PIC16F676 Microcontroller: Features, Pinout, and Datasheet

PIC16F676 is a MICROCHIP TECHNOLOGY microcontroller from the 'PIC16F' series which has developed this 8-bit CMOS PIC microcontroller based on Flash. It has a 14-pin interface and a high-performance RISC CPU, making it an excellent choice for a wide range of electronic applications, including embedded systems and industrial automation. This little chip has everything you'll need to create customized student projects. 

Although memory space and pin count are limited when compared to other PIC controllers, flash-based technology allows this device to communicate with external devices. It's popular with amateurs and engineers because of its features, low cost, and tiny size.

Pinout

Symbol

Footprint

3D Model

(1) High-Performance RISC CPU

• Only 35 Instructions to Learn

- All single-cycle instructions except branches

• Operating Speed:

- DC – 20 MHz oscillator/clock input

- DC – 200 ns instruction cycle

• Interrupt Capability

• 8-level Deep Hardware Stack

• Direct, Indirect, and Relative Addressing modes

(2) Special Microcontroller Features

• Internal and External Oscillator Options

- Precision Internal 4 MHz oscillator factory calibrated to ±1%

- External Oscillator support for crystals and resonators

- 5 μs wake-up from Sleep, 3.0V, typical

• Power-Saving Sleep mode

• Wide Operating Voltage Range – 2.0V to 5.5V

• Industrial and Extended Temperature Range

• Low-Power Power-on Reset (POR)

• Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)

• Brown-out Detect (BOD)

• Watchdog Timer (WDT) with Independent Oscillator for Reliable Operation

• Multiplexed MCLR/Input-pin

• Interrupt-on-Pin Change

• Individual Programmable Weak Pull-ups

• Programmable Code Protection

• High Endurance Flash/EEPROM cell

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/data EEPROM retention: > 40 years

(3) Low-Power Features

• Standby Current

- 1 nA @ 2.0V, typical

• Operating Current

- 8.5 μA @ 32 kHz, 2.0V, typical

- 100 μA @ 1 MHz, 2.0V, typical

• Watchdog Timer Current

- 300 nA @ 2.0V, typical

• Timer1 Oscillator Current

- 4 μA @ 32 kHz, 2.0V, typical

(4) Peripheral Features

• 12 I/O Pins with Individual Direction Control

• High Current Sink/Source for Direct LED Drive

• Analog Comparator module with:

- One analog comparator

- Programmable on-chip comparator voltage reference (CVREF) module

- Programmable input multiplexing from device inputs

- Comparator output is externally accessible

• Analog-to-Digital Converter module (PIC16F676)

- 10-bit resolution

- Programmable 8-channel input

- Voltage reference input

• Timer0: 8-bit Timer/Counter with 8-bit Programmable Prescaler

• Enhanced Timer1

- 16-bit timer/counter with Prescaler

- External Gate Input mode

- Option to use OSC1 and OSC2 in LP mode as Timer1 oscillator, if INTOSC mode selected

• In-Circuit Serial ProgrammingTM (ICSPTM) via two pins

Digital Voltmeter with 3-Digit Output by PIC16F676

The device is built with a PIC16F676 for reading analog signals like voltage and a 7-segment LED to display the 3-digit output.

Since most PIC microcontrollers have either an 8-bit or 10-bit analog to digital converter module, the PIC16F676 has 10-bits 8 channels in terms of hardware. Only one channel is utilized to measure input voltages in this project, with the remaining pins being used for digital I/O. The voltage input is handled by a voltage divider made up of R1 and R2. VR1, which is connected in parallel with R2, adjusts the proper display of full-scale voltage. The divided input voltage from AN3 will provide the analog input.

The digital output RA0-RA2 turns on/off the digits in the scan display process. The RC0-RC5 and RA5 drive the 7-segment display, which will be decoded by software utilizing the CCS C compiler to program. The input voltage on RA3 is transformed to a 7-segment code. The timer is programmed to interrupt every 5 ms while scanning all digits at 66 Hz frequency. This means that only one digit is turned on every 5 milliseconds.

Functional Block Diagram

• Prototyping Custom Circuits

• GPS and Security Systems

• Central Heating Projects

• Student Projects for Sensor Interfacing and Motor Controlling

• Used in Home and Industrial Automation

• Embedded System

Package

Microchip Technology Incorporated is a leading manufacturer of smart, networked, and secure embedded control solutions. Customers may create optimal designs using the company's simple development tools and broad product choices, which reduce risk while lowering overall system costs and time to market. The company's technologies are used by over 120,000 clients in the industrial, automotive, consumer, aerospace and defense, communications, and computing sectors. Microchip, based in Chandler, Arizona, offers outstanding technical support as well as dependable delivery and quality.