PIC16F877A-I/P 8-Bit Flash Microcontroller with ADC and USART DIP-40 (PIC16F877A-I/P DIP IC)
The PIC16F877A-I/P is arguably the most famous and widely used 8-bit Flash-based microcontroller in Microchip's mid-range family. Housed in a standard 40-pin DIP package, it is considered the "gold standard" for learning and industrial prototyping. It features a high-performance RISC architecture with 35 single-word instructions and offers 14KB of Flash program memory, 368 bytes of RAM, and 256 bytes of high-endurance EEPROM. This IC is packed with a comprehensive peripheral set, including an 8-channel 10-bit Analog-to-Digital Converter (ADC), two Capture/Compare/PWM (CCP) modules, and a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C. Its large I/O count and robust communication features make it an ideal backbone for complex embedded systems.
This IC is the primary choice for engineering students and professionals in India for a vast range of applications, from basic LED chasing to advanced robotics and industrial automation. It is the go-to component for building DIY home automation hubs, solar charge controllers, digital energy meters, and multi-sensor weather stations that require a high number of I/O pins and multiple communication protocols.
Key Features
- High-performance RISC CPU with 35 single-word instructions
- 8-channel 10-bit Analog-to-Digital Converter (ADC)
- 256 Bytes of high-endurance Data EEPROM (1,000,000 cycles)
- Two Capture/Compare/PWM (CCP) modules for high-resolution PWM
- Master Synchronous Serial Port (MSSP) supporting 3-wire SPI and I2C
- Universal Synchronous Asynchronous Receiver Transmitter (USART/UART)
- Parallel Slave Port (PSP) for fast 8-bit microprocessor interfacing
- Three hardware timers (2 x 8-bit, 1 x 16-bit)
- In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD)
- High current source/sink capability (25mA per I/O)
Specifications
- IC Type = 8-Bit Flash Microcontroller
- Program Memory = 14KB (8192 Words)
- Data RAM = 368 Bytes
- Data EEPROM = 256 Bytes
- ADC Resolution = 10-Bit (8 Channels)
- Maximum Speed = 20MHz
- I/O Pins = 33 (Ports A, B, C, D, and E)
- Supply Voltage = 4.0V to 5.5V
- Current Sink/Source = 25mA
- Package Type = PDIP-40
- Number of Pins = 40
- Mounting Type = Through-Hole
- Operating Temperature = -40 to 85 degrees Celsius
Interfaces
- PIN 1 (MCLR/VPP) = Master Clear / Programming Voltage
- PIN 2 to 7 (RA0 to RA5) = Port A / Analog Inputs / Vref
- PIN 8 to 10 (RE0 to RE2) = Port E / Analog Inputs / Parallel Control
- PIN 11, 32 (VDD) = Positive Supply Voltage (5V)
- PIN 12, 31 (VSS) = Ground (0V)
- PIN 13, 14 (OSC1, OSC2) = External Crystal/Oscillator Inputs
- PIN 15 to 18, 23 to 26 (RC0 to RC7) = Port C / Timers / CCP / USART / SPI / I2C
- PIN 19 to 22, 27 to 30 (RD0 to RD7) = 8-Bit Port D / Parallel Slave Port
- PIN 33 to 40 (RB0 to RB7) = 8-Bit Port B / External Interrupt / ICSP
