This highly integrated solution supports the full Bluetooth® 4.2 features. As a SmartBond device, it offers the highest performance, lowest power consumption and smallest footprint. Delivering processing capacity when you need it and saving power when you don’t, it can manage multi-sensor arrays and enable always-on sensing. Plus, our SmartSnippets™ tooling helps you optimize your software for power consumption.

The DA14681 system-on-chip (SoC) includes Flash memory, offers unlimited execution space and enables Over-the-Air (OTA) updates. With an integrated power management unit (PMU) that includes system power rails, a battery charger and a fuel gauge, it supports rechargeable batteries natively and can power a complete wearable system. Meanwhile, a dedicated hardware crypto engine delivers banking-level security (including Apple HomeKit support) with end-to-end encryption to keep personal data safe.

The 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 Low Energy (Bluetooth 4.2 specification)
  • Arm® Cortex®-M0 application processor
  • Flexible memory architecture: 64kB One-Time-Programmable (OTP) memory, 128kB Data SRAM, 16kB Cache SRAM, 128kB ROM
  • Dedicated hardware crypto engine
  • Integrated battery and system PMU
  • Power supply 1.7V - 4.75V
  • 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




  • Wearable devices (multi-sensor): Fitness/Activity trackers, sport watches, smart watches
  • Virtual reality
  • Smart home
  • Consumer appliances
  • Home automation
  • Voice-controlled remote controls
  • Rechargeable keyboards
  • Toys
  • Industrial automation


Design & Development

Software & Tools

Software & Tools

Software title
Software type
SmartBond™ Development Tools
SmartSnippets™ Studio is a royalty-free software development platform for SmartBond™ devices.
Software Package Renesas
1 item

Software Downloads

Type Title Date
Software & Tools - Other Log in to Download PDF 1.73 MB
Software & Tools - Software Log in to Download ZIP 15.51 MB
Software & Tools - Other Log in to Download ZIP 177 KB
Software & Tools - Other Log in to Download ZIP 2.59 MB
Software & Tools - Software Log in to Download ZIP 434 KB
Software & Tools - Software Log in to Download PDF 618 KB
Software & Tools - Software Log in to Download ZIP 14.42 MB
Software & Tools - Other PDF 293 KB
8 items

Sample Code

Boards & Kits

Boards & Kits