The PIC18F27Q43-E/SP is an 8-bit microcontroller (MCU) manufactured by Microchip and is part of their PIC18F family of microcontrollers. The device contains 128KB of Flash memory for programs and data storage, 8KB of RAM, 1KB of EEPROM, 12-bit ADC2, 5-bit DAC, Comparator, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, EUSART, SPI/I2C, IDLE/DOZE/PMD peripherals. It also contains clock options, watchdog timer, low-power modes, sleep features, and DMA channel selection. It has a maximum operating frequency of 20MHz. It is suitable for applications that require low power and/or memory constraints.