PIC18LF2410-I/SO Microchip Technology, PIC18LF2410-I/SO Datasheet - Page 45
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PIC18LF2410-I/SO
Manufacturer Part Number
PIC18LF2410-I/SO
Description
IC MCU FLASH 8KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18LF2410-ISO.pdf
(376 pages)
2.PIC18LF2410-ISO.pdf
(8 pages)
3.PIC18LF2410-ISO.pdf
(16 pages)
4.PIC18LF2410-ISO.pdf
(6 pages)
5.PIC18LF2410-ISO.pdf
(6 pages)
6.PIC18LF2410-ISO.pdf
(8 pages)
Specifications of PIC18LF2410-I/SO
Core Size
8-Bit
Program Memory Size
16KB (8K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Controller Family/series
PIC18
No. Of I/o's
25
Ram Memory Size
768Byte
Cpu Speed
40MHz
No. Of Timers
4
Interface
I2C, SPI, USART
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF2410-I/SO
Manufacturer:
TOSHIBA
Quantity:
3 000
- PIC18LF2410-ISO PDF datasheet
- PIC18LF2410-ISO PDF datasheet #2
- PIC18LF2410-ISO PDF datasheet #3
- PIC18LF2410-ISO PDF datasheet #4
- PIC18LF2410-ISO PDF datasheet #5
- PIC18LF2410-ISO PDF datasheet #6
- Current page: 45 of 376
- Download datasheet (7Mb)
4.5
PIC18F2X1X/4X1X devices incorporate three separate
on-chip timers that help regulate the Power-on Reset
process. Their main function is to ensure that the
device clock is stable before code is executed. These
timers are:
• Power-up Timer (PWRT)
• Oscillator Start-up Timer (OST)
• PLL Lock Time-out
4.5.1
The Power-up Timer (PWRT) of PIC18F2X1X/4X1X
devices is an 11-bit counter which uses the INTRC
source as the clock input. This yields an approximate
time interval of 2048 x 32 μs = 65.6 ms. While the
PWRT is counting, the device is held in Reset.
The power-up time delay depends on the INTRC clock
and will vary from chip to chip due to temperature and
process variation. See DC parameter 33 for details.
The PWRT is enabled by clearing the PWRTEN
Configuration bit.
4.5.2
The Oscillator Start-up Timer (OST) provides a 1024
oscillator cycle (from OSC1 input) delay after the
PWRT delay is over (parameter 33). This ensures that
the crystal oscillator or resonator has started and
stabilized.
The OST time-out is invoked only for XT, LP, HS and
HSPLL modes and only on Power-on Reset, or on exit
from most power-managed modes.
TABLE 4-2:
© 2009 Microchip Technology Inc.
HSPLL
HS, XT, LP
EC, ECIO
RC, RCIO
INTIO1, INTIO2
Note 1: 66 ms (65.5 ms) is the nominal Power-up Timer (PWRT) delay.
Configuration
2: 2 ms is the nominal time required for the PLL to lock.
Oscillator
Device Reset Timers
POWER-UP TIMER (PWRT)
OSCILLATOR START-UP TIMER
(OST)
TIME-OUT IN VARIOUS SITUATIONS
66 ms
66 ms
(1)
PWRTEN = 0
+ 1024 T
(1)
66 ms
66 ms
66 ms
+ 1024 T
Power-up
OSC
(1)
(1)
(1)
+ 2 ms
OSC
(2)
(2)
and Brown-out
4.5.3
With the PLL enabled in its PLL mode, the time-out
sequence following a Power-on Reset is slightly differ-
ent from other oscillator modes. A separate timer is
used to provide a fixed time-out that is sufficient for the
PLL to lock to the main oscillator frequency. This PLL
lock time-out (T
oscillator start-up time-out.
4.5.4
On power-up, the time-out sequence is as follows:
1.
2.
The total time-out will vary based on oscillator configu-
ration and the status of the PWRT. Figure 4-3,
Figure 4-4, Figure 4-5, Figure 4-6 and Figure 4-7 all
depict time-out sequences on power-up, with the
Power-up Timer enabled and the device operating in
HS Oscillator mode. Figures 4-3 through 4-6 also
apply to devices operating in XT or LP modes. For
devices in RC mode and with the PWRT disabled, there
will be no time-out at all.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, all time-outs will expire. Bring-
ing MCLR high will begin execution immediately
(Figure 4-5). This is useful for testing purposes or to
synchronize more than one PIC18FXXXX device
operating in parallel.
1024 T
PWRTEN = 1
After the POR pulse has cleared, PWRT time-out
is invoked (if enabled).
Then, the OST is activated.
1024 T
PIC18F2X1X/4X1X
OSC
—
—
—
PLL LOCK TIME-OUT
TIME-OUT SEQUENCE
+ 2 ms
OSC
PLL
(2)
) is typically 2 ms and follows the
Power-Managed Mode
1024 T
1024 T
Exit From
DS39636D-page 47
OSC
—
—
—
+ 2 ms
OSC
(2)
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