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PIC16F84A-20/P
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PIC16F84A-20/P

Product Overview

Category

The PIC16F84A-20/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
  • Wide operating voltage range
  • Flash program memory
  • EEPROM data memory
  • I/O ports with programmable pull-up resistors
  • Timer/counter modules
  • Serial communication interface

Package

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

Essence

This microcontroller is designed to provide efficient control and processing capabilities in a compact package.

Packaging/Quantity

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

Specifications

  • Operating Voltage: 2.0V to 5.5V
  • Maximum Clock Frequency: 20 MHz
  • Flash Program Memory: 1K words
  • Data Memory (RAM): 68 bytes
  • EEPROM Data Memory: 64 bytes
  • I/O Pins: 13
  • Timers: 1 x 8-bit, 1 x 16-bit
  • Communication Interfaces: USART, SPI, I2C

Detailed Pin Configuration

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

  1. VDD - Power supply voltage
  2. RA2/AN2/CVREF/VREF - Analog input channel 2 / Comparator reference voltage / Voltage reference
  3. RA3/AN3/VREF-/CVREF-/VREF- - Analog input channel 3 / Negative comparator reference voltage / Negative voltage reference
  4. RA4/T0CKI/C1OUT/RCV - Timer0 clock input / Comparator output / USART receive pin
  5. MCLR/VPP - Master Clear input / Programming voltage supply
  6. RA0/AN0 - Analog input channel 0
  7. RA1/AN1 - Analog input channel 1
  8. OSC1/CLKIN - Oscillator input
  9. OSC2/CLKOUT - Oscillator output
  10. RC0/T1OSO/T1CKI/CCP1 - Timer1 oscillator output / Timer1 clock input / CCP1 module pin
  11. RC1/T1OSI/CCP2 - Timer1 oscillator input / CCP2 module pin
  12. RC2/CCP1 - CCP1 module pin
  13. VSS - Ground
  14. RB0/INT/CCP1 - External interrupt input / CCP1 module pin
  15. RB1/SDI/SDA - SPI data input / I2C data input
  16. RB2/SDO/SCL - SPI data output / I2C clock input
  17. RB3/PGM - Programming mode select
  18. RB4/PGC - Programming clock

Functional Features

The PIC16F84A-20/P offers several functional features that enhance its usability and performance:

  • Flash program memory allows for easy reprogramming of the microcontroller.
  • EEPROM data memory provides non-volatile storage for critical data.
  • I/O ports with programmable pull-up resistors simplify interfacing with external devices.
  • Timer/counter modules enable precise timing and event counting.
  • Serial communication interfaces (USART, SPI, I2C) facilitate data exchange with other devices.

Advantages and Disadvantages

Advantages

  • Low power consumption makes it suitable for battery-powered applications.
  • High-performance RISC CPU ensures efficient execution of instructions.
  • Wide operating voltage range allows for flexibility in power supply selection.
  • Compact package size enables integration into space-constrained designs.

Disadvantages

  • Limited program memory (1K words) may restrict the complexity of applications.
  • Limited data memory (68 bytes RAM, 64 bytes EEPROM) may impose constraints on data storage and manipulation.
  • Lack of advanced peripherals (e.g., ADC, PWM) may limit its suitability for certain applications.

Working Principles

The PIC16F84A-20/P operates based on the principles of a RISC (Reduced Instruction Set Computer) architecture. It executes instructions stored in its program memory to perform various tasks. The microcontroller interacts with external devices through its I/O ports, timers, and communication interfaces. By manipulating these resources, it can control and process data according to the programmed instructions.

Detailed Application Field Plans

The PIC16F84A-20/P finds application in various fields, including but not limited to:

  1. Home automation systems
  2. Industrial control systems
  3. Automotive electronics
  4. Consumer electronics
  5. Medical devices
  6. Robotics

技術ソリューションにおける PIC16F84A-20/P の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the maximum clock frequency of PIC16F84A-20/P?
    - The maximum clock frequency of PIC16F84A-20/P is 20 MHz.

  2. How many I/O pins does PIC16F84A-20/P have?
    - PIC16F84A-20/P has a total of 13 I/O pins.

  3. What is the program memory size of PIC16F84A-20/P?
    - The program memory size of PIC16F84A-20/P is 1K x 14 (1,024 words).

  4. Can PIC16F84A-20/P be used for controlling DC motors?
    - Yes, PIC16F84A-20/P can be used for controlling DC motors through its I/O pins and PWM capabilities.

  5. Does PIC16F84A-20/P have built-in analog-to-digital conversion (ADC) capability?
    - No, PIC16F84A-20/P does not have built-in ADC capability.

  6. What are the communication interfaces supported by PIC16F84A-20/P?
    - PIC16F84A-20/P supports serial communication through its USART module.

  7. Is PIC16F84A-20/P suitable for battery-powered applications?
    - Yes, PIC16F84A-20/P is suitable for battery-powered applications due to its low power consumption.

  8. Can PIC16F84A-20/P be programmed using a high-level language like C?
    - Yes, PIC16F84A-20/P can be programmed using high-level languages like C through appropriate compilers.

  9. What are the typical applications of PIC16F84A-20/P?
    - Typical applications of PIC16F84A-20/P include embedded control systems, consumer electronics, and industrial automation.

  10. Is PIC16F84A-20/P suitable for temperature sensing applications?
    - Yes, PIC16F84A-20/P can be used for temperature sensing applications with the addition of external temperature sensors connected to its I/O pins.