PIC18LF6310T-I/PT Microchip Technology, PIC18LF6310T-I/PT Datasheet - Page 46
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PIC18LF6310T-I/PT
Manufacturer Part Number
PIC18LF6310T-I/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Specifications of PIC18LF6310T-I/PT
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF6310T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC18F6310/6410/8310/8410
4.1.3
The length of the transition between clock sources is
the sum of two cycles of the old clock source and three
to four cycles of the new clock source. This formula
assumes that the new clock source is stable.
Three bits indicate the current clock source and its
status. They are:
• OSTS (OSCCON<3>)
• IOFS (OSCCON<2>)
• T1RUN (T1CON<6>)
In general, only one of these bits will be set while in a
given power-managed mode. When the OSTS bit is
set, the primary clock is providing the device clock.
When the IOFS bit is set, the INTOSC output is provid-
ing a stable, 8 MHz clock source to a divider that
actually drives the device clock. When the T1RUN bit is
set, the Timer1 oscillator is providing the clock. If none
of these bits are set, then either the INTRC clock
source is clocking the device or the INTOSC source is
not yet stable.
If the internal oscillator block is configured as the primary
clock source by the FOSC<3:0> Configuration bits, then
both the OSTS and IOFS bits may be set when in
PRI_RUN or PRI_IDLE modes. This indicates that the
primary clock (INTOSC output) is generating a stable
8 MHz output. Entering another power-managed RC
mode at the same frequency would clear the OSTS bit.
4.1.4
The power-managed mode that is invoked with the
SLEEP instruction is determined by the setting of the
IDLEN bit at the time the instruction is executed. If
another SLEEP instruction is executed, the device will
enter the power-managed mode specified by IDLEN at
that time. If IDLEN has changed, the device will enter
the new power-managed mode specified by the new
setting.
DS39635C-page 46
Note 1: Caution should be used when modifying
2: Executing a SLEEP instruction does not
CLOCK TRANSITIONS AND
STATUS INDICATORS
MULTIPLE SLEEP COMMANDS
a single IRCF bit. If V
is possible to select a higher clock speed
than is supported by the low V
Improper device operation may result if
the V
necessarily place the device into Sleep
mode. It acts as the trigger to place the
controller into either the Sleep mode or
one of the Idle modes, depending on the
setting of the IDLEN bit.
DD
/F
OSC
specifications are violated.
DD
is less than 3V, it
DD
.
Upon resuming normal operation, after waking from
Sleep or Idle, the internal state machines require at
least one T
can be executed. If two back to back SLEEP instruc-
tions will be executed, the process shown in
Example 4-1
EXAMPLE 4-1:
4.2
In the Run modes, clocks to both the core and
peripherals are active. The difference between these
modes is the clock source.
4.2.1
The PRI_RUN mode is the normal full-power execution
mode of the microcontroller. This is also the default
mode upon a device Reset unless Two-Speed Start-up
is enabled (see Section 24.3 “Two-Speed Start-up”
for details). In this mode, the OSTS bit is set. The IOFS
bit may be set if the internal oscillator block is the
primary clock source (see
Control
4.2.2
The SEC_RUN mode is the compatible mode to the
“clock switching” feature offered in other PIC18
devices. In this mode, the CPU and peripherals are
clocked from the Timer1 oscillator. This gives users the
option of lower power consumption while still using a
high-accuracy clock source.
SEC_RUN mode is entered by setting the SCS<1:0>
bits to ‘01’. The device clock source is switched to the
Timer1 oscillator (see
oscillator is shut down, the T1RUN bit (T1CON<6>) is
set and the OSTS bit is cleared.
SLEEP
NOP ;Wait at least 1 Tcy before
SLEEP
Note:
executing another sleep instruction
Register”).
Run Modes
CY
PRI_RUN MODE
SEC_RUN MODE
The Timer1 oscillator should already be
running prior to entering SEC_RUN
mode. If the T1OSCEN bit is not set when
the SCS<1:0> bits are set to ‘01’, entry to
SEC_RUN mode will not occur. If the
Timer1 oscillator is enabled, but not yet
running, peripheral clocks will be delayed
until the oscillator has started; in such
situations, initial oscillator operation is far
from stable and unpredictable operation
may result.
should be used:
delay before another SLEEP instruction
EXECUTING BACK TO
BACK SLEEP
INSTRUCTIONS
2010 Microchip Technology Inc.
Figure
Section 3.7.1 “Oscillator
4-1), the primary
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