Microchip PIC16F1933T-I/ML 8-Bit Microcontroller Datasheet and Design Guide
The Microchip PIC16F1933T-I/ML is a powerful and versatile 8-bit microcontroller built on Microchip’s enhanced mid-range core. This device is part of the PIC16F193x family, which is renowned for its rich peripheral set, low power consumption, and robust performance, making it an ideal choice for a vast array of embedded control applications in consumer, industrial, and automotive markets.
Housed in a compact 28-pin QFN (ML) package, this microcontroller is designed for space-constrained applications. Its core features a deep hardware stack and a large set of addressing modes, enabling efficient execution of complex instructions. Operating over a wide voltage range (2.0V to 5.5V), it is exceptionally suited for battery-powered devices.
Key Features and Peripheral Integration
The PIC16F1933T-I/ML stands out with its impressive integration of advanced peripherals:
Enhanced Core with 49 Instructions: Offers a significant performance boost over traditional mid-range cores, with a 50% increase in performance on many linear code sections.
Nanowatt XLP Technology: This feature is critical for ultra-low-power applications. It enables the microcontroller to achieve extremely low current consumption in Sleep mode (typically 20 nA) and facilitates long-term operation on battery power.
Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART): Supports LIN bus protocol, which is essential for automotive network applications.
Master Synchronous Serial Port (MSSP): This module can be configured as either an I²C or SPI interface, providing flexible communication with a wide variety of peripheral chips like sensors, memory, and displays.
Complementary Waveform Generator (CWG): An advanced output module ideal for precise control of switching power converters and motor control applications.
mTouch Capacitive Sensing Module: Allows for the implementation of robust touch sensing interfaces (buttons, sliders, proximity) without requiring external components, reducing system cost and complexity.
Design Considerations and Development Support
Successful implementation of the PIC16F1933T-I/ML requires careful attention to the design guidelines provided in its datasheet. Key areas include:
Power Supply Decoupling: Proper use of decoupling capacitors (typically 0.1 µF ceramic) close to the VDD and VSS pins is mandatory to ensure stable operation and minimize electrical noise.
Clock Configuration: The device supports multiple clock modes: external crystal/resonator, internal and external oscillators. The Internal Oscillator Block provides 16 user-selectable frequencies (from 31 kHz to 32 MHz), offering high accuracy and eliminating the need for external clock components, saving board space and cost.
In-Circuit Serial Programming (ICSP): The design must include a connection header (e.g., 6-pin) for the ICSP interface, allowing for easy firmware programming and debugging.
Analog-to-Digital Converter (ADC) Accuracy: For precision analog sensing, ensure a stable reference voltage and pay careful attention to PCB layout to minimize digital noise coupling into analog traces.
Development Ecosystem: Microchip provides extensive support through the MPLAB X Integrated Development Environment (IDE) and the XC8 compiler. Low-cost hardware tools like the PICkit™ 4 In-Circuit Debugger allow for rapid prototyping and debugging.
The Microchip PIC16F1933T-I/ML is a highly integrated and power-efficient 8-bit MCU. Its combination of the enhanced mid-range core, Nanowatt XLP technology, and a rich set of peripherals like the CWG and mTouch module makes it an outstanding solution for designers creating next-generation products in motor control, consumer electronics, and low-power sensor nodes.
Keywords:
1. 8-Bit Microcontroller
2. Nanowatt XLP Technology
3. Enhanced Peripherals
4. Capacitive Sensing (mTouch)
5. Low-Power Design
