Microchip PIC16F689-I/P 8-Bit Microcontroller Overview and Application Guide
The Microchip PIC16F689-I/P is a versatile and cost-effective 8-bit microcontroller belonging to the enhanced mid-range PIC® MCU family. Housed in a 20-pin PDIP package, this device is designed for a wide array of embedded control applications, offering a powerful blend of performance, peripheral integration, and low power consumption. Its architecture is built around an 8-bit RISC CPU core capable of operating at speeds up to 20 MHz, executing most instructions in a single clock cycle, which provides a substantial computational throughput for its class.
A key strength of the PIC16F689 lies in its rich set of integrated peripherals. It features 2048 words of Flash program memory and 256 bytes of RAM, alongside 256 bytes of high-endurance EEPROM data memory for storing critical information without power. The microcontroller includes a 10-bit Analog-to-Digital Converter (ADC) with up to 11 input channels, two comparators, and a Capture/Compare/PWM (CCP) module, making it exceptionally well-suited for analog sensor interfacing and motor control tasks. Furthermore, it incorporates an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) for serial communication (UART, SPI, I2C™) and two timers, including an 8-bit and a 16-bit timer.
A standout feature is its nanoWatt Technology, which drastically reduces power consumption. This technology enables applications to run on battery power for extended periods by offering multiple low-power sleep modes and rapid wake-up times. This makes the PIC16F689-I/P an ideal choice for portable, battery-operated devices like sensor nodes, remote controls, and metering equipment.
In application, the PIC16F689 is a workhorse for industrial and consumer projects. It is commonly used to control small DC motors using its PWM output, read multiple analog sensors through its ADC, and communicate data to a central PC or another microcontroller via its serial port. Its robust I/O capabilities and compact form factor allow it to serve as the brain in systems ranging from automotive interfaces and home appliances to lighting control and power management systems.
ICGOODFIND: The PIC16F689-I/P stands out as a highly integrated, energy-efficient solution for designers seeking a balance of performance and power savings in a 20-pin package. Its comprehensive peripheral set and proven architecture make it a reliable and adaptable choice for countless embedded designs.
Keywords: PIC16F689-I/P, 8-bit Microcontroller, nanoWatt Technology, Analog-to-Digital Converter (ADC), Enhanced Peripherals
