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PIC16F72 8-bit PIC Microcontroller

PIC16F72 is a low-cost, low-power, high-speed CMOS Flash technology capable, 8-bit, fully-static Microcontroller unit that has 28 pins out of which 22 pins can be used as I/O pins. It has Power-on-Reset (POR) as well as the Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) circuitry.

 

PIC16F72 Pin Configuration

PIC16F72 Pin Configuration

Pin Number

Pin Name

Description

1

MCLR / VPP

MCLR is used during programming, mostly connected to programmer like PicKit

2

RA0 / AN0

Analog pin 0 or 0th pin of PORTA

3

RA1 / AN1

Analog pin 1 or 1st pin of PORTA

4

RA2 / AN2

Analog pin 2 or 2nd pin of PORTA

5

RA3 / AN3 / VREF

Analog pin 3 or 3rd pin of PORTA

6

RA4 / T0CKI

4th pin of PORTA

7

RA5 / AN5 / SS

Analog pin 4 or 5th pin of PORTA

8

Vss

Ground Pin of MCU

9

OSC1 / CLKI

External Oscillator or clock input pin

10

OSC2 / CLKO

External Oscillator or clock output pin

11

RC0 / T1OSO / T1CKI

0th pin of PORT C or Timer1 oscillator output or Timer1 External Clock Input

12

RC1 / T1CKO

1st pin of PORTC or Timer1 external Clock Output

13

RC2 / CCP1

2nd pin of PORTC or CAPTURE/COMPARE/PWM pin

14

RC3 / SCK / SCL

3rd pin of PORTC or Serial Data Clock pin

15

RC4 / SDI / SDA

4th pin of PORTC or Serial Data In pin

16

RC5 / SDO

5th pin of PORTC or Serial Data Out pin

17

RC6

6th pin of PORTC

18

RC7

7th pin of PORTC

19

Vss

Ground Pin of MCU

20

Vdd

Positive Pin of MCU (+5V)

21

RB0 / INT

0th pin of PORTB or External Interrupt pin

22

RB1

1st pin of PORTB

23

RB2

2nd pin of PORTB

24

RB3

3rd pin of PORTB

25

RB4

4th pin of PORTB

26

RB5

5th pin of PORTB

27

RB6 / PGC

6th pin of PORTB or connected to programmer

28

RB7 / PDG

7th pin of PORTB or connected to programmer

 

Features and Specification of the PIC16F72 Microcontroller

PIC16F72 - Simplified Features and Specification

CPU

Baseline 8-bit

Number of Pins

28

Operating Voltage (V)

2-5.5V

Number of I/O pins

22

ADC Module

8-bit, 5-channel

Timer Module

2 x 8-bit

1 x 16-bit

Capture/Compare/PWM Peripherals

1 x 16-bit Capture module

1 x 16-bit Compare module,

1 x 10-bit PWM module,

DAC Module

Nil

Communication Peripherals

1 x SSP (SPI / I2C)

External Oscillator

Up to 20Mhz

Internal Oscillator

Nil

Program Memory (KB)

3.5KB

CPU Speed (MIPS)

5 MIPS

RAM Bytes

128

Data EEPROM

Nil

 

Note: Complete technical details can be found in the PIC16F72 Datasheet linked at the bottom of this page.

 

Introduction to PIC16F72

PIC16F72 is a low-cost, low-power, high-speed CMOS Flash technology capable, 8-bit, fully-static Microcontroller unit that has 28 pins out of which 22 pins can be used as I/O pins. It has Power-on-Reset (POR) as well as the Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) circuitry.

 

It has a SLEEP mode, which can be configured in Power saving applications. PIC16F72 also comes with the code protection, watchdog timer mode that serve the power and reliability feature. Also, system cost can be greatly reduced by using this microcontroller unit.

 

It has a wide operating voltage ranging from 2V to 5.5V. Thus, it can be used in 3.3V or 5.0V logic level operations. The below image is showing the detailed pin diagram of the PIC16F72.

 

Detailed Features of PIC16F72

PIC16F72 –Detailed Features

CPU

Baseline 8-Bit

Architecture

8

Program Memory Size (Kbytes)

3.5

RAM (bytes)

128

EEPROM/HEF

0

Pin Count

28

Max. CPU Speed (MHz)

20

Peripheral Pin Select (PPS)

No

Internal Oscillator

0

No. Of comparators

0

No. Of  Operational Amplifier

0

No. Of ADC channels

5

Max ADC Resolution (bits)

8

ADC with Computation

0

Number of DAC Converter

0

Max DAC resolution

-

Internal Voltage Reference

No

Zero Cross Detect

No

No. Of 8-bit timers

2

No. Of 16-bit Timers

1

Signal Measurement Timer

0

Hardware Limit Timer

0

No. Of PWM outputs

1

Max PWM resolution

10

Angular Timer

0

Math Accelerator

No

No. Of  UART module

0

No. Of SPI Module

1

No. Of I2C module

1

No. Of USB Module

0

Windowed Watchdog Timer (WWDT)

Yes

CRC/Scan

No

Numerically Controlled Oscillator

No

Cap. Touch Channels

0

Segment LCD

0

Minimum Operating Temperature (°C)

-40

Maximum Operating Temperature (°C)

125

Minimum Operating Voltage (V)

2

Maximum Operating Voltage (V)

5.5

High Voltage Capable

No

 

Programming PIC Microcontroller

PIC microcontrollers can be programmed with different software that is available in the market. There are people who still use Assembly language to program PIC MCUs. The below details is for the most advanced and common software and compiler that has been developed by Microchip itself.

 

In order to program the PIC microcontroller, we will need an IDE (Integrated Development Environment), where the programming takes place. A compiler, where our program gets converted into MCU readable form called HEX files. An IPE (Integrated Programming Environment), which is used to dump our hex file into our PIC MCUs.

IDE: MPLABX v3.35

IPE: MPLAB IPE v3.35

Compiler: XC8

 

Microchip has given all these three software for free. They can be downloaded directly from their official page. I have also provided the link for your convenience. Once downloaded, install them on your computer. If you have any problem doing so, you can post them on the comment below.

 

To dump or upload our code into PIC, we will need a device called PICkit 3. The PICkit 3 programmer/debugger is a simple, low-cost in-circuit debugger that is controlled by a PC running MPLAB IDE (v8.20 or greater) software on a Windows platform. The PICkit 3 programmer/debugger is an integral part of the development engineer's tool suite. A basic programming circuit for PIC16F72 is shown below.

Programming Circuit for PIC16F72

In addition to this, we will also need other hardware like a Perf board or breadboard, Soldering station, PIC ICs, Crystal oscillators, capacitors, etc.

 

Components associated with PIC

PICkit3, PIC Development Board, Crystal Oscillators, Capacitors, 12V Adapter, 7805 Voltage Regulator.

 

Application of PIC16F72

This is a basic Mid-range 8-bit microcontroller unit that can be used in the following applications- 

1.    Input Output operations

2.    Control Applications

3.    Analog data Processing

4.    Sensors integration and data logging

5.    Small scale, low cost embedded application based production

 

2D Model

The dimensions of the PIC16F72 are shown below-

Dimensions of PIC16F72 Microcontroller

Component Datasheet

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