPU)
SIMD instructions for AI and signal-processing workloads
Integrated Memory
4 MB in-package Flash
2 MB in-package PSRAM
512 KB on-chip SRAM
384 KB ROM
Additional RTC memory for low-power operation
Wireless Connectivity
IEEE 802.11 b/g/n 2.4 GHz Wi-Fi
Bluetooth® 5 Low Energy (LE)
Long-range and low-power wireless communication support
Rich Peripheral Set
Up to 45 programmable GPIOs
USB OTG and USB Serial/JTAG
SPI, I²C, I²S, UART, SDIO
TWAI® (CAN 2.0 compatible)
Camera interface
LCD interface
PWM, pulse counter, RMT, DMA controller
Analog Features
Two 12-bit SAR ADCs
Temperature sensor
14 capacitive touch sensing inputs
Security Features
Secure Boot
Flash Encryption
AES, SHA, RSA, HMAC hardware accelerators
True Random Number Generator (RNG)
Digital Signature peripheral
Low-Power Operation
Multiple power-saving modes
ULP-RISC-V coprocessor
ULP-FSM coprocessor
Deep-sleep support with RTC memory retention