PIC18F-LF1XK50 MICROCHIP [Microchip Technology], PIC18F-LF1XK50 Datasheet - Page 9

• Manufacturer Part Number: PIC18F-LF1XK50
• Description: 20-Pin USB Flash Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

1.0
This document contains device specific information for
the following devices:
This family offers the advantages of all PIC18
microcontrollers
performance at an economical price – with the addition
of high-endurance, Flash program memory. On top of
these features, the PIC18F/LF1XK50 family introduces
design
microcontrollers a logical choice for many high-
performance, power sensitive applications.
1.1
1.1.1
All of the devices in the PIC18F/LF1XK50 family incor-
porate a range of features that can significantly reduce
power consumption during operation. Key items
include:
• Alternate Run Modes: By clocking the controller
• Multiple Idle Modes: The controller can also run
• On-the-fly Mode Switching: The power-
• Low Consumption in Key Modules: The
 2010 Microchip Technology Inc.
• PIC18F13K50
• PIC18LF13K50
from the Timer1 source or the internal oscillator
block, power consumption during code execution
can be reduced by as much as 90%.
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.
managed modes are invoked by user code during
operation, allowing the user to incorporate power-
saving ideas into their application’s software
design.
power requirements for both Timer1 and the
Watchdog Timer are minimized. See
Section 27.0 “Electrical Specifications”
for values.
DEVICE OVERVIEW
New Core Features
enhancements
nanoWatt XLP TECHNOLOGY
–
namely,
• PIC18F14K50
• PIC18LF14K50
that
high
make
computational
PIC18F1XK50/PIC18LF1XK50
these
Preliminary
1.1.2
All of the devices in the PIC18F/LF1XK50 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
• External Clock modes, offering the option of using
• External RC Oscillator modes with the same pin
• An internal oscillator block which contains a
• A Phase Lock Loop (PLL) frequency multiplier,
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
• Two-Speed Start-up: This option allows the
resonators
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)
options as the External Clock modes
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.
available to both the high-speed crystal and inter-
nal oscillator modes, which allows clock speeds of
up to 48 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.
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.
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.
MULTIPLE OSCILLATOR OPTIONS
AND FEATURES
DS41350E-page 9