PIC16F84A-20E/SS

Product Overview

Category

The PIC16F84A-20E/SS belongs to the category of microcontrollers.

Use

This microcontroller is commonly used in various electronic applications that require embedded 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 modules for precise timing operations
• Analog-to-digital converter (ADC)
• Serial communication interface

Package

The PIC16F84A-20E/SS is available in a small surface mount package, denoted as SS. This package offers compactness and ease of integration into electronic circuits.

Essence

The essence of the PIC16F84A-20E/SS lies in its ability to provide a cost-effective solution for controlling and managing various electronic systems.

Packaging/Quantity

This microcontroller is typically packaged in reels or tubes, containing a specific quantity per package. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Operating Voltage: 2.0V to 5.5V
• Maximum Clock Frequency: 20 MHz
• Flash Program Memory: 1.75 KB
• RAM Data Memory: 68 bytes
• I/O Pins: 13
• ADC Resolution: 8 bits
• Timers: 1 x 8-bit, 1 x 16-bit
• Communication Interfaces: UART, SPI, I2C

Detailed Pin Configuration

The PIC16F84A-20E/SS 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/Comparator voltage reference
3. RA3/AN3/VREF - Analog input/Comparator voltage reference
4. RA4/T0CKI/C1OUT - Timer0 clock input/Comparator output
5. MCLR/VPP - Master Clear input/Voltage programming pin
6. RA0/AN0 - Analog input
7. RA1/AN1 - Analog input
8. OSC1/CLKIN - Oscillator input
9. OSC2/CLKOUT - Oscillator output
10. RC0/T1OSO/T1CKI - Timer1 oscillator output/T1 clock input
11. RC1/T1OSI/CCP2 - Timer1 oscillator input/CCP2 module
12. RC2/CCP1 - CCP1 module
13. RC3/SCK/SCL - Serial clock input
14. RC4/SDI/SDA - Serial data input
15. RC5/SDO - Serial data output
16. RC6/TX/CK - USART transmit/USART synchronous clock
17. RC7/RX/DT - USART receive/USART asynchronous clock
18. VSS - Ground

Functional Features

The PIC16F84A-20E/SS offers several functional features that enhance its usability and versatility:

1. Flash Program Memory: Allows for easy reprogramming of the microcontroller, enabling flexibility in application development.
2. EEPROM Data Memory: Provides non-volatile storage for critical data, ensuring data retention even when power is lost.
3. I/O Ports with Programmable Pull-up Resistors: Simplifies interfacing with external devices by eliminating the need for external pull-up resistors.
4. Timer Modules: Facilitates precise timing operations, essential for time-critical applications.
5. Analog-to-Digital Converter (ADC): Enables the microcontroller to convert analog signals into digital values, expanding its capability to interface with analog sensors and devices.
6. Serial Communication Interface: Supports various serial communication protocols such as UART, SPI, and I2C, enabling seamless integration with other devices.

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life in portable applications.
• High-performance RISC CPU ensures efficient execution of instructions.
• Wide operating voltage range allows for compatibility with different power sources.
• Flash program memory enables easy firmware updates and modifications.
• Compact package size facilitates space-constrained designs.

Disadvantages

• Limited program memory capacity may restrict the complexity of applications.
• Relatively low RAM data memory may limit the storage of variables and data structures.
• 8-bit ADC resolution may not be sufficient for certain high-precision analog measurements.
• Lack of advanced peripherals and features compared to more modern microcontrollers.

Working Principles

The PIC16F84A-20E/SS operates based on the principles of a reduced instruction set computer (RISC) architecture. It executes instructions stored in its program memory, manipulating data from registers and memory locations. The micro