The R5F51103AGFM#30: Surface-mount 64-LQFP (10x10 mm) and 64-LFQFP are footprint-compatible; the LFQFP variant has a thinner body for low-profile designs, but the same pad layout.
Peripheral set for wired control and local intelligence
I²C, SCI (UART), and SPI cover the common fieldbus and sensor interfaces — an SCI channel handles RS-485 for Modbus, while SPI talks to an external ADC or display controller without bit-banging. On-chip DMA, LVD, POR, PWM, and WDT offload the CPU: the PWM drives a half-bridge directly, the LVD triggers a safe shutdown on brownout, and the WDT resets the system if the control loop stalls. 50 general-purpose I/O in the 64-pin package leave enough pins for a parallel LCD interface, keypad matrix, and status LEDs alongside the serial buses.
Active lifecycle and compliance
Suitable for new designs and long-production programs.