New Bluetooth Low Energy SoC saves power in automotive applications
The DA14533 from Renesas has a small footprint and helps reduce bill-of-materials cost, bringing value to a wide range of automotive functions from tire pressure monitoring to battery management systems.
Renesas has introduced its first AEC-Q100 Grade 2 qualified Bluetooth® wireless communications chip which combines a radio transceiver, an Arm® Cortex®-M0+ microcontroller, memory, peripherals and security features in a compact system-on-chip (SoC) design.Â
The DA14533 includes advanced power management features to simplify system integration and reduce power consumption. With its software stack, radio transceiver and baseband processor qualified for compliance with the Bluetooth Core 5.3 specifications, the DA14533 enables developers to get started quickly on projects for automotive wireless applications.
A member of the SmartBond Tiny family, the DA14533 includes an integrated dc-dc buck converter, which accurately adjusts the output voltage to match system requirements. Active system power consumption is lower than that of comparable devices in the market: the SoC only draws 3.5 mA in Transmit mode at 0 dBm, and 2.1 mA in Receive mode, when operating from a 3 V battery power rail. In hibernation mode, with no clock running, current drops to 550 nA.Â
These power management and power-saving features help to extend the run-time of small battery-powered systems, and meet the strict power requirements of tire pressure monitoring systems’ mission profile.
Like other Bluetooth LE SoC devices in the SmartBond Tiny family, the DA14533 only requires six external components. A single external crystal oscillator is used for both active and sleep modes.