Simple PIC Programmer: Circuit Diagram & Inspiring Build

Circuit diagram:

Description

This straightforward programmer is capable of interfacing with a variety of devices compatible with software, such as the IC-Prog 1.05 by Bonny Gijzen accessible at www.ic-prog.com. The circuit’s design incorporates elements from the SILICON CHIP “PIC Testbed” project's ISP header, alongside an auxiliary programming voltage source for laptops and other scenarios where the voltage available on the RS232 port is inadequate. This supplemental power is provided by the 3-terminal regulators, REG1 & REG2. The target PIC microcontroller can be easily mounted on a protoboard, eliminating the need for intricate socket wiring to accommodate multiple devices. Successful implementations utilizing this device include the 16F84A, 12C509, 16C765, and numerous other microcontrollers.

Integrated Circuit Details

Integrated circuits, frequently referred to as ICs, are fundamental components within this programmer circuit. Specifically, the 16F84A is a versatile 8-bit microcontroller renowned for its integrated peripherals, including a flash memory element for storing code, a serial communication interface for data exchange, and a timer/counter module for precise timing operations. Its compact size and processing capabilities make it suitable for a wide range of embedded applications. The 12C509 is a serial EEPROM, a type of memory that can be repeatedly written to and erased, commonly employed for storing configuration data or user-defined settings in electronic devices. It offers a cost-effective solution for non-volatile memory needs, allowing data retention even when power is removed. The 16C765 is a serial flash memory, which provides non-volatile storage for code and data, offering faster read/write speeds compared to traditional EEPROM technology. It's often utilized in applications where rapid data access and rewriting are essential, such as boot code or firmware updates.