PIC16F886 8 Bit Microcontroller in Pakistan
Microcontroller

PIC16F886 8 Bit Microcontroller in Pakistan

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PIC16F886 Microcontroller Overview

PIC16F886 is a microcontroller good for experimenting and developing applications because it has a high flash memory rewrite cycle. Also, there are a lot of tutorials and support available online. The controller has 16KBytes flash memory which is enough for many applications. Along with 24 programmable Input/output pins that are developed to handle 20mA current (direct LED driving capability) the system can interface many peripherals easily. With Watchdog timer to reset under error automatically, the controller can be used to develop applications of permanent installation.

PIC16F886 Pin Configuration

PIC16F886 is a 28 pin IC and each pin can perform multiple functions as shown in the above PIC16F886 pin diagram. The description for each of these pins is given below.

Pin Number

Pin Name

Description

1

RE3/MCLR/VPP

RE3: Pin3 of  Port E

MCLR: Master Clear Input or Reset pin

VPP: Programming voltage

2

RA0/AN0/ULPWU/C12IN0-

RA0: Pin0 of Port A

AN0: Analog input 0

ULPWU: Ultra Low-Power Wake-up input

C12IN0-: Comparator C1 or C2 negative input

3

RA1/AN1/C12IN1-

RA1: Pin1 of Port A

AN1: Analog input 1

C12IN1-: Comparator C1 or C2 negative input

4

RA2/AN2/VREF-/CVREF/C2IN+

RA2: Pin2 of Port A

AN2: Analog input 2

VREF-: A/D reference voltage (low) input

CVREF: Comparator voltage reference output

C2IN+: Comparator C2 positive input

5

RA3/AN3/VREF+/C1IN+

RA3: Pin3 of Port A

AN3: Analog input 3

VREF+: A/D reference voltage (high) input

C1IN+: Comparator C1 positive input

6

RA4/T0CKI/C1OUT

RA4: Pin4 of Port A

T0CKI: Timer0 external clock input

C1OUT: Comparator C1 output

7

RA5/AN4/SS/ C2OUT

RA5: Pin5 of Port A

AN4: Analog input 4

SS: SPI slave select input

C2OUT: Comparator C2 output

8

VSS

Ground

9

RA7/OSC1/CLKIN

RA7: Pin7 of Port A

OSC1:Oscillator pin 1

CLKI: External clock source input

10

RA6/OSC2/CLKOUT

RA6: Pin6 of Port A

OSC2: Oscillator pin 2

CLKO: Clock source output

11

RC0/T1OSO/T1CKI

RC0: Pin0 of Port C

T1OSO :Timer1 oscillator output

T1CKI: Timer1 external clock input

12

RC1/T1OSI/CCP2

RC1: Pin1 of Port C

T1OSI: Timer1 oscillator input

CCP2:Capture 2 input/Compare 2 output/PWM2 output

13

RC2/P1A/CCP1

RC2: Pin2 of Port C

P1A: PWM output

CCP1: Capture 1 input/Compare 1 output/PWM1 output.

14

RC3/SCK/SCL

RC3: Pin3 of Port C

SCK: SPI clock

SCL: I2C clock

15

RC4/SDI/SDA

RC4: Pin4 of Port C

SDI: SPI data input

SDA: I2C data I/O

16

RC5/SDO

RC5: Pin5 of Port C

SDO: SPI data out

17

RC6/TX/CK

RC6: Pin6 of Port C

TX: EUSART asynchronous transmit

CK: EUSART synchronous clock

18

RC7/RX/DT

RC7: Pin7 of Port C

RX: EUSART asynchronous receive

DT: EUSART synchronous data

19

VSS

Ground

20

VDD

Positive Power Supply

21

RB0/AN12/INT

RB0: Pin0 of Port B

AN12: Analog input 12

INT: External interrupt

22

RB1/AN10/P1C/C12IN3-

RB1: Pin1 of Port B

AN10: Analog input 10

P1W: PWM output

C12IN3-: Comparator C1 or C2 negative input

23

RB2/AN8/P1B

RB2: Pin2 of Port B

AN8: Analog input 8

P1B: PWM output

24

RB3/AN9/PGM/C12IN2-

RB3: Pin3 of Port B

AN9: Analog input 9

PGM: Low-voltage ICSP Programming enable pin

C12IN2-: Comparator C1 or C2 negative input

25

RB4/AN11/P1D

RB4: Pin4 of Port B

AN11: Analog input 11

P1D: PWM output

26

RB5/AN13/T1G

RB5 Pin5 of Port B

AN13: Analog input 13

T1G: Timer1 Gate input

27

RB6/ICSPCLK

RB6: Pin6 of Port B

ICSPCLK: Serial Programming Clock

28

RB7/ICSPDAT

RB7: Pin7 of Port B

ICSPDAT: ICSP Data I/O

PIC16F886 Features

CPU

8-bit

Total pins

28

Programmable pins

24

Communication Interface

SPI Serial Interface(7,14,15,16 PINS) [Can be used for programming this controller]

UART Interface(17,18 PINS) [Can be used for programming this controller]

Two-wire Serial Interface or I2C(14,15 PINS) [Can be used to connect sensors and LCDs]

ICSP or In-Circuit Serial Programming Interface (27,28 Pins) [Can be used for programming this controller]

ADC Feature

11channels of 10-bit resolution

Timer Feature

One 8-bit counter, Two 16-bit counter

Analog Comparators

2

PWM channels

4

External Oscillator

Up to 20MHz

Internal Oscillator

31KHz-8MHz  Internal R-C Oscillator featured with:

  • Factory calibrated to ±1%
  • Software selectable frequency range of 8 MHz to 31 kHz
  • Software tunable
  • Crystal fail detect for critical applications
  • Clock mode switching during operation for power savings

Program memory / Flash memory

16Kbytes[100000 write/erase cycles]

CPU Speed

 1MIPS @ 1MHz

RAM

368Bytes

EEPROM

256Bytes

Watchdog Timer

Programmable Watchdog Timer with separate on-chip oscillator

Power Save Modes

Available

Operating Voltage

2.0V to 5.5V

Maximum current to any I/O pin

IN :25mA

OUT : 25mA

Operating Temperature

-40°C to +125°C

How to Use PIC16F886 Microcontroller

Like any other microcontroller, PIC16F886 needed to be programmed before getting the chip working. So for working of PIC16F886, first we need to save the appropriate program file in the controller FLASH memory. Once power is provided, the controller executes this code saved in FLASH memory to create the response.

The entire process of programming PIC16F886 goes like this:

  • First list all the functions to be executed by this controller.
  •  Next, write these functions in ‘IDE software’ using relative programming language

(For these MPLAB IDE you can use ‘C’ language to write the application program)

  • After writing the desired program compile it for error elimination
  • For a successful compilation IDE application generates HEX file for the written program
  • Choose the programming device (usually ‘PIC kit 3’ or ‘PIC kit 2’) which establishes communication between PC and PIC16F886
  • Connect the programming device to microcontroller appropriately
  • Run the HEX file dumping software which is related to the chosen programming device
  • Choose the appropriate program HEX file and burn this HEX file in PIC16F886 flash memory
  • Disconnect the programmer and connect the appropriate peripherals for the controller

After connecting the power, the controller executes this HEX code saved in the memory (which is written a program) and creates a response as instructed.


Applications

  • Hobbyist projects
  • Display units
  • Development board for learners
  • Analog signal measuring and manipulations
  • Embedded systems like coffee machine, vending machine
  • Motor control systems

Component Datasheet

PIC16F886 Microcontroller Datasheet

Package Includes:

1 x PIC16F886 8 Bit Microcontroller

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