PIC16F874A-I/L

Product Overview

Category

The PIC16F874A-I/L belongs to the category of microcontrollers.

Use

This microcontroller is widely used in various electronic applications that require embedded control and processing capabilities.

Characteristics

• High-performance 8-bit RISC architecture
• Flash program memory
• EEPROM data memory
• Wide operating voltage range
• Low power consumption
• Multiple communication interfaces
• Enhanced peripheral integration

Package

The PIC16F874A-I/L is available in a 44-pin plastic dual inline package (PDIP).

Essence

The essence of the PIC16F874A-I/L lies in its ability to provide efficient and reliable control and processing capabilities for a wide range of electronic devices and systems.

Packaging/Quantity

The PIC16F874A-I/L is typically packaged in reels, with each reel containing a specific quantity of microcontrollers. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Architecture: 8-bit RISC
• Program Memory Size: 8KB
• RAM Size: 368 bytes
• Data EEPROM Size: 256 bytes
• Operating Voltage Range: 2.0V to 5.5V
• Maximum Speed: 20 MHz
• Number of I/O Pins: 33
• Communication Interfaces: USART, SPI, I2C
• Timers: 3
• Analog-to-Digital Converter (ADC): 8 channels, 10-bit resolution

Detailed Pin Configuration

The PIC16F874A-I/L has a total of 44 pins, each serving a specific purpose. The pin configuration is as follows:

1. VDD - Power supply voltage
2. RA0/AN0 - Analog input or digital I/O
3. RA1/AN1 - Analog input or digital I/O
4. RA2/AN2 - Analog input or digital I/O
5. RA3/AN3/VREF-/CVREF - Analog input or digital I/O
6. RA4/T0CKI/C1OUT - Timer0 clock input or digital I/O
7. RA5/AN4/SS/HLVDIN - Analog input or digital I/O
8. RE0/RD/AN5 - Port E bit 0 or RD or analog input
9. RE1/WR/AN6 - Port E bit 1 or WR or analog input
10. RE2/CS/AN7 - Port E bit 2 or CS or analog input
11. VSS - Ground
12. OSC1/CLKI - Oscillator crystal input
13. OSC2/CLKO - Oscillator crystal output
14. RC0/T1OSO/T1CKI - Timer1 oscillator output or clock input
15. RC1/T1OSI/CCP2 - Timer1 oscillator input or CCP2
16. RC2/CCP1 - CCP1
17. RC3/SCK/SCL - Serial clock for SPI or I2C
18. RC4/SDI/SDA - Serial data input for SPI or I2C
19. RC5/SDO - Serial data output for SPI
20. RC6/TX/CK - USART transmit or synchronous clock
21. RC7/RX/DT - USART receive or asynchronous data

... (continued)

Functional Features

The PIC16F874A-I/L offers a range of functional features that enhance its usability and performance in various applications. Some key features include:

• Flash program memory for easy reprogramming
• EEPROM data memory for non-volatile storage
• Enhanced peripheral integration, reducing the need for external components
• Multiple communication interfaces (USART, SPI, I2C) for seamless connectivity
• Timers and PWM modules for precise timing control
• Analog-to-Digital Converter (ADC) for analog signal processing
• Low power consumption modes for energy-efficient operation

Advantages and Disadvantages

Advantages

• High-performance RISC architecture ensures efficient execution of instructions
• Wide operating voltage range allows compatibility with different power sources
• Flash program memory enables easy firmware updates
• Enhanced peripheral integration reduces external component count and PCB complexity
• Multiple communication interfaces provide flexibility in system integration

Disadvantages

• Limited program memory size compared to some other microcontrollers
• Relatively low RAM size may restrict the complexity of applications
• Lack of advanced features found in higher-end microcontrollers

Working Principles

The PIC16F874A-I/L operates based on the principles of a typical 8-bit RISC microcontroller. It executes instructions stored in its program memory, interacts with peripherals and I/O pins, and processes data according to the program logic. The microcontroller's clock drives the execution of instructions and synchronization of various operations.

Detailed Application Field Plans