PIC16F874-20/P

Product Overview

Category

The PIC16F874-20/P 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-based program memory
• Wide operating voltage range
• Low power consumption
• Enhanced peripheral integration
• Flexible I/O options

Package

The PIC16F874-20/P is available in a 40-pin PDIP (Plastic Dual Inline Package) format.

Essence

The essence of the PIC16F874-20/P lies in its ability to provide efficient and reliable control and processing capabilities for electronic systems.

Packaging/Quantity

The PIC16F874-20/P is typically packaged in reels or tubes, with a quantity of 100 units per package.

Specifications

• Operating Voltage: 2.0V to 5.5V
• Maximum CPU Speed: 20 MHz
• Program Memory Size: 8 KB
• RAM Size: 368 bytes
• Number of I/O Pins: 33
• Analog-to-Digital Converter (ADC): 10-bit, 8 channels
• Timers: Three 8-bit timers, one 16-bit timer
• Communication Interfaces: USART, SPI, I2C

Detailed Pin Configuration

The PIC16F874-20/P has a total of 40 pins, each serving a specific purpose. The pin configuration is as follows:

1. VDD - Power supply voltage
2. RA0/AN0 - Analog input / Digital I/O
3. RA1/AN1 - Analog input / Digital I/O
4. RA2/AN2 - Analog input / Digital I/O
5. RA3/AN3/VREF-/CVREF - Analog input / Digital I/O
6. RA4/T0CKI/C1OUT - Timer0 clock input / Digital I/O
7. RA5/AN4/SS/HLVDIN - Analog input / Digital I/O
8. RE0/RD/AN5 - Reset input / Digital I/O
9. RE1/WR/AN6 - Write control input / Digital I/O
10. RE2/CS/AN7 - Chip select input / Digital I/O
11. VSS - Ground
12. OSC1/CLKI - Oscillator input
13. OSC2/CLKO - Oscillator output
14. RC0/T1OSO/T1CKI - Timer1 oscillator output / Timer1 clock input
15. RC1/T1OSI/CCP2 - Timer1 oscillator input / CCP2 module
16. RC2/CCP1 - CCP1 module
17. RC3/SCK/SCL - Serial clock input
18. RC4/SDI/SDA - Serial data input
19. RC5/SDO - Serial data output
20. RC6/TX/CK - USART transmit / Clock input

... (continued for remaining pins)

Functional Features

The PIC16F874-20/P offers a range of functional features that enhance its usability and performance. Some notable features include:

• Flash memory for easy program updates
• Enhanced capture/compare/PWM (CCP) modules for precise timing control
• Analog-to-Digital Converter (ADC) for analog signal processing
• Universal Synchronous Asynchronous Receiver Transmitter (USART) for serial communication
• Serial Peripheral Interface (SPI) for interfacing with external devices
• Inter-Integrated Circuit (I2C) for communication with other ICs
• Timers for accurate timekeeping and event triggering

Advantages and Disadvantages

Advantages

• High-performance RISC architecture for efficient processing
• Wide operating voltage range allows flexibility in power supply options
• Low power consumption for energy-efficient applications
• Enhanced peripheral integration reduces external component count
• Flash-based program memory enables easy updates and reprogramming

Disadvantages

• Limited program memory size may restrict complex application development
• Relatively small RAM size may limit data storage capabilities
• Lack of built-in Ethernet or USB interfaces may require additional components for connectivity

Working Principles

The PIC16F874-20/P operates based on the principles of a typical microcontroller. It executes instructions stored in its program memory, interacts with peripherals, and processes data according to the program logic. The microcontroller's central processing unit (CPU) fetches instructions from memory, performs necessary calculations and operations, and controls the input/output (I/O) pins to communicate with external devices.

Detailed Application Field Plans

The PIC16F874-20/P finds extensive use in various application fields, including but not limited to:

1. Industrial automation: Control systems, motor control, and monitoring devices.