Renesas introduces low-power Bluetooth low energy SoC for automotive applications
Renesas Electronics Corporation has introduced a new Bluetooth chip that combines a radio transceiver, an Arm M0+ microcontroller, memory, peripherals and security features in a compact SoC design. The DA14533, the first automotive-qualified device in the company’s Bluetooth Low Energy system-on-chip (SoC) family, includes advanced power management features to simplify system integration and reduce power consumption. With its software stack qualified against Bluetooth Core 5.3 and support for extended temperatures, developers can jump-start projects in applications from tire pressure monitoring and keyless entry to wireless sensors and battery management systems.
The device includes an integrated DC-DC buck converter, which accurately adjusts the output voltage according to system requirements. Active system power consumption is lower than comparable devices in the market, requiring only 3.1mA during transmission and 2.5mA during reception. In hibernation mode, the current drops to 500nA. These power management and power-saving features help extend the operational life of small-capacity battery-powered systems and meet the stringent power requirements of tire pressure monitoring systems’ mission profile.
The DA14533 is an AEC-Q100 Grade 2 qualified device, which means the device has passed strict testing to sustain quality and reliability in harsh automotive environments. Moreover, the device’s extended temperature range (-40 to +105°C) ensures reliable performance in demanding conditions, making it ideal for automotive and industrial systems where stability and durability are essential. Qualified against Bluetooth Core 5.3 specifications, the device contains the latest security features to safeguard connected devices from various threats.
Similar to other Bluetooth LE SoC devices in the SmartBond Tiny family, the DA14533 only requires 6 external components.
A single external crystal oscillator (XTAL) is used for both active and sleep modes, eliminating the need for a separate oscillator for sleep mode. Its ultra-compact design – available in a WFFCQFN 22-pin 3.5 x 3.5 mm package – makes the device the smallest automotive Bluetooth LE SoC on the market. With its compact design and low eBOM, the device integrates seamlessly into space-constrained systems, reducing overall system costs and accelerating time-to-market for customers.
The DA14533 is available today, along with the Bluetooth Low Energy SoC Development Kit Pro. The kit includes a motherboard, daughterboard, and cables to facilitate application software development. The daughterboard is also available by itself to simplify development.
