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PIC18LF13K22 Datasheet(PDF) 9 Page - Microchip Technology |
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PIC18LF13K22 Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 388 page  2010 Microchip Technology Inc. Preliminary DS41365D-page 9 PIC18F1XK22/LF1XK22 1.0 DEVICE OVERVIEW This family offers the advantages of all PIC18 microcontrollers – namely, high computational performance with the addition of high-endurance, Flash program memory. On top of these features, the PIC18F1XK22/LF1XK22 family introduces design enhancements that make these microcontrollers a logical choice for many high-performance, power sensitive applications. 1.1 New Core Features 1.1.1 nanoWatt XLP TECHNOLOGY All of the devices in the PIC18F1XK22/LF1XK22 family incorporate a range of features that can significantly reduce power consumption during operation. Key items include: • Multiple Idle Modes: The controller can also run with its CPU core disabled but the peripherals still active. In these states, power consumption can be reduced even further, to as little as 4% of normal operation requirements. • On-the-fly Mode Switching: The power-managed modes are invoked by user code during operation, allowing the user to incorporate power-saving ideas into their application’s software design. • Low Consumption in Key Modules: The power requirements for both Timer1 and the Watchdog Timer are minimized. See Section 25.0 “Electrical Specifications” for values. 1.1.2 MULTIPLE OSCILLATOR OPTIONS AND FEATURES All of the devices in the PIC18F1XK22/LF1XK22 family offer ten different oscillator options, allowing users a wide range of choices in developing application hardware. These include: • Four Crystal modes, using crystals or ceramic resonators • External Clock modes, offering the option of using two pins (oscillator input and a divide-by-4 clock output) or one pin (oscillator input, with the sec- ond pin reassigned as general I/O) • External RC Oscillator modes with the same pin options as the External Clock modes • An internal oscillator block which contains a 16 MHz HFINTOSC oscillator and a 31 kHz LFINTOSC oscillator which together provide 8 user selectable clock frequencies, from 31 kHz to 16 MHz. This option frees the two oscillator pins for use as additional general purpose I/O. • A Phase Lock Loop (PLL) frequency multiplier, available to both the high-speed crystal and inter- nal oscillator modes, which allows clock speeds of up to 64 MHz. Used with the internal oscillator, the PLL gives users a complete selection of clock speeds, from 31 kHz to 32 MHz – all without using an external crystal or clock circuit. Besides its availability as a clock source, the internal oscillator block provides a stable reference source that gives the family additional features for robust operation: • Fail-Safe Clock Monitor: This option constantly monitors the main clock source against a refer- ence signal provided by the LFINTOSC. If a clock failure occurs, the controller is switched to the internal oscillator block, allowing for continued operation or a safe application shutdown. • Two-Speed Start-up: This option allows the internal oscillator to serve as the clock source from Power-on Reset, or wake-up from Sleep mode, until the primary clock source is available. |
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