PIC16F877A MICROCONTROLLER

The PIC16F877A is a popular 8-bit CMOS FLASH-based microcontroller from Microchip's PIC family, widely used in various embedded systems and electronic projects. It features a powerful RISC architecture, making it suitable for a wide range of applications.

Key Features of the PIC16F877A

• CPU: 8-bit RISC architecture with only 35 single-word instructions.

• Operating Speed: Up to 20 MHz clock input, resulting in a 200 ns instruction cycle time.

• Memory:

  • Program Memory (Flash):14 KB (8192 words 14 bits).

  • Data RAM:368 Bytes.

  • Data EEPROM:256 Bytes for non-volatile storage.

• I/O:40-pin package (most commonly PDIP) with 33 programmable I/O pins across five ports (PORTA through PORTE).

• Peripherals:

  • Timers: Two 8-bit timers (TMR0, TMR2) and one 16-bit timer (TMR1).

  • ADC: An 8-channel, 10-bit Analog-to-Digital Converter.

  • PWM/CCP: Two Capture/Compare/PWM CCP modules.

  • Communication:

    • Universal Synchronous Asynchronous Receiver Transmitter (USART).

    • Synchronous Serial Port (SSP) configurable as 3-wire SPI or 2-wire I2C bus.

    • Parallel Slave Port (PSP).

  • Other: Watchdog Timer (WDT), Two Analog Comparators, Interrupt Capability (15 sources).

• Operating Voltage: Typically 4.0 V to 5.5 V.

• Oscillator: Requires an external oscillator (crystal/ceramic resonator) or RC circuit; it does not have an internal high-frequency oscillator.