PIC16F191xx Microcontrollers Microchip Technology PIC16F191xx Microcontrollers feature analog, Core Independent and Communication Peripherals (CIPS) combined with eXtreme Low-Power (XLP) technology for use in general-purpose and low-power applications. The PIC16F191xx features CRC/SCAN, Hardware Limit Timer (HLT), and Windowed Watchdog Timer (WWDT), adding security to the application.