The PIC16F631-I/SO is an 8-bit microcontroller manufactured by Microchip. It consists of a 1.75KB Flash Memory, 64-Bytes of RAM, 18 I/O pins and is designed to operate in an industrial temperature range. The chip is packaged in a SOIC (Small Outline Integrated Circuit) package. It can be used in a wide range of applications requiring programmable logic, providing a cost-effective solution for a wide variety of design requirements. The chip is suitable for use in low power applications, including ultra-low standby current mode. It features a modified Harvard architecture, which helps to maximize code execution speed. It can be programmed using many software development systems, including Microchip’s MPLAB® IDE. The PIC16F631-I/SO provides versatile application flexibility by allowing user-selectable operating modes. It also features several peripheral functions to help simplify design tasks, including USART, ECCP, enhanced capture/compare/PWM (ECP) with selectable output modes, five capture/compare/PWM outputs with programmable resolution, and two external interrupts. In addition, built-in I/O features such as pull-up resistors, slew-rate limiting, and direction control allow users to maximize design flexibility.