PIC18F24J10-E/ML MICROCHIP [Microchip Technology], PIC18F24J10-E/ML Datasheet - Page 25

• Manufacturer Part Number: PIC18F24J10-E/ML
• Description: 28/40/44-Pin High-Performance RISC Microcontrollers with nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

2.0
2.1
The PIC18F45J10 family of devices can be operated in
five different oscillator modes:
1.
2.
3.
4.
5.
Four of these are selected by the user by programming
the FOSC2:FOSC0 configuration bits. The fifth mode
(INTRC) may be invoked under software control; it can
also be configured as the default mode on device
Resets.
2.2
In HS or HSPLL Oscillator modes, a crystal or ceramic
resonator is connected to the OSC1 and OSC2 pins to
establish
connections.
The oscillator design requires the use of a parallel cut
crystal.
© 2007 Microchip Technology Inc.
Note:
HS
HSPLL High-Speed Crystal/Resonator
EC
ECPLL External Clock with Software PLL
INTRC Internal 31 kHz Oscillator
OSCILLATOR
CONFIGURATIONS
Oscillator Types
Crystal Oscillator/Ceramic
Resonators (HS Modes)
oscillation.
Use of a series cut crystal may give a fre-
quency out of the crystal manufacturer’s
specifications.
Control
High-Speed Crystal/Resonator
with Software PLL Control
External Clock with F
Figure 2-1
OSC
shows
/4 Output
the
Preliminary
pin
PIC18F45J10 FAMILY
FIGURE 2-1:
TABLE 2-1:
Capacitor values are for design guidance only.
These capacitors were tested with the resonators
listed below for basic start-up and operation. These
values are not optimized.
Different capacitor values may be required to produce
acceptable oscillator operation. The user should test
the performance of the oscillator over the expected
V
See the notes following Table 2-2 for additional
information.
DD
Note 1: See Table 2-1 and Table 2-2 for initial values of
Mode
HS
and temperature range for the application.
C1
C2
2: A series resistor (R
3: R
(1)
(1)
Typical Capacitor Values Used:
C1 and C2.
strip cut crystals.
F
16.0 MHz
XTAL
8.0 MHz
varies with the oscillator mode chosen.
Freq.
R
Resonators Used:
S (2)
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
OSC1
OSC2
16.0 MHz
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS OR HSPLL
CONFIGURATION)
4.0 MHz
8.0 MHz
S
OSC1
27 pF
22 pF
) may be required for AT
R
F
(3)
DS39682C-page 23
PIC18F45J10
Sleep
OSC2
27 pF
22 pF
To
Internal
Logic