PIC18F45J10 FAMILY
1.1.2
MULTIPLE OSCILLATOR OPTIONS
AND FEATURES
1.0
DEVICE OVERVIEW
This document contains device specific information for
the following devices:
All of the devices in the PIC18F45J10 family offer three
different oscillator options. These include:
• PIC18F24J10
• PIC18F25J10
• PIC18F44J10
• PIC18F45J10
• PIC18LF24J10
• PIC18LF25J10
• PIC18LF44J10
• PIC18LF45J10
• Two Crystal modes, using crystals or ceramic
resonators
• Two External Clock modes
• INTRC source (approximately 31 kHz)
This family offers the advantages of all PIC18
microcontrollers – namely, high computational perfor-
mance at an economical price. The PIC18F45J10 family
introduces design enhancements that make these micro-
controllers a logical choice for many high-performance,
power sensitive applications.
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 internal oscillator. If a
clock failure occurs, the controller is switched to
the internal oscillator block, allowing for continued
low-speed operation or a safe application
shutdown.
1.1
Core Features
1.1.1
LOW POWER
All of the devices in the PIC18F45J10 family
incorporate a range of features that can significantly
reduce power consumption during operation. Key
items include:
• 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.
• Alternate Run Modes: By clocking the controller
from the Timer1 source or the internal oscillator
block, power consumption during code execution
can be reduced by as much as 90%.
• 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 24.0 “Electrical Characteristics”
for values.
© 2009 Microchip Technology Inc.
DS39682E-page 7
MICROCHIP [ MICROCHIP ]
