PIC16F84AT-20I/SO

Product Overview

Category

The PIC16F84AT-20I/SO belongs to the category of microcontrollers.

Use

This microcontroller is widely used in various electronic applications that require embedded control and processing capabilities.

Characteristics

• Low power consumption
• High-performance RISC CPU
• Flash program memory
• EEPROM data memory
• I/O ports
• Timers/counters
• Serial communication interface
• Analog-to-digital converter (ADC)
• Watchdog timer
• Brown-out reset

Package

The PIC16F84AT-20I/SO is available in a small outline (SO) package, which allows for easy integration into compact electronic devices.

Essence

The essence of the PIC16F84AT-20I/SO lies in its ability to provide efficient and reliable control and processing capabilities in a compact form factor.

Packaging/Quantity

This microcontroller is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of units. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating voltage: 2.0V to 5.5V
• Maximum clock frequency: 20 MHz
• Flash program memory: 1K words
• Data EEPROM memory: 64 bytes
• I/O pins: 13
• Timers/counters: 1 x 8-bit, 1 x 16-bit
• ADC resolution: 8 bits
• Serial communication interface: USART
• Watchdog timer period: Selectable

Detailed Pin Configuration

The PIC16F84AT-20I/SO 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 reference voltage
3. RA3/AN3/VREF - Analog input/Comparator reference voltage
4. RA4/T0CKI/C1OUT - Timer0 clock input/External clock source input/Comparator output
5. MCLR/VPP - Master Clear input/Voltage programming input
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/Timer1 clock input
11. RC1/T1OSI/CCP2 - Timer1 oscillator input/Timer1 capture/compare/PWM output
12. RC2/CCP1 - Capture/compare/PWM output
13. RC3/SCK/SCL - Serial clock input
14. RC4/SDI/SDA - Serial data input
15. RC5/SDO - Serial data output
16. VSS - Ground
17. RB0/INT - External interrupt input
18. RB1 - General-purpose I/O

Functional Features

The PIC16F84AT-20I/SO offers several functional features that enhance its usability and performance:

1. Flash program memory allows for easy reprogramming of the microcontroller.
2. EEPROM data memory enables non-volatile storage of critical data.
3. I/O ports provide connectivity to external devices and peripherals.
4. Timers/counters facilitate precise timing and event counting operations.
5. Serial communication interface (USART) enables communication with other devices.
6. Analog-to-digital converter (ADC) allows for conversion of analog signals into digital values.
7. Watchdog timer ensures system reliability by resetting the microcontroller in case of a malfunction.
8. Brown-out reset protects the microcontroller from voltage fluctuations.

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered applications.
• High-performance RISC CPU provides efficient processing capabilities.
• Compact form factor allows for integration into space-constrained designs.
• Flash program memory enables easy firmware updates.
• Wide operating voltage range enhances versatility.

Disadvantages

• Limited program memory capacity may restrict the complexity of applications.
• 8-bit ADC resolution may not be sufficient for certain precision measurement requirements.
• Lack of advanced peripherals compared to more modern microcontrollers.

Working Principles

The PIC16F84AT-20I/SO operates based on the principles of a reduced instruction set computer (RISC) architecture. It executes instructions stored in its program memory, manipulating data from various sources such as I/O ports, timers, and ADC. The microcontroller follows a sequential execution model, performing tasks based on the program flow and external events.

Detailed Application Field Plans

The PIC16F84AT-20I/SO finds application in various fields, including but not limited to:

1. Home automation