nRF54H20 vs EFR32BG22

nRF54H20 vs EFR32BG22

Overview

The Nordic Semiconductor nRF54H20 and the Silicon Labs EFR32BG22 (Blue Gecko 22) are two of the most capable professional BLE SoCs on the market today, both targeting applications demanding ultra-low power, strong security, and long-term supply chain reliability. The EFR32BG22 is Silicon Labs' mainstream BLE 5.2 SoC combining an Arm Cortex-M33 core with their Secure Vault security subsystem — a certified hardware security module offering FIPS 140-2 Level 3 equivalent protection with tamper detection. The nRF54H20 is Nordic's latest flagship BLE 5.4 multi-core SoC with the highest performance and feature density in the Nordic lineup, including full LC3 codec and Auracast." data-category="LE Audio">LE Audio support and a dedicated security processor.

Both chips are regularly selected by engineering teams building professional products for smart home, industrial, and medical markets. The comparison often hinges on security certification requirements versus BLE feature generation, and ecosystem fit versus ecosystem learning curve.

Key Differences

• BLE specification: The nRF54H20 supports BLE 5.4 including LE Audio (LC3 codec), Auracast broadcasting, Isochronous Channels, and extended BLE 5.4 features. The EFR32BG22 supports BLE 5.2 — a solid, professionally validated specification covering most production requirements, but without BLE 5.4 additions.
• Secure Vault: Silicon Labs' Secure Vault is a certified secure subsystem offering FIPS 140-2 Level 3 security with tamper detection hardware, secure key storage with anti-cloning protection, and independently verified attestation. For regulated markets — payment terminals, smart meters, medical devices with strict security audit requirements — this certification level is a significant differentiator. The nRF54H20's TrustZone and dedicated security processor are robust but do not carry the same independent certification.
• Multi-core versus single-core: The nRF54H20 uses a heterogeneous multi-core design providing dedicated cores for application, network, and security domains — enabling concurrent operation with strong isolation. The EFR32BG22 uses a single Cortex-M33 application core with a separate RF subsystem — simpler and more familiar but with less total processing headroom.
• Memory: The EFR32BG22 has 352 KB Flash and 32 KB RAM — lean but sufficient for many focused BLE applications. The nRF54H20 provides substantially more on-chip memory for complex multi-connection firmware.
• Power efficiency: Both chips achieve world-class low-power figures. Silicon Labs consistently benchmarks the EFR32BG22 at industry-leading BLE connection current — sub-2 µA average in typical connection interval scenarios. Nordic's nRF54H20 achieves competitive power levels with more processing capability per milliwatt.
• Ecosystem: Silicon Labs' Simplicity Studio and Gecko SDK provide professional tooling with strong BLE stack certification. Nordic's nRF Connect SDK (Zephyr-based) is equally mature with comprehensive BLE protocol stack certification and extensive application notes.
• Price: The EFR32BG22 is available in the $3–5 range in volume. The nRF54H20 carries a premium for its multi-core architecture and BLE 5.4 capability.

Use Cases

nRF54H20 is the right choice for: - Products targeting BLE 5.4 features including LE Audio, Isochronous Channels, and Auracast - Applications requiring maximum processing performance across multiple concurrent domains - Next-generation wearables and hearing aids requiring BLE Audio support - New designs starting from scratch without legacy Silicon Labs platform investment

EFR32BG22 is the right choice for: - Regulated applications requiring certified security at FIPS 140-2 Level 3 equivalent — payment security, smart metering, access control - Smart home and industrial BLE devices where Secure Vault tamper detection directly addresses customer security audit requirements - Products already deeply embedded in Silicon Labs' Gecko SDK and Simplicity Studio workflow - BLE 5.2-compatible deployments where memory constraints favor the BG22 footprint and Secure Vault certification is the primary differentiator

Verdict

The EFR32BG22's Secure Vault is a meaningful differentiator for regulated and security-critical markets. When your customer's security audit requires independently certified tamper detection and hardware key protection, the BG22 provides a documented, certified answer that software-based security approaches cannot match. If your product is in the smart home, healthcare, or payment space where security certification directly influences regulatory approval or enterprise customer acceptance, the BG22 is worth serious evaluation. For products targeting BLE 5.4, LE Audio, or requiring the highest processing capability across concurrent domains, the nRF54H20 is the more advanced platform. Security certification requirements versus BLE feature generation often drives this decision more than any other factor.