PIC16F84A-20I/P

Product Overview

Category

The PIC16F84A-20I/P belongs to the category of microcontrollers.

Use

It is commonly used in various electronic applications that require control and processing capabilities.

Characteristics

• Low power consumption
• High-performance RISC CPU
• Flash program memory
• EEPROM data memory
• I/O ports with programmable pull-up resistors
• Timer/counter modules
• Serial communication interface
• Watchdog timer
• Power-saving sleep mode

Package

The PIC16F84A-20I/P is available in a 18-pin DIP (Dual Inline Package) format.

Essence

This microcontroller is designed to provide efficient control and processing capabilities for electronic devices.

Packaging/Quantity

The PIC16F84A-20I/P is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Operating Voltage: 2.0V to 5.5V
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 1K words (14-bit)
• Data Memory Size: 68 bytes
• I/O Pins: 13
• ADC Channels: 5
• Timers: 1 x 8-bit, 1 x 16-bit
• Communication Interfaces: USART, SPI, I2C

Detailed Pin Configuration

The PIC16F84A-20I/P has a total of 18 pins, each serving a specific purpose. The pin configuration is as follows:

1. VDD - Positive power supply
2. RA2/AN2/CVREF/VREF - Analog input channel 2 / Comparator voltage reference
3. RA3/AN3/VREF-/CVREF-/VREF- - Analog input channel 3 / Comparator negative voltage reference
4. RA4/T0CKI/C1OUT/OSC2 - Timer0 clock input / External clock source input / Comparator output / Oscillator output
5. MCLR/VPP - Master Clear input / Programming voltage input
6. RA0/AN0 - Analog input channel 0
7. RA1/AN1 - Analog input channel 1
8. OSC1/CLKIN - Oscillator input / External clock source input
9. OSC2/CLKOUT - Oscillator output / Clock output
10. RC0/T1OSO/T1CKI - Timer1 oscillator output / Timer1 clock input
11. RC1/T1OSI/CCP2 - Timer1 oscillator input / Capture/Compare/PWM module 2
12. RC2/CCP1 - Capture/Compare/PWM module 1
13. RC3/SCK/SCL - Serial clock input (SPI/I2C)
14. RC4/SDI/SDA - Serial data input (SPI/I2C)
15. RC5/SDO - Serial data output (SPI)
16. VSS - Ground
17. RB0/INT - External interrupt input
18. RB1/DT/SDO - Data terminal / Serial data output (USART)

Functional Features

• High-performance RISC CPU for efficient processing
• Flash program memory for easy reprogramming
• EEPROM data memory for non-volatile storage
• I/O ports with programmable pull-up resistors for flexibility
• Timer/counter modules for precise timing operations
• Serial communication interface for data exchange
• Watchdog timer for system reliability
• Power-saving sleep mode to conserve energy

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered applications.
• High-performance CPU enables fast and efficient processing.
• Flash program memory allows for easy updates and modifications.
• Wide range of communication interfaces provides versatility.
• Compact package size makes it suitable for space-constrained designs.

Disadvantages

• Limited program memory size may restrict the complexity of applications.
• Limited data memory size may limit the amount of data that can be stored.
• Lack of advanced features compared to more modern microcontrollers.

Working Principles

The PIC16F84A-20I/P operates based on the principles of a RISC (Reduced Instruction Set Computer) architecture. It executes instructions stored in its program memory, manipulating data from its data memory and interacting with external devices through its I/O ports. The microcontroller's CPU performs calculations, controls timing operations, and manages communication with other devices.

Detailed Application Field Plans

The PIC16F84A-20I/P finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Automotive electronics - Medical devices - Consumer electronics - Robotics

Detailed and Complete Alternative Models

While the PIC16F84A-20I/P is a popular microcontroller, there are alternative models available