Microchip PIC16F1936-I/ML 8-Bit Microcontroller Datasheet and Design Guide

The Microchip PIC16F1936-I/ML is a high-performance, 8-bit microcontroller built on an enhanced mid-range core with a versatile array of peripherals, making it a robust solution for a wide range of embedded control applications. This device is housed in a compact 28-pin QFN (ML) package, ideal for space-constrained designs requiring a rich feature set.

Core Architecture and Performance

At its heart, the PIC16F1936 utilizes an enhanced Harvard architecture with a 14-bit wide instruction set. The core operates at speeds up to 32 MHz, delivering a performance of 8 MIPS. A significant feature is the inclusion of a 16-level deep hardware stack and 49 instructions. Its nanowatt technology power management modes are critical for battery-powered applications, allowing for ultra-low-power operation through multiple dynamically selectable clock modes and sleep states.

Memory Organization

The microcontroller boasts 8 KB of Flash program memory with self-read/write capability, facilitating the implementation of bootloaders and data storage. It is complemented by 512 bytes of RAM and 256 bytes of high-endurance EEPROM for non-volatile data storage, providing ample space for both application code and critical data parameters.

Integrated Peripherals and Analog Capabilities

A standout feature of the PIC16F1936 is its rich set of integrated peripherals, which reduces external component count and total system cost.

Analog-to-Digital Converter (ADC): A 10-bit ADC with up to 14 channels and an internal voltage reference provides precise analog signal acquisition.

Timers: The device includes multiple timers (Timer0, Timer1, Timer2) and two Capture, Compare, PWM (CCP) modules, along with an Enhanced CCP (ECCP) for sophisticated motor control and power conversion applications.

Communication Interfaces: It supports multiple serial communication protocols, including EUSART (for RS-232/485), SPI, and I2C, ensuring easy connectivity with sensors, displays, and other peripherals.

Complementary Waveform Generator (CWG): This peripheral is essential for generating complementary output signals for controlling half-bridge and full-bridge drivers in power control systems.

mTouch Sensing: The controller features capacitive sensing (mTouch) hardware, enabling the design of robust and responsive touch interfaces without external components.

Design Considerations and Development Support

Successful implementation requires careful attention to the design guidelines provided in the datasheet. Power supply decoupling with capacitors close to the VDD and VSS pins is mandatory for stable operation. For analog measurements, proper PCB layout to minimize noise on analog traces is crucial. Utilizing the internal oscillators (32 MHz and 31 kHz) can save board space and cost, though external crystals may be needed for timing-critical applications. Development is accelerated by Microchip’s free MPLAB X IDE and the PICkit™ programmmer/debugger.

ICGOOODFIND: The PIC16F1936-I/ML stands out as an exceptionally versatile 8-bit MCU, integrating advanced analog, control, and touch sensing peripherals. Its combination of nanowatt power technology, substantial memory, and a compact QFN package makes it an optimal choice for designers tackling complex control tasks in power-sensitive and space-constrained consumer, industrial, and automotive applications.

Keywords:

1. 8-Bit Microcontroller

2. Nanowatt Technology

3. Enhanced Peripherals

4. Capacitive Sensing (mTouch)

5. QFN Package