PIC16F747-I/P
PIC16F747-I/P - 8-Bit 20MHz Flash MCU | Microchip Technology
The Microchip Technology PIC16F747-I/P is an 8-bit CMOS flash microcontroller rated up to 20 MHz, with 7 KB of program memory, 368 bytes of RAM, and 36 I/O pins in a 40-pin through-hole DIP package. It integrates 14 channels of 10-bit analog-to-digital conversion, three timers, three Capture/Compare/PWM functions, USART, and a synchronous serial port configurable for SPI or I²C. The -I grade denotes the industrial temperature option, while /P identifies the plastic through-hole package.
A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals in one device. The PIC16F747 belongs to the PIC16 family of 8-bit RISC microcontrollers and sits within the broader embedded-controller and semiconductor hierarchy. Its combination of Flash program memory, serial communications, analog measurement, and PWM makes it suitable for control systems requiring broad peripheral integration in a single device.
Verified product information identifies 4K × 14 words of Flash program memory, 368 bytes of RAM, 36 I/O lines, and a 20 MHz maximum clock. Fourteen 10-bit ADC channels provide direct acquisition of analog sensor signals, while three timers and three Capture/Compare/PWM modules support timing, waveform generation, motor control, and industrial control functions. The USART supports asynchronous serial communication, and the synchronous serial interface can operate as three-wire SPI or two-wire I²C.
The PIC16F747-I/P is based on the Microchip PIC16 architecture and uses Harvard-style organization, separating program and data memory access. Its integrated Flash memory supports in-circuit programming and is suitable for firmware that must be updated during production or maintenance. The 10-bit ADC resolution balances measurement precision against microcontroller throughput and power consumption, while dedicated PWM peripherals reduce software overhead in repetitive timing tasks.
Typical applications include industrial process monitoring, motor and actuator controllers, data loggers, environmental monitoring, instrumentation, and compact embedded control panels. The 36 I/O lines allow digital inputs, outputs, and peripheral functions to be distributed across a control board, while the 14-channel ADC supports multiple sensors. The same package also accommodates communication with displays, sensors, memory devices, and host controllers.
For new PCB designs, engineers should verify the complete pin assignment, oscillator requirements, programming interface, and decoupling recommendations in the manufacturer datasheet before layout. For an existing PIC16F747-I/P board, firmware and peripheral configuration are the primary replacement constraints because the industrial temperature grade, 20 MHz ceiling, Flash size, RAM size, and 40-pin DIP footprint define the usable replacement envelope.
This page combines verified manufacturer and distributor information, practical engineering guidance, a 40-pin pinout, and comparison-oriented product analysis. It also distinguishes confirmed data from specifications that require confirmation, helping engineers evaluate sourcing, PCB compatibility, and design reuse without relying on unsupported assumptions.
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