The PIC18F258-I/SP is an 8-bit microcontroller from Microchip Tech. It is a member of the PIC18 family and is based on the RISC architecture. It features a 32KB flash memory and operates at 5V. This microcontroller is housed in a 28-pin SPDIP package and is provided in a tube packaging for convenient storage and transportation. It offers a wide range of peripherals and features, making it suitable for various applications requiring low-power and high-performance computing.