PIC18F65K22-I/MRRSL Microchip Technology, PIC18F65K22-I/MRRSL Datasheet - Page 200
![MCU PIC 32K FLASH MEM XLP 64QFN](/photos/19/6/190652/4732178_sml.jpg)
PIC18F65K22-I/MRRSL
Manufacturer Part Number
PIC18F65K22-I/MRRSL
Description
MCU PIC 32K FLASH MEM XLP 64QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC18F65K22T-IPTRSL.pdf
(548 pages)
3.PIC18F65K22T-IPTRSL.pdf
(10 pages)
Specifications of PIC18F65K22-I/MRRSL
Core Size
8-Bit
Program Memory Size
32KB (16K x 16)
Core Processor
PIC
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
53
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 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN, Exposed Pad
Controller Family/series
PIC18
No. Of I/o's
53
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
64MHz
No. Of Timers
8
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
I2C, SPI
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
53
Number Of Timers
8
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 16 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F722-ISS PDF datasheet
- PIC18F65K22T-IPTRSL PDF datasheet #2
- PIC18F65K22T-IPTRSL PDF datasheet #3
- Current page: 200 of 548
- Download datasheet (5Mb)
PIC18F87K22 FAMILY
The Lower Drive Level mode is highly optimized for
extremely low-power consumption. It is not intended to
drive all types of 32.768 kHz crystals. In the Low Drive
Level mode, the crystal oscillator circuit may not work
correctly if excessively large discrete capacitors are
placed on the SOSCO and SOSCI pins. This mode is
designed to work only with discrete capacitances of
approximately 3 pF-10 pF on each pin.
Crystal manufacturers usually specify a CL (Load
Capacitance) rating for their crystals. This value is
related to, but not necessarily the same as, the values
that should be used for C1 and C2 in Figure 14-2.
For more details on selecting the optimum C1 and C2
for a given crystal, see the crystal manufacturer’s appli-
cations information. The optimum value depends in
part on the amount of parasitic capacitance in the
circuit, which is often unknown. For that reason, it is
highly recommended that thorough testing and valida-
tion of the oscillator be performed after values have
been selected.
14.5.1
The SOSC oscillator is also available as a clock source
in power-managed modes. By setting the clock select
bits, SCS<1:0> (OSCCON<1:0>), to ‘01’, the device
switches to SEC_RUN mode and both the CPU and
peripherals are clocked from the SOSC oscillator. If the
IDLEN bit (OSCCON<7>) is cleared and a SLEEP
instruction is executed, the device enters SEC_IDLE
mode. Additional details are available in Section 4.0
“Power-Managed Modes”.
Whenever the SOSC oscillator is providing the clock
source, the SOSC System Clock Status flag,
SOSCRUN (OSCCON2<6>), is set. This can be used
to determine the controller’s current clocking mode. It
can also indicate the clock source currently being used
by the Fail-Safe Clock Monitor.
If the Clock Monitor is enabled and the SOSC oscillator
fails while providing the clock, polling the SOCSRUN
bit will indicate whether the clock is being provided by
the SOSC oscillator or another source.
14.5.2
The SOSC oscillator circuit draws very little power
during operation. Due to the low-power nature of the
oscillator, it may also be sensitive to rapidly changing
signals in close proximity. This is especially true when
the oscillator is configured for extremely low-power
mode, SOSCSEL<1:0> (CONFIG1L<4:3>) = 01.
The oscillator circuit, displayed in Figure 14-2, should
be located as close as possible to the microcontroller.
There should be no circuits passing within the oscillator
circuit boundaries other than V
DS39960B-page 200
USING SOSC AS A
CLOCK SOURCE
SOSC OSCILLATOR LAYOUT
CONSIDERATIONS
SS
or V
DD
.
Preliminary
digital output, it may be necessary to use the Higher
If a high-speed circuit must be located near the
oscillator, it may help to have a grounded guard ring
around the oscillator circuit. The guard, as displayed in
Figure 14-3, could be used on a single-sided PCB or in
addition to a ground plane. (Examples of a high-speed
circuit include the ECCP1 pin, in Output Compare or
PWM mode, or the primary oscillator, using the OSC2
pin.)
FIGURE 14-3:
In the Low Drive Level mode, SOSCSEL<1:0> = 01, it is
critical that RC2 I/O pin signals be kept away from the
oscillator circuit. Configuring RC2 as a digital output, and
toggling it, can potentially disturb the oscillator circuit,
even with a relatively good PCB layout. If possible, either
leave RC2 unused or use it as an input pin with a slew
rate limited signal source. If RC2 must be used as a
Drive Level Oscillator mode (SOSCSEL<1:0> = 11) with
many PCB layouts.
Even in the Higher Drive Level mode, careful layout
procedures should still be followed when designing the
oscillator circuit.
In addition to dV/dt induced noise considerations, it is
important to ensure that the circuit board is clean. Even
a very small amount of conductive soldering flux
residue can cause PCB leakage currents that can
overwhelm the oscillator circuit.
14.6
The TMR1 register pair (TMR1H:TMR1L) increments
from 0000h to FFFFh and rolls over to 0000h. The
Timer1 interrupt, if enabled, is generated on overflow
which is latched in interrupt flag bit, TMR1IF
(PIR1<0>). This interrupt can be enabled or disabled
by setting or clearing the Timer1 Interrupt Enable bit,
TMR1IE (PIE1<0>).
Note: Not drawn to scale.
Timer1 Interrupt
OSCILLATOR CIRCUIT
WITH GROUNDED
GUARD RING
2010 Microchip Technology Inc.
OSC1
RC0
V
V
OSC2
RC1
RC2
DD
SS
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