Create next-generation Bluetooth low energy solutions without compromising functionality or battery life with the SmartBond DA14681 from Dialog, 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.
Product Brief
Video
Block Diagram
| Features |
|
- Supports the full Bluetooth 4.2 features
- 32-bit ARM® Cortex®-M0 microcontroller:
- Low power consumption, just 30 μA / MHz
- Dynamically controllable clock frequency from 32 kHz to 96 MHz
- Delivers up to 84 Dhrystone MIPS
- 4-way associative cache controller with 16 kB cache RAM memory
- Dedicated application processor hardware encryption engine
- Flexible memory architecture
- 64 kB OTP
- 128 kB data SRAM
- 16 kB cache SRAM
- 128 kB ROM
- Execution from external QSPI Flash up to 32 MB
- Outstanding RF performance
- 0 dBm output power
- -93 dBm sensitivity
- Integrated balun
- 50 Ω matched single-wire antenna interface
- 3.4 / 3.1 mA Tx / Rx at 3 V
- Best-in-class 93 dBm link budget
- Coexistence interface for multi radio systems
- Available packages
|
- Integrated PMU
- Integrated Buck DC-DC converter (1.7 V - 4.75 V)
- Three power supply pins for external devices
- Supports Li-Polymer, Li-Ion, coin cells, NiMH, and alkaline batteries
- Charger (up to 5.0 V) with programmable curves
- High accuracy state-of-charge fuel gauge
- Programmable threshold for brownout detection
- USB charge detection and protection
- Extensive selection of digital and analog interfaces
- 37 (AQFN) or 21 (WL-CSP) general purpose I/Os with programmable voltage levels
- Quad-SPI Flash interface
- Two UARTs, one with hardware flow control
- Two SPI+™ interfaces
- Two I²C bus interfaces at 100 kHz, 400 kHz
- Three-axis capable quadrature decoder
- PDM interface with HW sample rate converter (2 mics or 2 speakers)
- I²S/PCM master/slave interface up to 8 channels
- Keyboard scanner with de-bouncing
- Infrared (IR) interface (PWM)
- USB Full Speed (FS) device interface
- 8-channel 10-bit ADC with averaging capability achieving 11.5 ENOB
- Three matched white LED drivers
- Temperature sensor
|
| Applications |
|
- Multi-sensor wearable devices
- Fitness / activity trackers
- Sport watches
- Smartwatches
- Smart home
- Consumer appliances
|
- Home automation
- Voice-controlled remote controls
- Rechargeable keyboards
- Toys
- Industrial automation
|
Dialog, the Dialog logo and SmartBond are trademarks of Dialog Semiconductor plc or its subsidiaries. All other product or service names are the property of their respective owners. © Copyright 2016 Dialog Semiconductor All rights reserved.
