48 MHz RXv2 with 256 KB Flash — the mid-range RX140 sweet spot
The Renesas R5F51406BGFL#10 is a 32-bit single-core microcontroller from the RX140 series, built around the RXv2 CPU core clocked at 48 MHz.
Peripheral integration — CAN, touch, and security on one die
This MCU integrates a CANbus controller, capacitive touch sensing, AES cryptography, a true random number generator (TRNG), DMA, LVD, POR, PWM, temperature sensor, and a watchdog timer. For a control node that needs CAN connectivity and encrypted firmware updates, the R5F51406BGFL#10 eliminates the external CAN transceiver interface logic and a separate security coprocessor. The 11-channel 12-bit ADC covers analog sensor inputs, while 39 GPIOs in the 48-LQFP package leave room for a local display or keypad alongside the bus interface.
For a BOM that needs a 32-bit MCU with CAN and industrial temperature range, this part is qualified for new designs without a near-term obsolescence risk. The RX140 series is Renesas's current mid-range offering, so roadmap continuity and toolchain support are expected through the product's service life.
This part is available to source through independent distribution. A quote request locks the current market position.