Espressif ESP32-H2FH4 RISC-V Bluetooth LE 5.3 + IEEE 802.15.4 SoC Chip 96MHz 4MB Flash QFN-32

Model:
ESP32-H2FH4
Product Series:
ESP32-H2
Processor:
32-bit RISC-V Single-Core
Max Frequency:
96MHz
ROM:
128KB
SRAM:
320KB
LP Memory:
4KB
Operating Voltage:
3V ~ 3.6V
Package:
QFN-32

ESP32-H2FH4 Product Overview

The ESP32-H2FH4 is an ultra-low-power, highly integrated RISC-V wireless SoC from Espressif Systems, featuring a 32-bit RISC-V single-core processor running at up to 96MHz. Housed in a QFN-32 (4×4mm) ultra-compact package, ESP32-H2FH4 integrates 4MB in-package Flash320KB SRAM128KB ROM, and 4KB LP memory. The ESP32-H2FH4 supports 2.4GHz Bluetooth LE 5.3 and IEEE 802.15.4 dual-mode wireless communication, enabling ThreadZigbee 3.0, and Matter over Thread devices. ESP32-H2FH4 provides 19 programmable GPIOs with rich peripheral interfaces including SPI, UART, I2C, I2S, RMT, GDMA, and PWM. ESP32-H2FH4 integrates comprehensive hardware security mechanisms including ECC-based Secure Boot, AES-128/256-XTS Flash Encryption, Digital Signature (ECDSA), and HMAC. The chip is widely used in Matter smart home, Thread/Zigbee IoT nodes, industrial automation, healthcare, and smart agriculture low-power wireless IoT applications.

ESP32-H2FH4 Key Features

RISC-V 32-bit Single-Core Processor, 96MHz High Performance: The ESP32-H2FH4 features a 32-bit RISC-V single-core processor running at up to 96MHz, achieving a CoreMark® score of 279.2 (2.91 CoreMark/MHz). The four-stage pipeline architecture delivers efficient computing power while supporting low-power operation modes.

4MB In-Package Flash, Simplified Design: ESP32-H2FH4 integrates 4MB in-package Flash, eliminating the need for an external Flash chip and saving PCB area. On-chip memory also includes 320KB SRAM (16KB dedicated to cache)128KB ROM, and 4KB LP memory.

Bluetooth LE 5.3 + IEEE 802.15.4 Dual-Mode Wireless: ESP32-H2FH4 supports Bluetooth LE 5.3 with 2Mbps high-speed, 125Kbps/500Kbps long-range Coded PHY, advertising extensions, and Bluetooth mesh. ESP32-H2FH4 also supports IEEE 802.15.4-2015 at 250Kbps, with Thread 1.3Zigbee 3.0, and Matter over Thread support. Receiver sensitivity reaches -106.5dBm, with transmit power up to 20dBm.

19 GPIOs and Rich Peripheral Interfaces: ESP32-H2FH4 provides 19 programmable GPIOs, supporting SPI, UART, I2C, I2S, RMT, GDMA, PWM, ADC, and temperature sensor. Integrated USB Serial/JTAG controller simplifies debugging and firmware programming.

Comprehensive Hardware Security: ESP32-H2FH4 features ECC-based Secure BootAES-128/256-XTS Flash EncryptionDigital Signature (ECDSA) , HMAC, and True Random Number Generator (TRNG). These security features provide robust device identity authentication and data protection for IoT devices.

Ultra-Low Power & Industrial-Grade Wide Temperature: ESP32-H2FH4 supports multiple low-power states with low-power components capable of operating in Deep-sleep mode. Operating voltage range is 3V ~ 3.6V, and temperature range is -40℃ ~ +105℃, meeting industrial-grade requirements.


ESP32-H2FH4 Applications

With its Bluetooth LE + IEEE 802.15.4 dual-mode wireless capability, RISC-V open architecture, and compact package design, ESP32-H2FH4 is widely used in:

Matter Smart Home Devices: ESP32-H2FH4 supports Matter over Thread end devices, Thread Border Routers, and Matter gateways for multi-ecosystem interoperability

Thread/Zigbee IoT Nodes: ESP32-H2FH4 is Thread 1.3 and Zigbee 3.0 certified for low-power mesh network nodes

Smart Home & Building Automation: ESP32-H2FH4 is used in smart lighting, smart locks, environmental sensors, thermostats

Industrial Automation & Control: ESP32-H2FH4 is applied in industrial sensors, equipment monitoring, remote data acquisition

Healthcare Devices: ESP32-H2FH4 is suitable for portable medical devices, health monitors, wearable sensors

Smart Agriculture: ESP32-H2FH4 is used in environmental monitoring sensors, smart irrigation control

Generic Low-Power IoT Sensor Hubs & Data Loggers: ESP32-H2FH4 supports low-power IoT sensor hubs and data loggers

POS Machines & Service Robots: ESP32-H2FH4 is applied in POS machines and service robots

Consumer Electronics: ESP32-H2FH4 is found in consumer electronics


ESP32-H2FH4 Advantages

The ESP32-H2FH4 is a highly cost-effective RISC-V dual-mode wireless SoC solution from Espressif for low-power, high-value Thread/Zigbee/Matter IoT connectivity applications. Its core advantage lies in the single-chip integration of a RISC-V processor, Bluetooth LE 5.3, IEEE 802.15.4, and 4MB in-package Flash.

Bluetooth LE + IEEE 802.15.4 Dual-Mode, One Chip for Multiple Uses: ESP32-H2FH4 supports Bluetooth LE 5.3 and IEEE 802.15.4 dual-mode wireless, meeting both point-to-point (Bluetooth) and mesh networking (Thread/Zigbee) requirements. Thread 1.3 and Zigbee 3.0 certified, with Matter over Thread support.

4MB In-Package Flash, Simplified PCB Design: ESP32-H2FH4 integrates 4MB Flash directly inside the chip package, saving PCB area, simplifying hardware design, and reducing BOM cost.

RISC-V Open Architecture + 96MHz High Performance: ESP32-H2FH4 is powered by a 32-bit RISC-V single-core processor at up to 96MHz with a CoreMark score of 279.2, offering flexibility and reduced licensing costs.

Ultra-Low Power for Battery-Powered Devices: ESP32-H2FH4 supports multiple low-power states. Receive current is only 25mA ~ 27mA, with transmit current of 26mA ~ 153mA, ideal for battery-powered portable and wearable devices.

Industrial-Grade Wide Temperature Range: ESP32-H2FH4 operating temperature range of -40℃ ~ +105℃, with receiver sensitivity down to -106.5dBm and transmit power up to 20dBm.

Comprehensive Hardware Security: ESP32-H2FH4 features ECC-based Secure BootAES-128/256-XTS Flash EncryptionDigital Signature (ECDSA) , HMAC, and TRNG.

Mature Software Ecosystem: Espressif provides a complete ESP-IDF development framework with Thread and Zigbee protocol stacks, Matter support, rich APIs, and debugging tools.


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FAQs:

  1. Question: What is the ESP32-H2FH4 chip?
    Answer: ESP32-H2FH4 is a low-power, RISC-V based wireless MCU from Espressif that supports Bluetooth 5 (LE) and IEEE 802.15.4 protocols. It is designed for use in IoT devices, smart home automation, and industrial sensors.

  2. Question: What are the core processor and main frequency?
    Answer: ESP32-H2FH4 features a 32-bit RISC-V single-core processor running at a main frequency of up to 96 MHz .

  3. Question: What is the internal storage capacity?
    Answer: ESP32-H2FH4 integrates 320 KB of SRAM, 128 KB of ROM, and 4 MB of embedded Flash memory for program storage .

  4. Question: Does the chip support Wi-Fi?
    Answer: No, ESP32-H2FH4 only supports Bluetooth 5 (LE) and IEEE 802.15.4. It does not include Wi-Fi functionality .

  5. Question: What wireless communication protocols does it support?
    Answer: ESP32-H2FH4 supports Bluetooth Low Energy 5.3, Bluetooth Mesh, and the IEEE 802.15.4 standard. It also supports application protocols like Thread 1.3, Zigbee 3.0, and Matter .

  6. Question: What package and dimensions does the chip use?
    Answer: ESP32-H2FH4 uses a 32-pin QFN package (with an exposed pad) with a physical dimension of 4.0 mm x 4.0 mm .

  7. Question: What are the operating voltage and temperature ranges?
    Answer: ESP32-H2FH4 operating voltage range is from 3.0V to 3.6V. The industrial-grade temperature range covers -40°C to +105°C .

  8. Question: How many programmable GPIO pins are available?
    Answer: ESP32-H2FH4 provides a total of 19 programmable GPIO pins, supporting interfaces such as SPI, I2C, UART, I2S, and PWM .

  9. Question: What is the current supply status of this chip?
    Answer: According to some distributors, ESP32-H2FH4 is marked as "Not for new designs" (NRND), so users should confirm its lifecycle status during procurement .

  10. Question: What are the typical applications for this chip?
    Answer: ESP32-H2FH4 is used in smart home, industrial automation, low-power wireless nodes, and edge devices that require Matter or Thread protocols. Key examples include smart light switches, thermostats, and sensor nodes .