PIC16F84A-04E/SS

Introduction

The PIC16F84A-04E/SS is a microcontroller belonging to the PIC16F series, which is widely used in embedded systems and electronic applications. This entry provides an overview of the product, including its category, use, characteristics, package, essence, packaging/quantity, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

• Category: Microcontroller
• Use: Embedded systems, electronic applications
• Characteristics: Low power consumption, high performance, versatile I/O capabilities
• Package: SSOP (Shrink Small Outline Package)
• Essence: Control and process data in embedded systems
• Packaging/Quantity: Typically available in reels or tubes

Specifications

• Operating Voltage: 2.0V - 5.5V
• CPU Speed: 4 MHz
• Program Memory Size: 1.75KB
• RAM Size: 68 bytes
• I/O Pins: 13
• Timers: 1 x 8-bit, 1 x 16-bit
• Communication Peripherals: UART, SPI, I2C

Detailed Pin Configuration

The PIC16F84A-04E/SS features a total of 18 pins, each serving specific functions related to input/output, power supply, clock, and communication.

| Pin Number | Name | Function | |------------|------------|---------------------------| | 1 | VDD | Power Supply (VDD) | | 2 | RA2 | I/O Port | | 3 | RA3 | I/O Port | | 4 | RA4/T0CKI | I/O Port / Clock Input | | 5 | VSS | Ground (VSS) | | 6 | RA0/AN0 | I/O Port / Analog Input | | 7 | RA1/AN1 | I/O Port / Analog Input | | 8 | RA5/MCLR | I/O Port / Master Clear | | 9 | RB0/INT | I/O Port / Interrupt | | 10 | RB1 | I/O Port | | 11 | RB2 | I/O Port | | 12 | RB3 | I/O Port | | 13 | RB4 | I/O Port | | 14 | RB5 | I/O Port | | 15 | RB6/PGC | I/O Port / Programming | | 16 | RB7/PGD | I/O Port / Programming | | 17 | VDD | Power Supply (VDD) | | 18 | VSS | Ground (VSS) |

Functional Features

• Versatile I/O capabilities for interfacing with external devices
• Integrated timers for precise timing control
• Communication peripherals for serial and parallel data transfer
• On-chip oscillator for clock generation
• Low-power modes for energy-efficient operation

Advantages and Disadvantages

Advantages

• Low power consumption
• High-performance CPU
• Rich set of integrated peripherals
• Cost-effective solution for embedded systems

Disadvantages

• Limited program memory size
• Relatively low RAM capacity
• Limited I/O pins for complex applications

Working Principles

The PIC16F84A-04E/SS operates based on the Harvard architecture, featuring separate program and data memories. It executes instructions fetched from the program memory and processes data stored in the data memory. The microcontroller interacts with external devices through its I/O ports and communication peripherals, enabling it to control and monitor various electronic systems.

Detailed Application Field Plans

The PIC16F84A-04E/SS finds extensive use in the following application fields: - Home automation systems - Industrial control systems - Consumer electronics - Automotive electronics - Medical devices - Sensor interfaces

Detailed and Complete Alternative Models

Several alternative models to the PIC16F84A-04E/SS include: - PIC16F627A - PIC16F628A - PIC16F648A - PIC16F88

These alternatives offer varying combinations of program memory size, I/O capabilities, and communication peripherals, catering to different application requirements.

In conclusion, the PIC16F84A-04E/SS microcontroller serves as a versatile and cost-effective solution for embedded systems and electronic applications, offering a balance of performance, power efficiency, and integrated features.

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