PIC16F689-E/P

Product Overview

Category

The PIC16F689-E/P belongs to the category of microcontrollers.

Use

This microcontroller is commonly used in various electronic devices and embedded systems for controlling and processing data.

Characteristics

• Low power consumption
• High-performance RISC CPU
• Wide operating voltage range
• Flash program memory
• EEPROM data memory
• I/O ports with individual direction control
• Timers and counters
• Analog-to-digital converter (ADC)
• Serial communication interfaces

Package

The PIC16F689-E/P is available in a 20-pin plastic dual inline package (PDIP).

Essence

The essence of the PIC16F689-E/P lies in its ability to provide a cost-effective solution for applications requiring moderate computational power and peripheral functionality.

Packaging/Quantity

This microcontroller is typically packaged in tubes or trays, with quantities varying depending on the supplier and customer requirements.

Specifications

• CPU: 8-bit RISC
• Program Memory Size: 7.5 KB
• RAM Size: 256 bytes
• Data EEPROM Size: 256 bytes
• Operating Voltage Range: 2.0V to 5.5V
• Maximum Speed: 20 MHz
• I/O Pins: 18
• ADC Channels: 8
• Timers: 3
• Communication Interfaces: USART, SPI, I2C

Detailed Pin Configuration

The PIC16F689-E/P has a total of 20 pins, each serving a specific purpose. The pin configuration is as follows:

1. RA2/AN2/CVREF/VREF-: Analog input channel 2 / Comparator voltage reference / Negative voltage reference
2. RA3/AN3/VREF+: Analog input channel 3 / Positive voltage reference
3. RA4/T0CKI/C1OUT: Timer0 external clock input / Comparator 1 output
4. RA5/AN4/SS/HLVDIN: Analog input channel 4 / Slave select for SPI / High/Low voltage detect input
5. RE0/RD/AN5: Port E, bit 0 / Read control for LCD module / Analog input channel 5
6. RE1/WR/AN6: Port E, bit 1 / Write control for LCD module / Analog input channel 6
7. RE2/CS/AN7: Port E, bit 2 / Chip select for SPI / Analog input channel 7
8. VSS: Ground
9. RA0/AN0: Analog input channel 0
10. RA1/AN1: Analog input channel 1
11. OSC1/CLKI: Oscillator crystal input / External clock source input
12. OSC2/CLKO: Oscillator crystal output / Clock output
13. RC0/T1OSO/T1CKI: Timer1 oscillator output / Timer1 external clock input
14. RC1/T1OSI/CCP2: Timer1 oscillator input / Capture/Compare/PWM 2
15. RC2/CCP1: Capture/Compare/PWM 1
16. RC3/SCK/SCL: Serial clock for SPI/I2C
17. RC4/SDI/SDA: Serial data input for SPI/I2C
18. RC5/SDO: Serial data output for SPI
19. RC6/TX/CK: USART transmit / Asynchronous clock
20. RC7/RX/DT: USART receive / Data terminal ready

Functional Features

The PIC16F689-E/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 individual direction control enable flexible interfacing with external devices.
• Timers and counters facilitate precise timing and event counting operations.
• The built-in analog-to-digital converter (ADC) allows for analog signal measurement and conversion.
• Serial communication interfaces (USART, SPI, I2C) enable seamless communication 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 compatibility with various power sources.
• Ample program memory and RAM size provide sufficient space for code and data storage.
• Versatile I/O pins and communication interfaces offer flexibility in system design.

Disadvantages

• Limited program memory size may restrict the complexity of applications.
• Relatively small number of I/O pins may limit the number of peripheral devices that can be connected directly.

Working Principles

The PIC16F689-E/P operates based on the principles of a typical microcontroller. It executes instructions