PIC12F675 – 8 bit Microcontroller

29 October 2018 - 0 Comments

PIC12F675 – 8 bit Microcontroller

PIC12F675 Microcontroller Pinout

PIC12F675 is an 8-Bit CMOS Microcontroller made by MICROCHIP TECHNOLOGY and is developed on high-performance RISC architecture. This microcontroller is very popular among hobbyists and engineers due its cost and small size.

Pin configuration

PIC12F675 is an 8 pin device and many of the pins can perform multiple functions as shown in above PIC12F675 pin diagram. The description for each of these functions is given below.

Pin	Function	Description
1	VDD	Positive Power Supply
2	GP5/T1CKI/OSC1/CLKIN	GP5: General purpose I/O pin 5 T1CKI: Timer1 external clock input OSC1:Oscillator pin 1 CLKI: External clock source input
3	GP4/ AN3/ T1G/OSC2/CLKOUT	GP4: General purpose I/O pin 4 AN3: Analog input 3 T1G: Timer1 gate OSC2: Oscillator pin 2 CLKO: Clock source output
4	GP3/MCLR/VPP	GP3: General purpose I/O pin 3 MCLR: Master Clear Input or Reset pin VPP: Programming voltage
5	GP2/AN2 /T0CKI/INT/COUT	GP2: General purpose I/O pin 2 AN2: Analog input2 T0CKI: Timer0 clock input INT: External Interrupt COUT: Comparator output
6	GP1/AN1/CIN-/VREF/ICSPCLK	GP1: General purpose I/O pin 1 AN1: Analog input1 CIN-: Comparator input VREF: External Voltage reference ICSPCLK: Serial Programming Clock
7	GP0/AN0/CIN+/ICSPDAT	GP: General purpose I/O pin AN0: Analog input0 CIN+: Comparator input ICSPDAT: Serial Programming Data I/O
8	VSS	Ground

PIC12F675 Features and Electrical characteristics

CPU	8-bit
Total number of pins	8
Programmable pins	6
Communication Interface	ICSP or In-Circuit Serial Programming Interface (13,14 Pins) [Can be used for programming this controller]
ADC Feature	4 channels of 10-bit resolution
Timer Feature	One 8-bit counter, One 16-bit counter
PWM channels	Not available
Analog Comparator	Available-1
External Oscillator	Up to 20MHz
Internal Oscillator	4MHz Internal R-C Oscillator factory calibrated to ±1%
Program memory / Flash memory	2Kbytes[100000 write/erase cycles]
CPU Speed	1MIPS @ 1MHz
RAM	64bytes
EEPROM	128bytes
Watchdog Timer	Available and is featured with Independent Oscillator for Reliable Operation
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
Maximum current into VDD pin	250mA

PIC12F675 Replacement

PIC12F629

PIC12F675 Overview

PIC12F675 is a microcontroller designed for low end applications and systems. It is good for learning and experimenting for engineers because it has high flash memory rewrite cycle. The controller has 2KBytes flash memory which is enough for starters to develop basic programs. Also the 6 GPIO pins are designed for handling a maximum current of 25mA which meets the threshold of many peripheral devices and sensors.

This controller has very few features and it cannot be used for developing advanced applications. It is best used for developing programs by beginners who want to enter microcontroller platform.

How to use PIC12F675

Any microcontroller is needed to be programmed before installing in any system or application. So first we need to program the controller PIC12F675.

Entire process of programming PIC12F675 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 (use ‘C’ language in MPLAB IDE).
MPLAB IDE for Windows can be downloaded at this website: www.microchip.com/mplabx-ide-windows-installer
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 PIC12F675
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 PIC12F675 flash memory
Disconnect the programmer and connect the appropriate peripherals for the controller