PIC16F873 MCU Microcontroller DIP-28 PIN, 22 I/O, 5xADC

The PIC16F873 is an 8-bit microcontroller from Microchip Technology, based on the PIC® mid-range architecture. It’s part of the PIC16F87X family and is commonly used in low- to mid-range embedded applications.

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Core Features

• Architecture: 8-bit RISC, Harvard architecture

• Instruction Set: 35 single-word instructions

• Operating Frequency: DC – 20 MHz (with external oscillator)

Memory

• Program Memory (Flash): 7 Kwords (14-bit words, 8K bytes)

• Data RAM: 192 bytes

• EEPROM Data Memory: 128 bytes

• Stack: 8-level deep hardware stack (not software accessible)

I/O and Peripherals

• I/O Pins: 22

• I/O Ports: PORTA, PORTB, PORTC

• Timers:

  • Timer0: 8-bit

  • Timer1: 16-bit

  • Timer2: 8-bit

• Capture/Compare/PWM (CCP): 2 modules

• Analog-to-Digital Converter (ADC):

  • 5 input channels

  • 10-bit resolution

• USART: Yes (supports RS-232 via TX/RX)

• SPI/I2C: Supports Master/Slave modes

• Watchdog Timer (WDT): With its own on-chip RC oscillator

• Brown-out Reset (BOR): Yes

• Power-on Reset (POR): Yes

Interrupts

• Multiple interrupt sources:

  • External interrupt (RB0/INT)

  • PORTB change interrupt

  • Timer interrupts

  • Peripheral interrupts (USART, ADC, etc.)

Power Requirements

• Operating Voltage: 2.0V to 5.5V

• Power-Saving Features: Sleep mode, WDT

Special Features

• In-Circuit Serial Programming™ (ICSP)

• In-Circuit Debugging (ICD) support

• Code protection

• Programmable pull-ups on PORTB