Renesas DA14681-01A9DEVKT-B

Overview

DA14681-01A9DEVKT-B from Dialog Semiconductor is a Bluetooth 4.2-compliant development kit for the DA14681 WL-CSP53 ultra-low-power SoC, integrating ARM Cortex-M0 (up to 96 MHz, 84 DMIPS), hardware crypto engine (AES-256, SHA-512, ECC), and PMU with Li-ion charger and fuel gauge - designed for wearable and rechargeable IoT prototyping.

For engineers reviewing the DA14681-01A9DEVKT-B datasheet, DA14681-01A9DEVKT-B pinout, DA14681-01A9DEVKT-B application, or DA14681-01A9DEVKT-B equivalent, this kit enables rapid validation of Bluetooth LE sensor fusion, secure OTA updates, and battery-powered system-level power profiling using SmartSnippets™ tools and on-board debug interface.

Technical Context

The DA14681-01A9DEVKT-B provides full hardware access to the DA14681 SoC in WL-CSP53 package (3.4 × 3.0 mm), including all 21 GPIOs, USB FS interface, PDM/I²S audio paths, 8-channel 10-bit ADC, and three white LED drivers. It integrates onboard SWD/JTAG debug circuitry and supports direct USB power delivery and battery charging via the SoC's integrated PMU.

This kit implements the complete reference design for Bluetooth LE connectivity in space-constrained wearables: RF path includes integrated balun and 50 Ω single-wire antenna interface; power architecture supports Li-Po/Li-ion batteries with programmable charge curves and ±2% fuel gauge accuracy; security subsystem enables end-to-end encrypted data transport using dedicated hardware accelerators.

Key Specifications

Availability

DA14681-01A9DEVKT-B is available at Aetrix Electronics and suitable for wearable prototyping, Bluetooth LE sensor hub development, and rechargeable IoT device validation requiring stable component supply and full production-representative SoC behavior.

Supply support for DA14681-01A9DEVKT-B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Dialog Semiconductor plc is a UK-based fabless semiconductor company specializing in highly integrated mixed-signal ICs for power management, audio, and wireless connectivity.

The SmartBond™ DA1468x product line delivers ultra-low-power Bluetooth LE SoCs optimized for battery-operated wearables and compact IoT endpoints - prioritizing minimal footprint, multi-sensor integration, and banking-grade security without external components.

FAQ

What is the DA14681-01A9DEVKT-B used for?

The DA14681-01A9DEVKT-B is a development kit enabling hardware and firmware evaluation of the DA14681 Bluetooth LE SoC. It supports full-system prototyping for wearables, smart home sensors, and voice-controlled remotes - providing access to all I/Os, USB interface, battery charging circuitry, and debug infrastructure required to validate real-world power, RF, and security performance of the DA14681-01A9DEVKT-B target platform.

Does the DA14681-01A9DEVKT-B include the DA14681 SoC?

Yes, the DA14681-01A9DEVKT-B includes one DA14681 SoC in WL-CSP53 package (3.4 × 3.0 mm, 53-ball) mounted on the board. This matches the production-grade variant specified in Dialog's official documentation and supports identical memory map, peripheral register layout, and power sequencing as shipped devices - ensuring design-in continuity from evaluation to mass production of the DA14681-01A9DEVKT-B platform.

Can the DA14681-01A9DEVKT-B be used for over-the-air (OTA) firmware updates?

Yes, the DA14681-01A9DEVKT-B supports OTA firmware updates via Bluetooth LE, leveraging the DA14681 SoC's 64 kB OTP and 128 kB Data SRAM. Though it lacks internal Flash (unlike DA14680), the kit uses external SPI Flash or host-controlled RAM-based update mechanisms validated by Dialog's SmartSnippets Studio - enabling secure, field-upgradable firmware deployment directly on the DA14681-01A9DEVKT-B hardware.

What debugging interfaces does the DA14681-01A9DEVKT-B provide?

The DA14681-01A9DEVKT-B features an onboard SWD/JTAG debug interface compliant with ARM CoreSight standards, accessible via standard 10-pin Cortex Debug connector. It supports full-speed programming, real-time tracing, and low-power mode debugging - fully compatible with Dialog's SmartSnippets Studio and third-party IDEs like Keil MDK and GCC-based toolchains targeting the DA14681-01A9DEVKT-B SoC.

Is the DA14681-01A9DEVKT-B compatible with Apple HomeKit?

Yes, the DA14681-01A9DEVKT-B enables development of Apple HomeKit-certified accessories through its support for Bluetooth LE 4.2, hardware-accelerated AES-256 encryption, and secure key storage - all required for HomeKit Accessory Protocol (HAP) implementation. Dialog provides HAP reference stacks validated on the DA14681-01A9DEVKT-B platform, confirming interoperability with iOS devices and iCloud synchronization.