PIC16F877A
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 a 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).
PIC16F877A Microcontroller Pinout 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/Vref- | Analog pin 2 or 2nd pin of PORTA |
| 5 | RA3/AN3/Vref+ | Analog pin 3 or 3rd pin of PORTA |
| 6 | RA4/T0CKI/C1out | 4th pin of PORTA |
| 7 | RA5/AN4/SS/C2out | Analog pin 4 or 5th pin of PORTA |
| 8 | RE0/RD/AN5 | Analog pin 5 or 0th pin of PORTE |
| 9 | RE1/WR/AN6 | Analog pin 6 or 1st pin of PORTE |
| 10 | RE2/CS/AN7 | 7th pin of PORTE |
| 11 | Vdd | Ground pin of MCU |
| 12 | Vss | Positive pin of MCU (+5V) |
| 13 | OSC1/CLKI | External Oscillator/clock input pin |
| 14 | OSC2/CLKO | External Oscillator/clock output pin |
| 15 | RC0/T1OSO/T1CKI | 0th pin of PORT C |
| 16 | RC1/T1OSI/CCP2 | 1st pin of POCTC or Timer/PWM pin |
| 17 | RC2/CCP1 | 2nd pin of POCTC or Timer/PWM pin |
| 18 | RC3/SCK/SCL | 3rd pin of POCTC |
| 19 | RD0/PSP0 | 0th pin of POCTD |
| 20 | RD1/PSPI | 1st pin of POCTD |
| 21 | RD2/PSP2 | 2nd pin of POCTD |
| 22 | RD3/PSP3 | 3rd pin of POCTD |
| 23 | RC4/SDI/SDA | 4th pin of POCTC or Serial Data in pin |
| 24 | RC5/SDO | 5th pin of POCTC or Serial Data Out pin |
| 25 | RC6/Tx/CK | 6th pin of POCTC or Transmitter pin of Microcontroller |
| 26 | RC7/Rx/DT | 7th pin of POCTC or Receiver pin of Microcontroller |
| 27 | RD4/PSP4 | 4th pin of POCTD |
| 28 | RD5/PSP5 | 5th pin of POCTD |
| 29 | RD6/PSP6 | 6th pin of POCTD |
| 30 | RD7/PSP7 | 7th pin of POCTD |
| 31 | Vss | Positive pin of MCU (+5V) |
| 32 | Vdd | Ground pin of MCU |
| 33 | RB0/INT | 0th pin of POCTB or External Interrupt pin |
| 34 | RB1 | 1st pin of POCTB |
| 35 | RB2 | 2nd pin of POCTB |
| 36 | RB3/PGM | 3rd pin of POCTB or connected to programmer |
| 37 | RB4 | 4th pin of POCTB |
| 38 | RB5 | 5th pin of POCTB |
| 39 | RB6/PGC | 6th pin of POCTB or connected to programmer |
| 40 | RB7/PGD | 7th pin of POCTB or connected to programmer |
PIC16F877A Features
| PIC16F877A –Simplified Features |
| CPU | 8-bit PIC |
| Number of Pins | 40 |
| Operating Voltage (V) | 4 to 5.5 V |
| Number of I/O pins | 33 |
| ADC Module | 8ch, 10-bit |
| Timer Module | 8-bit(2), 16-bit(1) |
| Comparators | 2 |
| DAC Module | Nil |
| Communication Peripherals | UART(1), SPI(1), I2C(1), MSSP(SPI/I2C) |
| External Oscillator | Up to 20Mhz |
| Internal Oscillator | Nil |
| Program Memory Type | Flash |
| Program Memory (KB) | 14KB |
| CPU Speed (MIPS) | 5 MIPS |
| RAM Bytes | 368 |
| Data EEPROM | 256 bytes |
Note: Complete technical details can be found in the PIC16F877A Datasheet linked at the bottom of this page.
Detailed Features of PIC16F877A
| PIC16F877A –Detailed Features |
| CPU | 8-bit PIC |
| Architecture | 8 |
| Program Memory Size (Kbytes) | 14 |
| RAM (bytes) | 368 |
| EEPROM/HEF | 256/HEF |
| Pin Count | 40 |
| Max. CPU Speed (MHz) | 20 |
| Peripheral Pin select (PPS) | No |
| Internal Oscillator | No |
| No. Of comparators | 2 |
| No. Of Operational Amplifier | 0 |
| No. Of ADC channels | 14 |
| Max ADC Resolution (bits) | 10 |
| ADC with Computation | No |
| Number of DAC Converter | 0 |
| Max DAC resolution | 0 |
| Internal Voltage Reference | Yes |
| 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 | 0 |
| Max PWM resolution | 10 |
| Angular Timer | No |
| Math Accelerator | No |
| No. Of UART module | 1 |
| No. Of SPI Module | 1 |
| No. Of I2C module | 1 |
| No. Of USB Module | 0 |
| Windowed Watchdog Timer (WWDT) | No |
| CRC/Scan | No |
| Numerically Controlled Oscillator | 0 |
| Cap. Touch Channels | 11 |
| Segment LCD | 0 |
| Minimum Operating Temperature (*C) | -40 |
| Maximum Operating Temperature (*C) | 125 |
| Minimum Operating Voltage (V) | 4 |
| Maximum Operating Voltage (V) | 5.5 |
| High Voltage Capable | No |
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.
Component Datasheet
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