32 MHz RX core — what it means for the control loop
The R5F51101AGFM#30 is a Renesas RX110 32-bit MCU clocked at 32 MHz, built around the RX core. It packs 32 KB of Flash and 10 KB of RAM, enough for a single motor-control loop, a sensor-fusion algorithm, or a Modbus RTU gateway node. The 50 GPIOs give headroom for parallel sensor inputs and a local display interface. On-chip peripherals include DMA, LVD, POR, PWM, and WDT — the PWM block can drive a half-bridge directly, and the LVD protects against brownout on a 1.8 V to 3.6 V supply rail. The 14-channel 12-bit ADC captures analog feedback from current shunts or thermistors without an external converter. Connectivity covers I²C, SCI (UART), and SPI, so it ties into common sensor modules and serial displays. The internal oscillator eliminates the external crystal for cost-sensitive builds, though an external clock can be fed in for tighter timing on the SCI baud rate.
Industrial temperature range — where it lives on the board
Rated for -40°C to 105°C ambient. The 64-LQFP package (10x10 mm) is a standard footprint for industrial control boards. Supply range from 1.8 V to 3.6 V. The POR and LVD blocks handle power-up sequencing and brownout recovery.
Active lifecycle — no LTB risk on this BOM line
The part is ROHS3 compliant, so it passes EU material restrictions without an exemption. Store the reels in a dry cabinet — the 64-LQFP is moisture-sensitive, and a bake cycle before reflow adds cost if the seal is broken.