Microchip PIC16F917-I/P 8-Bit Microcontroller Datasheet and Application Overview

The Microchip PIC16F917-I/P is a member of the versatile PIC16F9xx family, renowned for its robust performance and rich peripheral integration in a 40-pin PDIP package. This 8-bit microcontroller, built on Microchip's enhanced mid-range core with nanowatt technology, is engineered for applications demanding low power consumption, a wide array of I/O capabilities, and dedicated human-machine interface (HMI) functions.

Core Architecture and Key Features

At its heart, the PIC16F917 operates at a maximum frequency of 20 MHz, executing a comprehensive set of 35 single-word instructions. A standout feature is its 8K words of self-programmable Flash memory, providing ample space for application code and enabling field firmware updates. This is complemented by 368 bytes of RAM and 256 bytes of non-volatile EEPROM data memory for critical data storage.

The device is particularly distinguished by its integrated LCD driver module, capable of directly driving up to 96 segments. This makes it an ideal solution for a vast range of consumer appliances, industrial controls, and handheld devices that require a clear numerical or custom graphical display without external driver ICs.

Its peripheral set is extensive, including:

Analog-to-Digital Converter (ADC): A 14-channel, 10-bit ADC for precise sensor data acquisition.

Timers: Multiple timers (Timer0, Timer1, Timer2) for event counting, timing, and PWM generation.

Communication Interfaces: Synchronous Serial Port (SSP) module that can be configured as either SPI or I²C, and an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) for RS-232/RS-485 communications.

Capture/Compare/PWM (CCP): Two modules for motor control and waveform generation.

Comparator: Two analog comparators with programmable input/output configuration.

Low-Power Performance

A cornerstone of its design is ultra-low power consumption. The controller features multiple oscillator options and a suite of power-saving modes, including Sleep and Peripheral Module Disable. This allows battery-powered applications to achieve extended operational life, waking from sleep via external interrupts, timer overflow, or other internal events.

Application Overview

The PIC16F917-I/P's feature set makes it exceptionally suitable for a diverse range of applications. Its integrated LCD driver is a key enabler for embedded systems requiring user feedback, such as:

Advanced HVAC controllers and thermostat units.

Medical devices like portable monitors and diagnostic equipment.

Automotive dash displays and control panels.

Industrial instrumentation and measurement tools.

Home appliance control boards (e.g., washing machines, smart ovens).

Designers leverage its analog and digital peripherals to create compact, cost-effective solutions that minimize external component count, thereby enhancing system reliability and reducing the overall bill of materials (BOM).

ICGOODFIND Summary

The Microchip PIC16F917-I/P is a highly integrated 8-bit microcontroller that excels in cost-sensitive, display-oriented embedded designs. Its combination of a powerful core, substantial memory, a dedicated LCD driver, and comprehensive communication peripherals, all operating with high power efficiency, provides an exceptional solution for developing sophisticated human-machine interfaces. It represents a perfect balance of performance, integration, and value for engineers.

Keywords:

1. PIC16F917-I/P

2. LCD Driver

3. Nanowatt Technology

4. 8-Bit Microcontroller

5. Enhanced Mid-Range Core