ESP8684H4X

RF Transceiver ICS Overview

The ESP8684H4X is a multiprotocol module from Espressif Systems featuring a single-core RISC-V MCU with integrated 2.4 GHz Wi-Fi and Bluetooth 5.0 capabilities. It utilizes a QFN 28-pin package measuring 4x4 mm with a height of 0.85 mm. The device includes 4 MB of internal flash memory and supports an operating temperature range of -40°C to +105°C. Key electrical parameters include a maximum clock frequency of 160 MHz, 384 kB program memory, and 400 kB SRAM. It operates within a voltage range of 3 V to 3.6 V, with receive current at 87 mA and transmit current at 335 mA.

RF Transceiver ICS Feature Summary

• Integrates a single-core RISC-V CPU with combined 2.4 GHz Wi-Fi and Bluetooth 5.0 connectivity for IoT applications.
• Provides high integration in a compact QFN-28 surface-mount package with built-in flash storage.
• Supports industrial-grade wide temperature operation suitable for diverse environmental conditions.

RF Transceiver ICS Applications

• Internet of Things (IoT) devices requiring ultra-low-power system-on-chip solutions
• Smart home appliances utilizing Wi-Fi and Bluetooth combo protocols
• Industrial sensor nodes operating within extended temperature ranges

RF Transceiver ICS Procurement Notes

Verify the specific suffix designation against official Espressif documentation to confirm pinout compatibility and memory configuration. Ensure that the procurement channel provides valid RoHS compliance certificates and moisture sensitivity level (MSL) handling instructions. Cross-reference the manufacturer part number with authorized distributor lists to avoid counterfeit components. Confirm that the supplied units match the exact QFN-28 package dimensions and thermal specifications required by the design.

RF Transceiver ICS Selection Notes

Select this component when a compact form factor with integrated Wi-Fi and BLE 5.0 is required alongside a RISC-V processor. Consider the 4 MB flash capacity for firmware storage needs and the 160 MHz processing speed for application performance. Evaluate the QFN-28 package suitability for PCB space constraints and the -40°C to +105°C range for environmental durability. Compare power consumption metrics against alternative modules if battery life is a critical design parameter.

RF Transceiver ICS Part Context

The ESP8684 series represents Espressif's ultra-low-power System-on-Chip solutions designed for Internet of Things applications. This family combines microcontroller functionality with wireless communication capabilities in a highly integrated format. The H4X variant specifically denotes the configuration with 4 MB of internal flash memory. These modules are engineered to reduce bill-of-materials complexity by consolidating processing, memory, and radio functions into a single surface-mount device.

RF Transceiver ICS Replacement Considerations

ESP8684-MINI-1-H4X is listed as a manufacturer-recommended alternative with similar specifications.