Renesas DA14681-01A9DEVKT-P

Overview

DA14681-01A9DEVKT-P from Dialog Semiconductor is a Bluetooth 4.2-compliant development kit based on the DA14681 WL-CSP53 SoC, integrating an ARM Cortex-M0 processor (30 μA/MHz, up to 96 MHz), hardware crypto engine (AES-256, SHA-512, ECC), and PMU with Li-ion charger and fuel gauge - designed for ultra-low-power wearable and IoT prototyping.

For engineers reviewing the DA14681-01A9DEVKT-P datasheet, DA14681-01A9DEVKT-P pinout, DA14681-01A9DEVKT-P application, or DA14681-01A9DEVKT-P equivalent, this kit enables rapid evaluation of Bluetooth LE connectivity, multi-sensor fusion, secure OTA updates, and USB-powered battery management in space-constrained rechargeable devices.

Technical Context

The DA14681-01A9DEVKT-P implements a complete reference design around the DA14681 SoC, featuring integrated RF (–93 dBm sensitivity, 0 dBm output, 50 Ω antenna interface) and full peripheral support including dual UARTs, two I²C interfaces, 8-channel 10-bit ADC (11.5 ENOB), PDM/I²S audio, and IR PWM. It exposes all 21 WL-CSP GPIOs via test points and headers.

Its hardware architecture includes a buck DC-DC converter (1.7–4.75 V input), programmable brownout detection, USB FS device interface with charge detection, and three white LED drivers - enabling direct integration into battery-powered wearables with voice, motion, and environmental sensing capabilities.

Key Specifications

Availability

DA14681-01A9DEVKT-P is available at Aetrix Electronics and suitable for Bluetooth LE wearable prototyping, smart home sensor node development, and rechargeable IoT edge device validation requiring stable component supply and full-stack evaluation capability.

Supply support for DA14681-01A9DEVKT-P 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 targets ultra-low-power Bluetooth LE applications in wearables, smart home, and industrial IoT - prioritizing battery life, security, and system-level integration over raw compute throughput.

FAQ

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

The DA14681-01A9DEVKT-P is a development kit for the DA14681 Bluetooth LE SoC, enabling rapid evaluation of secure, low-power wireless connectivity in wearables and IoT devices. It provides access to all peripherals - including the hardware crypto engine, PMU with fuel gauge, and 21 GPIOs - and supports full firmware development using Dialog's SmartSnippets Studio and SDK. The DA14681-01A9DEVKT-P includes onboard debugging and USB power delivery.

Does the DA14681-01A9DEVKT-P support over-the-air (OTA) firmware updates?

Yes, the DA14681-01A9DEVKT-P supports secure OTA firmware updates via its Bluetooth LE stack and integrated AES-256/ECC hardware crypto engine. The underlying DA14681 SoC executes code from OTP or external Flash, and Dialog's SDK provides validated OTA update frameworks with signature verification. This ensures authenticated, encrypted firmware delivery directly to the DA14681-01A9DEVKT-P during field deployment.

What battery types does the DA14681-01A9DEVKT-P support?

The DA14681-01A9DEVKT-P supports Li-ion, Li-polymer, coin cell, NiMH, and alkaline batteries through its integrated PMU. Its on-chip charger accepts up to 5.0 V input with programmable charge curves, and the high-accuracy fuel gauge monitors state-of-charge in real time. USB charge detection and protection are built-in, allowing direct charging from standard USB ports - critical for wearable prototypes using the DA14681-01A9DEVKT-P.

Can the DA14681-01A9DEVKT-P interface with analog sensors?

Yes, the DA14681-01A9DEVKT-P exposes the DA14681's 8-channel 10-bit ADC with averaging capability, achieving 11.5 ENOB - suitable for precision analog sensor interfacing such as temperature, accelerometer, or ambient light sensors. It also includes a dedicated temperature sensor and supports PDM microphones via hardware sample rate conversion, making the DA14681-01A9DEVKT-P ideal for multi-sensor wearable validation.

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

Yes, the DA14681-01A9DEVKT-P supports Apple HomeKit certification when configured with Dialog's certified BLE stack and MFi-compliant firmware. The DA14681 SoC meets Bluetooth 4.2 requirements including Secure Connections and LE Data Length Extension, and its hardware crypto engine enables end-to-end encryption required by HomeKit. Developers use the DA14681-01A9DEVKT-P to validate interoperability before formal MFi submission.