Renesas — Smart Lock System Design

Renesas is enabling OEMs to accelerate the development of products in fast-growing markets with the release of a series of system design blueprints combining embedded processing, analog, power, and connectivity components. These system elements draw on products from Renesas and Dialog Semiconductor, a Renesas company.

An example of these ‘Winning Combination’ system designs is a Smart Lock with Super Low-Power Wi-Fi and BLE, a popular application in home and building automation. A smart lock requires a method of user authentication and control via fingerprint recognition or a mobile phone, and to communicate with cloud services using a common wireless interface such as Bluetooth^® or Wi-Fi^® networking.

The Smart Lock Winning Combination implements these functions and more. For wireless connectivity, it features a DA16600 low-power Wi-Fi and Bluetooth Low Energy (LE) module. Designers could instead use a DA16200 low-power Wi-Fi networking system-on-chip (SoC) and/or a DA14531 SmartBond TINY™ Bluetooth LE module. Cloud connectivity can alternatively be provided by an RYZ014A LTE Cat-M1 cellular networking module.

The GreenPAK™ family of programmable devices performs functions such as a motor driver for operating the lock mechanism – the SLG47105 is ideal – and LED control for a simple user interface alongside a DA7280 haptic driver.

The Renesas RX651 32-bit microcontroller is the ideal option for running the algorithm for fingerprint recognition in a fingerprint sensing module. In addition, a Renesas ISL29501 time-of-flight sensor implements proximity sensing, to wake up the smart lock when a user is present.