The PIC16F877A is a 28/40/44-pin Enhanced Flash Microcontroller, ideal for a wide range of embedded applications. Key features include:
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Timer0: 8-bit timer/counter with an 8-bit prescaler
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Timer1: 16-bit timer/counter with prescaler; can operate during Sleep using an external crystal or clock
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Timer2: 8-bit timer/counter with an 8-bit period register, prescaler, and postscaler
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Two Capture/Compare/PWM (CCP) Modules:
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16-bit Capture with 12.5 ns resolution
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16-bit Compare with 200 ns resolution
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PWM with up to 10-bit resolution
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Synchronous Serial Port (SSP) supporting SPI (Master mode) and I²C™ (Master/Slave mode)
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USART/SCI: Full-duplex serial communication with 9-bit address detection
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Parallel Slave Port (PSP): 8-bit wide with external RD, WR, and CS controls (available on 40/44-pin versions only)
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Brown-out Reset (BOR): Integrated brown-out detection for reliable power monitoring