20 MHz 16-bit core with on-chip LCD and LIN
The R5F2L36AANFP#V2 is a 16-bit R8C microcontroller from the R8C/Lx/36A series, clocked at 20 MHz. It integrates 96 KB of Flash program memory, 10 KB of RAM, and 4 KB of data EEPROM on a single die. On-chip peripherals include a segment LCD driver, programmable POR, PWM, voltage detect, and a watchdog timer — enough to drive a segmented display panel and handle sensor inputs without external glue logic. Connectivity covers I²C, LINbus, SIO, SSU, and UART/USART, making it a fit for automotive body-control modules, industrial HMI panels, and appliance control boards where a serial bus links the MCU to sensors or a gateway.
Memory map and peripheral headroom
96 KB Flash (96K x 8) and 10 KB RAM leave room for a segmented LCD driver library, a LIN stack, and a modest data-logging buffer. The 10-channel 10-bit ADC and two 8-bit DAC channels handle analog sensor inputs and analog output trim — typical for a thermostat or a pump controller that reads a thermistor and drives a 0-10 V setpoint. 52 general-purpose I/O lines in the 64-LQFP package give enough pins for a parallel LCD data bus, keypad matrix, and status LEDs while leaving spare GPIO for future firmware features.
Supply, temperature, and package realities
The internal oscillator eliminates an external crystal for most applications, though the clock tree supports an external source if tighter timing is required. The -20 °C to +85 °C operating range covers indoor industrial enclosures and automotive cabin applications. The 64-LQFP (10x10 mm body) is a fine-pitch package that reflows well with a standard hot-air profile; pin 1 is clearly marked at the corner for visual alignment. RoHS non-compliance means this part contains lead — verify your BOM's exemption status for EU markets. The part is otherwise fully active per the manufacturer's lifecycle status.