PIC18F24/25Q24 Microcontrollers Microchip Technology PIC18F24/25Q24 Microcontrollers are part of the PIC18-Q24 microcontroller family of 28/40/44/48-pin devices for sensor-interfacing, real-time control, and communication applications. The PIC18F24Q24 offers 16KB of memory, 1KB of Data SRAM, and 512B of EEPROM. Meanwhile, the PIC18F25Q24 provides 32KB of memory, 2KB of Data SRAM, and 512B of EEPROM. The devices have 24x I/O pins, including four MVIO pins powered by VDDIO2.