Microchip PIC16F18875-I/PT Microcontroller: Features and Application Design Guide

The Microchip PIC16F18875-I/PT is a high-performance 8-bit microcontroller from Microchip’s enhanced mid-range PIC16F188xx family. Combining advanced peripherals, robust core architecture, and efficient power management, this MCU is engineered for a wide array of embedded applications—from industrial automation and consumer electronics to IoT edge devices and automotive systems.

Key Features of the PIC16F18875-I/PT

Built around an optimized 8-bit core with a hardware multiplier, the PIC16F18875 operates at up to 32 MHz, delivering a strong balance of processing power and energy efficiency. It includes 32 KB of Flash memory and 2 KB of RAM, providing ample space for embedded applications.

One of its standout capabilities is the Integrated Intelligent Peripherals, which offload timing-critical and complex tasks from the CPU. These include:

- Memory Access Partition (MAP): Supports bootloader and application flexibility.

- Complementary Waveform Generator (CWG): Ideal for motor control and power conversion.

- Signal Measurement Timer (SMT): For high-resolution timing and frequency measurement.

- Peripheral Pin Select (PPS): Allows dynamic remapping of digital pins for superior design flexibility.

The device also incorporates advanced analog features, such as a 12-bit ADC with Computation (ADC²), which performs data processing without CPU intervention. Additional analog integration includes a 5-bit DAC, comparators, and a Zero-Cross Detection (ZCD) module, making it suitable for sensor interfaces and power control applications.

Connectivity is enhanced with EUSART, I²C, and SPI modules, supporting various communication protocols. The MCU also features low-power operation modes and Nanowatt XLP technology, essential for battery-powered devices.

Application Design Guide

When designing with the PIC16F18875-I/PT, begin by leveraging Microchip’s MPLAB® X IDE and MCC (MPLAB Code Configurator) for quick peripheral setup and code generation.

For motor control applications, use the CWG, PWM, and ZCD modules to implement brushless DC (BLDC) or stepper motor control with high precision and minimal software overhead. The SMT can capture feedback signals for closed-loop control.

In sensing and data logging, the ADC² automates averaging, filtering, and threshold comparison, reducing CPU load and power consumption. Coupled with the MCU’s large memory, it can buffer data before transmission via SPI or I²C.

For low-power systems, utilize the built-in IDLE and DOZE modes to drastically cut power during inactive periods. The watchdog timer and brown-out reset enhance system reliability.

Always decouple power supplies properly and follow EMI/EMC best practices for noise-sensitive analog sections. Use the PPS to optimize PCB layout and simplify routing.

Summary by ICGOODFIND

The PIC16F18875-I/PT stands out with its rich set of intelligent peripherals, high integration, and ultra-low-power features, making it a versatile solution for modern embedded designs requiring performance, efficiency, and design flexibility.

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Keywords:

Microcontroller, Intelligent Peripherals, Low-Power Design, Embedded Systems, PIC16F18875