Microchip PIC16F689T-I/SO 8-Bit Flash Microcontroller: Data Sheet and Technical Overview
The PIC16F689T-I/SO from Microchip Technology represents a versatile and cost-effective solution in the world of 8-bit microcontrollers. Housed in a 20-pin SOIC (Small Outline Integrated Circuit) package, this device is designed for a wide array of embedded control applications, including automotive systems, consumer electronics, and industrial control. Its combination of performance, peripheral integration, and nanoWatt low-power technology makes it a standout choice for designers.
Core Architecture and Performance
At its heart, the PIC16F689 is built upon Microchip's enhanced mid-range 8-bit PIC16 core (CPU). It features a 14-bit wide instruction set that offers a streamlined balance between code efficiency and processing speed. The microcontroller operates at a maximum frequency of 20 MHz, achieving a throughput of 5 MIPS (Million Instructions Per Second). This performance is supported by an internal oscillator block that can be software-selectable from 8 MHz to 31 kHz, significantly reducing external component count and system cost.
Memory Configuration
The device boasts 3.5 KB (4096 words) of self-programmable Flash program memory, providing ample space for complex application code and enabling field firmware updates. It is complemented by 256 bytes of SRAM for data handling and 256 bytes of high-endurance EEPROM data memory for critical data storage that must be retained even when power is removed.
Integrated Peripherals and Analog Features
A key strength of the PIC16F689 is its rich set of integrated peripherals, which minimizes the need for external components:
Analog-to-Digital Converter (ADC): A high-resolution 10-bit ADC with up to 11 input channels provides precise measurement capabilities for sensor inputs.
Timers: The module includes three timers (Timer0, Timer1, Timer2) for various timing and counting operations.
Capture/Compare/PWM (CCP) Module: One Enhanced CCP (ECCP) module offers capabilities for Pulse-Width Modulation (PWM) output, crucial for motor control and power management.
Universal Synchronous Asynchronous Receiver Transmitter (USART): This serial communication module supports both RS-232 and RS-485 protocols, enabling robust communication with PCs, peripherals, or other microcontrollers.
Comparator: Two analog comparators with programmable references simplify analog signal conditioning.
nanoWatt Technology for Low-Power Design
Engineered for power-sensitive applications, the PIC16F689 incorporates Microchip's renowned nanoWatt Technology. This suite of features includes multiple selectable oscillator modes (e.g., INTOSC, LP, XT, HS), a Watchdog Timer (WDT), and a fail-safe clock monitor. Most notably, it offers a variety of low-power Sleep modes, allowing the microcontroller to consume minimal current during inactive periods, which is vital for battery-operated devices.
Development Support
Microchip provides a comprehensive ecosystem for development, including the MPLAB X Integrated Development Environment (IDE) and the PICkit™ series of programmers/debuggers. This extensive support ensures a smooth and efficient path from prototyping to mass production.
The Microchip PIC16F689T-I/SO is a highly integrated, flexible, and power-efficient 8-bit microcontroller. Its robust peripheral set, including a 10-bit ADC, EEPROM, and nanoWatt low-power management, makes it an exceptional choice for designers seeking to create sophisticated and reliable embedded systems with a minimal component footprint.
Keywords:
1. 8-bit Microcontroller
2. nanoWatt Technology
3. 10-bit ADC
4. Flash Memory
5. SOIC Package
