SmartBond™ DA14681

SmartBond™ DA14681

Single-chip solution for wearables and other rechargeable devices

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Bluetooth® Low Energy SoC with Unparalleled Integration and Flexibility

Create next-generation Bluetooth low energy solutions without compromising functionality or battery life with the SmartBond™ DA14681, the world’s first single-chip solution in volume production that provides connectivity for rechargeable devices, including smart home and other emerging Internet of Things (IoT) devices. DA14681 delivers the highest performance, lowest power consumption, smallest footprint and lowest system cost.

This highly integrated solution supports the latest Bluetooth 4.2 standard. An ARM® Cortex™ M0 processor, with various embedded memory options, delivers flexible processing power when you need it and saves power when you don’t, enabling the management of multi-sensor arrays and always-on sensing. Its integrated PMU can efficiently power up to three external devices in addition to an on-chip charger and fuel gauge, allowing DA14681 to recharge batteries over a USB interface, while a dedicated hardware crypto engine delivers banking-level security with end-to-end encryption to safeguard personal data.

DA14681 is the second member of a device family that includes the popular ultra-low power DA14680. In addition to DA14680’s functionalities, DA14681 delivers unparalleled flexibility offering virtually unlimited computing space to software application developers by enabling the latter to expand the size of their code execution space through a flexible external memory interface.


  • Bluetooth 4.2 (core and optional specification)
  • Cortex M0 application processor
  • Flexible memory architecture: 64 kB OTP memory, 128 kB Data SRAM, 16 kB Cache SRAM, 128 kB ROM, execution from external QSPI Flash up to 32 MB
  • Dedicated HW crypto engine
  • Integrated battery and system PMU
  • Power supply 1.7 -5 V
  • Single pin RF I/O
  • Rich set of analog and digital peripherals


  • Processing power on-demand
  • Unlimited execution space
  • High-level security
  • PMU can power a complete wearable system
  • Advanced interfaces for voice commands and audio support
  • World-class radio performance
  • Sensor hub functionality
  • Optimized for flexibility, lowest power consumption, smallest footprint and lowest system cost


  • Wearables
  • Virtual Reality
  • Smart Home
  • HID
  • Other rechargeable devices
AQFN60, 6 x 6 x 0.9 mm
WL-CSP53, 3.4 x 3.0 x 0.5 mm

Just add sensors!

The SmartBond DA14681 includes everything you need to create context-aware, multi-sensor wearables. Just add the relevant sensors for your specific application.

Lowest power consumption

All the hardware in the DA14680 is designed to save you power. That includes the 30 μA / MHz ARM Cortex-M0 application processor, integrated sensor hub functionality and hardware crypto engine. With an integrated PMU including system power rails, a battery charger and fuel gauge, it supports rechargeable Li-Ion and Li-Polymer batteries natively and can power a complete wearable system. Plus our SmartSnippets™ tooling helps you optimize your software to reduce power consumption even further and speed up your time to market.


Processing power on demand

The DA14680 delivers outstanding application processor performance – up to an impressive 84 DMIPS. What’s more, its unique FlexPower feature ensures that performance is there when you need it and saves you power when you don’t. You can dynamically control the processor speed through software, from 0 to 96 MHz to match your application’s requirements.


Flexibile memory

For maximum design freedom, the DA14681 can execute code from Flash or one-time programmable (OTP) memory. Flash offers the potential for unlimited execution space and over-the-air (OTA) updates, while OTP provides a simple cost-down path.


Maximum security

The dedicated hardware encryption engine includes support for hashing functions (SHA-512), symmetric (AES-256) and asymmetric cryptography algorithms (ECC) and a true random number generator. It delivers banking-level security with end-to-end encryption to keep personal data safe – while reducing power consumption.


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