Chip vs Chip

CC2652R vs WBZ451

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Side-by-side comparison of CC2652R and WBZ451 BLE SoCs.

    
    

      
    

  


  
  
  

    
      

        A
        
CC2652R

      

      

    
    
      

        B
        
WBZ451

      

      

    
  

  

  
  

  






  
  

    

The CC2652R (Texas Instruments) and WBZ451 (Microchip Technology) are both multi-protocol BLE + Zigbee SoCs targeting IoT applications, but they come from different ecosystem traditions and offer different trade-offs in processing power, memory, and development experience.




Overview


CC2652R from Texas Instruments uses a 48 MHz Cortex-M4F + M0 dual-core architecture with 352 KB flash and 352 KB SRAM, supporting BLE 5.1, Thread, Zigbee, and proprietary 2.4 GHz. TI's SimpleLink SDK, SysConfig tool, and extensive application note library make it one of the most well-documented multi-protocol platforms available.


WBZ451 from Microchip Technology is a 64 MHz Cortex-M4 SoC with 1 MB on-chip flash and 128 KB SRAM supporting BLE 5.2 and Zigbee 3.0 simultaneously. It carries Microchip's PIC32 peripheral heritage into a wireless SoC — a 12-bit SAR ADC, hardware crypto engine (AES-256, SHA-256, ECC), multiple UART/SPI/I²C/I²S instances, and 12 12-bit PWM channels round out the peripheral set. The dedicated hardware crypto engine enables device attestation, secure key storage, and encrypted BLE bonding keys without consuming M4 cycles. MPLAB X IDE and the Harmony 3 firmware framework provide drop-in compatibility with existing Microchip embedded project infrastructure. The WBZ451 targets cost-competitive IoT deployments where Zigbee mesh and BLE smartphone provisioning must coexist at a per-unit BOM cost below what competing SiLabs or TI multi-protocol SoCs offer in comparable volume tiers.




Key Differences


    

  • Core: WBZ451 runs a 64 MHz Cortex-M4 (no FPU in base variant); CC2652R runs a 48 MHz Cortex-M4F with hardware FPU — advantageous for floating-point sensor math.
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  • Flash: WBZ451 has 1 MB vs. CC2652R's 352 KB — WBZ451 stores larger firmware images without external flash.
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  • SRAM: CC2652R has 352 KB vs. WBZ451's 128 KB — CC2652R is significantly ahead for memory-intensive applications.
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  • Protocol support: CC2652R adds Thread to BLE + Zigbee; WBZ451 supports BLE 5.2 and Zigbee 3.0 but not Thread natively.
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  • Ecosystem: WBZ451 integrates into Microchip's MPLAB X IDE and Harmony 3 framework — familiar to PIC/PIC32 developers; CC2652R uses TI's Code Composer Studio and SimpleLink SDK.
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  • Hardware crypto: WBZ451 has a dedicated hardware crypto engine supporting AES-256, SHA-256, and ECC; CC2652R relies on software crypto with AES hardware acceleration.
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  • Cost: WBZ451 is positioned as a cost-competitive entry into multi-protocol BLE+Zigbee — typically priced below CC2652R in volume.
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Use Cases


CC2652R Excels At


Thread-enabled Matter devices requiring BLE commissioning alongside Thread mesh participation use the CC2652R's three-protocol (BLE + Thread + Zigbee) capability. WBZ451 cannot serve as a Thread endpoint without significant software development effort.


Sensor-fusion applications requiring float-point math for IMU data processing, pressure sensor temperature compensation, or environmental calibration benefit from CC2652R's hardware FPU — WBZ451's M4 lacks this in base configuration.


WBZ451 Excels At


Zigbee + BLE combo devices for smart home accessories — light switches, dimmers, sensors — where the product needs Zigbee mesh participation and BLE smartphone provisioning but not Thread, and where BOM cost is the primary constraint. WBZ451's 1 MB flash is generous for the combined Zigbee + BLE stack.


Microchip ecosystem integration: Teams already using PIC32 or SAM MCUs for wired functionality can leverage shared MPLAB tooling, Harmony 3 drivers, and potentially the same PCB team for WBZ451 wireless integration — reducing total project risk.


High-volume commodity IoT products — smart plugs, wireless thermostats, Zigbee end devices — where the per-unit cost advantage of WBZ451 compounds across millions of units.




Verdict


The CC2652R is the better platform when Thread support, hardware FPU, and large SRAM are required — particularly for Matter/Thread devices or sensor-fusion workloads.


The WBZ451 is compelling for Microchip-ecosystem teams building BLE + Zigbee devices where cost optimization is paramount and Thread is not a requirement. Its 1 MB flash provides headroom for OTA updates, and its hardware crypto engine adds security features without software overhead.

  

  

  
  

  
  

    




  
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Our comparisons use verified datasheet specifications to create side-by-side tables. Each comparison includes a verdict explaining when to choose each option based on your project requirements.