nRF5340 vs CC2642R

nRF5340 vs CC2642R: Nordic's BLE 5.3 Dual-Core Platform vs TI's Autonomous-RF BLE Specialist

The nRF5340 and CC2642R are professional-grade BLE SoCs targeting demanding IoT applications from different architectural generations. Nordic's nRF5340 maximizes protocol capability — BLE 5.3, LC3 codec and Auracast." data-category="LE Audio">LE Audio, Thread, USB, and dual-core isolation. Texas Instruments' CC2642R prioritizes BLE power efficiency through an autonomous RF core achieving industry-leading radio power figures for pure BLE industrial deployments.

Overview

nRF5340 — dual 128/64 MHz Arm Cortex-M33 cores, 1.25 MB Flash, 576 KB RAM, BLE 5.3 + 802.15.4, USB 2.0, PSA Level 2 TrustZone.

CC2642R (Texas Instruments) — 48 MHz Arm Cortex-M4F application core plus an autonomous Cortex-M0 RF core, 352 KB Flash, 256 KB RAM, BLE 5.0. The autonomous RF core executes all BLE MAC and PHY operations completely independently — the application M4F is never interrupted by radio events, enabling both superior timing determinism and industry-leading BLE radio power efficiency.

Key Differences

• BLE version: nRF5340 supports BLE 5.3 — LE Audio isochronous channels, Advertising">Direction Finding, extended advertising, PAwR, Connection Subrating. CC2642R supports BLE 5.0 — Coded PHY and 2M PHY available but all BLE 5.1–5.3 advanced features absent.
• RF core: CC2642R's autonomous M0 RF core achieves BLE TX at 6.1 mA and RX at 5.9 mA at 0 dBm — among the lowest of any BLE SoC. nRF5340's network M33 achieves comparable but slightly higher active radio current.
• Sleep current: CC2642R achieves approximately 0.85 µA standby vs nRF5340's approximately 2–3 µA — TI's meaningful sleep power advantage for multi-year primary-cell deployments.
• Flash: nRF5340 has 1.25 MB vs CC2642R's 352 KB — critical for BLE 5.3 stack, RTOS, and dual-bank OTA coexisting comfortably.
• Multi-protocol: nRF5340 supports BLE 5.3 + 802.15.4 concurrently; CC2642R is BLE-only.
• USB: nRF5340 has USB 2.0 FS; CC2642R has no USB.
• LE Audio: nRF5340 supports isochronous channels with Nordic's mature LC3, BAP, CAP, and MCP stack; CC2642R's BLE 5.0 cannot support LE Audio profiles.
• RAM: nRF5340 has 576 KB vs CC2642R's 256 KB — nRF5340 supports more complex multi-stack RTOS-based applications.

Use Cases

When nRF5340 Excels

• LE Audio earbuds, hearing aids, and broadcast audio leveraging BLE 5.3 isochronous channels and Nordic's mature LC3/BAP/CAP stack.
• Thread gateway accessories needing concurrent BLE 5.3 commissioning and Thread mesh with dual-core isolation.
• USB + BLE devices where USB HID, CDC, or DFU runs alongside BLE.
• Large OTA-capable firmware: 1.25 MB accommodates BLE stack, bootloader, and complex application with dual-bank update buffer.

When CC2642R Excels

• Industrial BLE sensors on primary cells targeting 5–10 year battery life — the 0.85 µA sleep current saves meaningful battery capacity versus nRF5340 over multi-year deployment.
• TI SimpleLink ecosystem integration with existing TI-RTOS and Code Composer Studio toolchains.
• Dense BLE networks where the RF core's autonomous scheduling reduces latency jitter in time-critical BLE connection events.
• Industrial safety certifications where TI's IEC 62443 documentation supports multi-decade product certification cycles.

Verdict

The nRF5340 is the broader, more capable platform — LE Audio, BLE 5.3 features, Thread, USB, larger Flash, and dual-core PSA security make it right for complex multi-protocol or audio products. The CC2642R wins specifically in pure BLE power efficiency (especially sleep current) and TI-ecosystem industrial designs where the autonomous RF core's deterministic scheduling is a genuine architectural advantage. For a BLE-only industrial sensor on primary batteries with a decade-long deployment horizon, the CC2642R remains competitive despite the BLE spec gap. Engineers transitioning from CC2642R to nRF5340 should plan for a BLE stack migration from SimpleLink SDK to nRF Connect SDK — a non-trivial effort, but one that unlocks LE Audio, BLE 5.3 advanced features, and access to Nordic's broader community support going forward.