64-LQFP footprint and board integration
The R5F51103AGFK#30: The 64-LQFP package (14x14 mm body, 0.8 mm pitch) with 50 usable I/O routes comfortably on a 2-layer board for simple sensor-actuator nodes, though a 4-layer stack-up with a dedicated ground plane gives cleaner return paths for the 12-bit ADC channels.
32 MHz RX core with 64 KB flash ceiling
The 32-bit RX core at 32 MHz delivers roughly 40-50 DMIPS — enough for a PID loop at 10 kHz, Modbus RTU polling, or a basic UI with a character LCD. The 64 KB flash (64K x 8) and 10 KB RAM budget means the firmware stack needs to stay lean; a full RTOS with TCP/IP stack will crowd the flash unless the application code is trimmed. The LVD and POR blocks handle brown-out and power-on sequencing without an external supervisor IC.
Industrial temperature grade and peripheral set
The 14-channel 12-bit ADC with internal reference covers analog inputs like thermistor or pressure sensor readings without an external converter. On-chip DMA offloads the CPU for data transfers between peripherals and memory — useful for moving ADC results to RAM without cycle-stealing the core during control loops. The PWM timer block drives simple motor or LED dimming loads.
Active lifecycle and compliance
ROHS3 compliant. Sourced through authorized and independent distribution channels.