PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 50
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PIC18F85K22-I/PT
Manufacturer Part Number
PIC18F85K22-I/PT
Description
IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F85K22-IPT.pdf
(550 pages)
Specifications of PIC18F85K22-I/PT
Controller Family/series
PIC18
No. Of I/o's
69
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
64MHz
No. Of Timers
8
Core Size
8 Bit
Program Memory Size
32KB
Core Processor
PIC
Speed
64MHz
Connectivity
EBI/EMI, I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
69
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 24x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC18F87K22 FAMILY
3.5
3.5.1
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 crystal rated
for parallel resonant operation.
TABLE 3-2:
DS39960D-page 50
Capacitor values are for design guidance only.
Different capacitor values may be required to produce
acceptable oscillator operation. The user should test
the performance of the oscillator over the expected
V
to the following application notes for oscillator-specific
information:
• AN588, “PIC
• AN826, “Crystal Oscillator Basics and Crystal
• AN849, “Basic PIC
• AN943, “Practical PIC
• AN949, “Making Your Oscillator Work”
See the notes following
information.
Note:
DD
Mode
Guide”
Selection for rfPIC
Design”
HS
and temperature range for the application. Refer
External Oscillator Modes
Typical Capacitor Values Used:
oscillation.
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS (HS MODES)
Use of a crystal rated for series resonant
operation may give a frequency out of the
crystal manufacturer’s specifications.
16.0 MHz
8.0 MHz
Freq.
®
Microcontroller Oscillator Design
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
®
®
and PIC
Oscillator Design”
Figure 3-4
®
Oscillator Analysis and
Table 3-3
OSC1
27 pF
22 pF
®
Devices”
shows
for additional
OSC2
27 pF
22 pF
the
pin
TABLE 3-3:
FIGURE 3-4:
Osc Type
Capacitor values are for design guidance only.
Different capacitor values may be required to produce
acceptable oscillator operation. The user should test
the performance of the oscillator over the expected
V
Refer to the Microchip application notes cited in
Table 3-2
the
information.
DD
Note 1: See
Note 1: Higher capacitance increases the stability
HS
and temperature range for the application.
notes
C1
C2
2: A series resistor (R
3: R
2: Since each resonator/crystal has its own
3: Rs may be required to avoid overdriving
4: Always verify oscillator performance over
(1)
(1)
for oscillator-specific information. Also see
C1 and C2.
strip cut crystals.
of the oscillator but also increases the
start-up time.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate
components.
crystals with a low drive level specification.
the V
expected for the application.
F
following
XTAL
varies with the oscillator mode chosen.
Crystal
20 MHz
4 MHz
8 MHz
Table 3-2
Freq.
R
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
DD
S
2009-2011 Microchip Technology Inc.
(2)
OSC1
OSC2
and temperature range that is
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS OR HSPLL
CONFIGURATION)
and
this
Typical Capacitor Values
Table 3-3
values
S
27 pF
22 pF
15 pF
) may be required for AT
R
C1
table
F
PIC18F87K22
(3)
Tested:
for initial values of
for
of
Sleep
additional
27 pF
22 pF
15 pF
external
To
Internal
Logic
C2
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