PIC16F877AT-I/L

Microcontrollers Overview

The PIC16F877AT-I/L is an 8-bit Flash microcontroller from the PIC16F87XA family, manufactured by Microchip Technology. It features a high-performance RISC CPU with up to 20 MHz operating speed and 35 single-word instructions. The device includes 8K x 14 words of Flash program memory, 368 bytes of data RAM, and 256 bytes of EEPROM. It offers 33 programmable I/O lines across five ports (A through E) and supports a wide operating voltage range of 2.0V to 5.5V. Key peripherals include three timers, two Capture/Compare/PWM modules, an MSSP module for SPI and I²C communication, a USART, and an 8-channel 10-bit Analog-to-Digital Converter.

Microcontrollers Feature Summary

• Features a high-performance 8-bit RISC CPU architecture with single-cycle instruction execution for efficient processing.
• Includes versatile peripheral modules such as Capture/Compare/PWM, Master Synchronous Serial Port (MSSP), and Universal Synchronous Asynchronous Receiver Transmitter (USART).
• Provides analog capabilities with an 8-channel 10-bit Analog-to-Digital Converter and dual analog comparators with programmable voltage reference.
• Supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugging (ICD) via dedicated pins for streamlined development.

Microcontrollers Applications

• Industrial control systems requiring robust I/O handling and serial communication.
• Motor control applications utilizing PWM and capture/compare functionalities.
• Data acquisition systems leveraging the on-chip ADC and comparator modules.
• Embedded devices needing reliable non-volatile memory for configuration storage.

Microcontrollers Procurement Notes

Verify the specific package type, as the 'I/L' suffix denotes a 44-pin PLCC package. Confirm that the industrial temperature rating (-40°C to +85°C) aligns with your operational requirements. Ensure compatibility with your programming interface, as this device supports both low-voltage and standard ICSP protocols. Cross-reference the datasheet revision to confirm silicon stepping matches your design specifications.

Microcontrollers Selection Notes

Select this component when designing systems that require extensive I/O connectivity and multiple communication interfaces within an 8-bit architecture. It is suitable for applications demanding moderate program memory capacity and analog signal processing. Consider the 44-pin PLCC package constraints regarding PCB layout and thermal management. Evaluate if the 20 MHz maximum clock speed meets your real-time processing needs compared to higher-speed alternatives.

Microcontrollers Part Context

This part belongs to the PIC16F87XA series, which shares a common core architecture with variants like the PIC16F873A, PIC16F874A, and PIC16F876A. The primary distinctions lie in memory sizes and pin counts. While the PIC16F876A has identical memory but fewer I/O ports, the PIC16F877A provides full access to all five I/O ports and the Parallel Slave Port, making it ideal for complex bus interfacing tasks.

Microcontrollers Replacement Considerations

Direct substitutes within the same family include the PIC16F877A-04/I/L or PIC16F877A-20/I/L, differing primarily in maximum clock frequency ratings. Verify that any replacement maintains the 44-pin PLCC footprint and industrial temperature range. Ensure that pinout compatibility is preserved, particularly for the Parallel Slave Port and analog inputs, to avoid redesigning the host circuitry.