Renesas Electronics has announced that it is developing new microcontrollers (MCUs) that will support the recently released Bluetooth 5.3 Low Energy (LE) Specification. The new devices will be part of the Renesas Advanced (RA) Family of 32-bit Arm Cortex-M microcontrollers, joining the RA4W1 Bluetooth 5.0 LE device introduced last year. Renesas expects to have first samples of the new MCUs in the first quarter of 2022.