Renesas Electronics RH850/P1x series MCUs

Renesas Electronics has released the RH850/P1x Series automotive chassis 32-bit MCUs, which utilise a 40 nm process. The series is suitable for electrical power steering, brake systems and other chassis systems.

The use of the company’s metal oxide nitride oxide silicon (MONOS) structure makes possible fast data read performance alongside low power consumption. This means the use of a standard QFP package and a single power supply with integrated core voltage generation regulator is possible.

Designed for chassis systems requiring a high fault-detection rate and short control cycles, the series integrates various fault-detection functions. The CPU employs a lockstep system. An error checking and correcting function detects and corrects data errors affecting memory. There are also functions that allow system-level diagnostics of the timers, ADC, serial communication and other modules. The self-test function detects faults affecting the fault-detection functions themselves. The error control module allows users to manage error signal input from the various modules.

The series incorporates two units of the TSG3 (Timer S Generation 3), a timer designed to improve the motor control performance of chassis systems. For serial communication, it retains the CAN protocol engine of previous Renesas products and includes RS-CAN, which increases the number of transmit and receive message buffers while making the buffers easier to use.