PIC18F27J53T-I/SO Microchip Technology, PIC18F27J53T-I/SO Datasheet - Page 37

• Manufacturer Part Number: PIC18F27J53T-I/SO
• Description: 28-pin, USB, 128KB Flash, 4KB RAM, 12 MIPS, 12-bit ADC, NanoWatt XLP 28 SOIC .30
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F27J53T-I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2.15 V ~ 3.6 V
• Data Converters: A/D 10x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3.8 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 8
• Operating Supply Voltage: 2.15 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

3.2.2
In HS and HSPLL Oscillator modes, a crystal or
ceramic resonator is connected to the OSC1 and
OSC2 pins to establish oscillation. Figure 3-2 displays
the pin connections.
The oscillator design requires the use of a parallel
resonant crystal.
FIGURE 3-2:
TABLE 3-2:
 2010 Microchip Technology Inc.
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 3-3 for additional
information.
Note 1:
Note:
DD
Mode
HS
and temperature range for the application.
C1
C2
2:
(1)
(1)
Typical Capacitor Values Used:
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
Use of a series resonant crystal may give
a
manufacturer’s specifications.
See Table 3-2 and Table 3-3 for initial values
of C1 and C2.
R
crystals with low drive level specifications.
16.0 MHz
XTAL
R
S
8.0 MHz
S
may be required to avoid overdriving
Freq
frequency
(2)
Resonators Used:
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
OSC2
OSC1
16.0 MHz
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS OR HSPLL
CONFIGURATION)
4.0 MHz
8.0 MHz
out
OSC1
27 pF
22 pF
PIC18F47J53
of
Sleep
the
OSC2
27 pF
22 pF
To
Internal
Logic
crystal
Preliminary
PIC18F47J53 FAMILY
TABLE 3-3:
An internal postscaler allows users to select a clock
frequency other than that of the crystal or resonator.
Frequency division is determined by the CPDIV
Configuration bits. Users may select a clock frequency
of the oscillator frequency, or 1/2, 1/3 or 1/6 of the
frequency.
Capacitor values are for design guidance only.
These capacitors were tested with the crystals 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 this table for additional
information.
Osc Type
DD
Note 1: Higher capacitance not only increases
HS
and temperature range for the application.
2: Since each resonator/crystal has its own
3: Rs may be required to avoid overdriving
4: Always verify oscillator performance over
the stability of oscillator, but also
increases the start-up time.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate
components.
crystals with low drive level specification.
the V
expected for the application.
16 MHz
Crystal
4 MHz
8 MHz
Freq
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
DD
Crystals Used:
and temperature range that is
16 MHz
4 MHz
8 MHz
Typical Capacitor Values
values
27 pF
22 pF
18 pF
C1
Tested:
DS39964B-page 37
of
27 pF
22 pF
18 pF
external
C2