PIC16F877A Microcontroller

• It has a total number of 40 pins and there are 33 pins for input and output.
• One of the main advantages is that it can be write-erase as many times as possible because it uses FLASH memory technology.
• It is used in remote sensors, security and safety devices, home automation and many industrial instruments. It has a smaller 35 instructions set.
• It can operate up to 20MHz frequency.
• It has three Timers in it, two of which are 8-bit Timers while 1 is of 16 Bit.
• It supports many communication protocols like Serial Protocol, Parallel Protocol and I2C Protocol.
• The maximum current each PORT can sink or source is around 100mA. Therefore, the current limit for each GPIO pin of PIC16F877A is 10 mili ampere.
• This powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip’s powerful PIC® architecture into an 40 package and is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X devices. The PIC16F877A features 256 bytes of EEPROM data memory, self programming, an ICD, 2 Comparators, 8 channels of 10-bit Analog-to-Digital (A/D) converter, 2 capture/compare/PWM functions, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated Circuit (I²C™) bus and a Universal Asynchronous Receiver Transmitter (USART).
• Components associated with PICPICkit3, Pic development board, Crystal oscillators, capacitors, 12V Adapter, 7805 Voltage Regulator.

Pinout Configuration

• Pin 1(MCLR/Vpp)MCLR is used during programming, mostly connected to programmer like PicKit
• Pin 2(RA0/AN0)Analog pin 0 or 0^th pin of PORTA
• Pin 3(RA0/AN0) Analog pin 1 or 1^st pin of PORTA
• Pin 4(RA2/AN2/Vref-)Analog pin 2 or 2^nd pin of PORTA
• Pin 5(RA3/AN3/Vref+)Analog pin 3 or 3^rd pin of PORTA
• Pin 6(RA4/T0CKI/C1out)4^th pin of PORTA
• Pin 7(RA5/AN4/SS/C2out)Analog pin 4 or 5^th pin of PORTA
• Pin 8(RE0/RD/AN5) Analog pin 5 or 0^th pin of PORTE
• Pin 9(RE1/WR/AN6)Analog pin 6 or 1^st pin of PORTE
• Pin 10(RE2/CS/AN7)7^th pin of PORTE
• Pin 11(Vdd)Ground pin of MCU
• Pin 12(Vss) Positive pin of MCU (+5V)
• Pin 13(OSC1/CLKI) External Oscillator/clock input pin
• Pin 14(OSC2/CLKO)External Oscillator/clock output pin
• Pin 15(RC0/T1OSO/T1CKI) 0^th pin of PORT C
• Pin 16(RC1/T1OSI/CCP2) 1^st pin of POCTC or Timer/PWM pin
• Pin 17(RC2/CCP1)2^nd pin of POCTC or Timer/PWM pin
• Pin 18(RC3/SCK/SCL)3^rd pin of POCTC
• Pin 19(RD0/PSP0)0^th pin of POCTD
• Pin 20(RD1/PSP1) 1^st pin of POCTD
• Pin 21(RD2/PSP2) 2^nd pin of POCTD
• Pin 22(RD3/PSP3) 3^rd pin of POCTD
• Pin 23(RC4/SDI/SDA) 4^th pin of POCTC or Serial Data in pin
• Pin 24(RC5/SDO) 5^th pin of POCTC or Serial Data Out pin
• Pin 25(RC6/Tx/CK) 6^th pin of POCTC or Transmitter pin of Microcontroller
• Pin 26(RC7/Rx/DT)7^th pin of POCTC or Receiver pin of Microcontroller
• Pin 27(RD4/PSP4)4^th pin of POCTD
• Pin 28(RD5/PSP5)5^th pin of POCTD
• Pin 29(RD6/PSP6)6^th pin of POCTD
• Pin 30(RD7/PSP7) 7^th pin of POCTD
• Pin 31(Vss) Positive pin of MCU (+5V)
• Pin 32(Vdd)Ground pin of MCU
• Pin 33(RB0/INT) 0^th pin of POCTB or External Interrupt pin
• Pin 34(RB1) 1^st pin of POCTB
• Pin 35(RB2) 2^nd pin of POCTB
• Pin 36(RB3/PGM) 3^rd pin of POCTB or connected to programmer
• Pin 37(RB4) 4^th pin of POCTB
• Pin 38(RB5) 5^th pin of POCTB
• Pin 39(RB6/PGC)6^th pin of POCTB or connected to programmer
• Pin 40(RB7/PGD) 7^th pin of POCTB or connected to programmer

Applications

• Multiple DIY Projects
• Very good choice if you are learning PIC
• Projects requiring Multiple I/O interfaces and communications
• Replacement for Arduino Module
• Ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications.