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Microchip Simplifies the Design of Low-Power LCD Applications


PIC16F19197 Microcontroller Family Combines Battery-Friendly LCD Drive


A new family of low-power microcontrollers (MCUs) for driving Liquid Crystal Displays (LCD) featuring Core Independent Peripherals (CIPs) and intelligent analog is now available from Microchip. The nine-member PIC16F19197 family includes a battery-friendly LCD drive charge pump, 12-bit Analog-to-Digital Converter with computation (ADC2), a low-power comparator and active clock tuning of its high-frequency oscillator. They are the first 8-bit MCUs optimized for popular low-power and battery-powered touch-enabled LCD applications.

Click for Larger Image - Microchip Simplifies the Design of Low-Power LCD Applications The PIC16F19197 family consists of 28- to 64-pin devices with up to 56 KB Flash and 4 KB RAM. The charge pump ensures that LCD screens maintain consistent contrast even as battery voltage drops. The ADC2 automates signal acquisition and processing tasks, making robust touch buttons and sliders easy to implement. Additionally, the Active Clock Tuning feature provides customers with an extremely stable oscillator across the entire voltage and temperature operating range. The PIC16F19197 family is able to accomplish this entirely in hardware rather than relying upon software.

The family also features a Real Time Clock and Calendar (RTCC) with battery backup and high-current I/O pins to directly drive the LCD backlighting. Additionally IDLE/DOZE low-power modes and Peripheral Module Disable (PMD) extend battery life. All of these features are offered along with the ability to drive up to 360 LCD segments, making the PIC16F19197 family an ideal choice for battery-powered LCD applications.

Click for Larger Image - Microchip PIC16F1917 Block Diagram “This PIC16F19197 family makes the design of low-power LCD applications easy,” said Steve Drehobl, vice president of Microchip’s 8-bit MCU division. “All of these new features can be set up in MPLAB® Code Configurator (MCC), significantly reducing development time and shortening time to market.”

Technical Specifications of the PIC16F1917 Microcontroller

  • 56KB Flash Memory
  • 256b Data EEPROM
  • 4096b RAM
  • Up to 360 LCD Segments
  • LCD Charge Pump
  • Bias Generator
  • High-Precision Internal Oscillator
    • Active clock tuning of HFINTOSC over voltage and temperature
  • 59 I/O Pins
  • 12-bit ADC2, 45 ch
  • 5-bit DAC
  • 2 x Comparator (1 Low-Power, 1 High-Speed)
  • 2 x 8-bit Timers w/ HLT
  • 2 x 16-bit Timers
  • Windowed Watchdog Timer
  • 2 x CCP
  • 2 x EUSART
  • 1 x I2C
  • 1 x SPI
  • Temperature Sensor


More information on the PIC16F19197 Microcontroller can be found on the Microchip Web site at Microchip PIC16F19197 Microcontroller product page

Note: The Microchip name and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A and other countries. All other trademarks mentioned herein are the property of their respective companies.


The company's Web site address is www.microchip.com
[Reprinted with kind permission from Microchip Corporation - Release Date, 31st May, 2017]