MICROCHIP PIC16F648A 8-Bit Flash Microcontroller, 20MHz, 18-Pin DIP

The MICROCHIP PIC16F648A-I/P is a high-performance, 8-bit, fully-static Flash-based CMOS microcontroller, designed for robust and efficient embedded control applications. It is built on a reliable Harvard architecture, which utilises separate instruction and data buses. This design allows for a 14-bit wide instruction word paired with an 8-bit wide data path, enabling efficient processing. A two-stage instruction pipeline permits most instructions to execute in a single cycle, ensuring swift operation for time-critical tasks.

Key integrated features significantly reduce the need for external components, thereby enhancing overall system reliability and minimising power consumption—a critical factor for battery-powered designs. The microcontroller core is enhanced with an eight-level deep stack and supports multiple internal and external interrupt sources for responsive event handling. It is supported by a reduced instruction set of 35 commands and a large register set, providing flexibility for programmers.

Core Features & Peripherals

• On-Chip Memory: Includes 7KB of Flash program memory and 256 bytes of EEPROM data memory for non-volatile storage.
• Clock & Timing: Features a 4MHz internal oscillator, a watchdog timer with its own independent oscillator, and a low-speed clock mode for power-sensitive operations.
• Communication & Control: Equipped with a USART for serial communication, a capture/compare/PWM module, and two comparators with a programmable voltage reference.
• Robust Operation: Includes essential reliability features such as brown-out reset, power-on reset, programmable code protection, and programmable weak pull-ups on Port-B.
• Flexible Programming: Supports In-Circuit Serial Programming™ (ICSP) via just two pins and low-voltage programming for development convenience.

Housed in an 18-pin Dual In-line Package (DIP), it is ideal for through-hole PCB