Microchip PIC16F1847-I/P 8-Bit Microcontroller Technical Overview and Application Guide
The Microchip PIC16F1847-I/P is a versatile 8-bit microcontroller unit (MCU) from Microchip Technology's extensive PIC® MCU family. Housed in a 18-pin PDIP package, this device is engineered for a wide array of embedded control applications, balancing performance, power efficiency, and cost-effectiveness. It is built on Microchip's enhanced mid-range core with a 16-level deep hardware stack and 49 instructions, offering improved performance over its baseline and mid-range predecessors.
Core Architectural Features
At the heart of the PIC16F1847 lies an enhanced Harvard architecture core that can operate at a maximum frequency of 32 MHz, delivering a single-cycle instruction execution for most instructions (except branches). This translates to a computational throughput of 8 MIPS at 32 MHz. The MCU features 3.5 KB of Flash program memory and 128 bytes of RAM, providing ample space for complex firmware in applications like sensor interfacing, motor control, and user interface management.
A standout feature of this microcontroller is its rich set of integrated peripherals. It includes:
mTouch™ Capacitive Sensing Module (CSC): Enables the implementation of robust touch sensing interfaces without external components.
Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART): Supports both LIN and DMX protocols, ideal for serial communication networks.
Master Synchronous Serial Port (MSSP): Configurable as either I²C or SPI, facilitating communication with a vast ecosystem of sensors, memories, and other peripherals.
Complementary Waveform Generator (CWG): Outputs complementary signals with dead-band control, perfect for driving half-bridge and full-bridge circuits in power control systems.
5-Channel 10-bit Analog-to-Digital Converter (ADC) with a Voltage Reference module for precise analog signal acquisition.
Two Comparators and a Temperature Indicator for internal system monitoring.
Low-Power and Robust Operation
The device is designed for low-power operation, featuring nanoWatt XLP technology that allows it to operate in sleep modes with current draw as low as 20 nA. This makes it exceptionally suitable for battery-powered and energy-harvesting applications. Its robust operating characteristics include a wide voltage range from 2.3V to 5.5V and an industrial temperature range from -40°C to +85°C, ensuring reliability in harsh environments.
Application Guide
The PIC16F1847's peripheral set makes it a prime candidate for numerous applications:
Consumer Electronics: Touch-sensitive control panels for appliances, remote controls, and smart home devices leveraging the CSC module.
Automotive: Simple body control modules, interior lighting controllers, and sensor nodes using its serial communication capabilities.
Industrial Control: Small-scale motor control (e.g., fans, blowers) using the CWG, and data acquisition systems utilizing its ADC.
Internet of Things (IoT) Endpoints: As a smart sensor node, collecting and preprocessing data before transmission to a larger network gateway.
ICGOOODFIND: The Microchip PIC16F1847-I/P stands out as a highly integrated and flexible 8-bit MCU solution. Its powerful peripheral mix, including dedicated capacitive sensing and motor control hardware, combined with its ultra-low-power capabilities, provides developers with a single-chip answer for designing innovative, efficient, and reliable embedded systems across a diverse range of markets.
Keywords:
1. Enhanced Mid-R Core
2. Capacitive Sensing (mTouch)
3. Complementary Waveform Generator (CWG)
4. nanoWatt XLP Technology
5. Integrated Peripherals
