PIC18LF8722-I/PT Microchip Technology, PIC18LF8722-I/PT Datasheet - Page 316
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PIC18LF8722-I/PT
Manufacturer Part Number
PIC18LF8722-I/PT
Description
IC PIC MCU FLASH 64KX16 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.DV164136.pdf
(6 pages)
3.DV164136.pdf
(446 pages)
4.PIC18LF6627-IPT.pdf
(16 pages)
Specifications of PIC18LF8722-I/PT
Program Memory Type
FLASH
Program Memory Size
128KB (64K x 16)
Package / Case
80-TFQFP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
70
Eeprom Size
1K x 8
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3936 B
Interface Type
SPI/I2C/EUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
70
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM183032, DM183022, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
16-ch x 10-bit
Package
80TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
40 MHz
Operating Supply Voltage
2.5|3.3|5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF8722-I/PT
Manufacturer:
EPCOS
Quantity:
30 000
Company:
Part Number:
PIC18LF8722-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- DV164136 PDF datasheet #2
- DV164136 PDF datasheet #3
- PIC18LF6627-IPT PDF datasheet #4
- Current page: 316 of 446
- Download datasheet (7Mb)
PIC18F8722 FAMILY
25.3
The Two-Speed Start-up feature helps to minimize the
latency period from oscillator start-up to code execution
by allowing the microcontroller to use the INTOSC
oscillator as a clock source until the primary clock
source is available. It is enabled by setting the IESO
Configuration bit.
Two-Speed Start-up should be enabled only if the
primary oscillator mode is LP, XT, HS or HSPLL
(crystal-based modes). Other sources do not require
an OST start-up delay; for these, Two-Speed Start-up
should be disabled.
When enabled, Resets and wake-ups from Sleep mode
cause the device to configure itself to run from the
internal oscillator block as the clock source, following
the time-out of the Power-up Timer after a Power-on
Reset is enabled. This allows almost immediate code
execution while the primary oscillator starts and the
OST is running. Once the OST times out, the device
automatically switches to PRI_RUN mode.
To use a higher clock speed on wake-up, the INTOSC
or postscaler clock sources can be selected to provide
a higher clock speed by setting bits IRCF<2:0>
immediately after Reset. For wake-ups from Sleep, the
INTOSC or postscaler clock sources can be selected
by setting the IRCF2:0> bits prior to entering Sleep
mode.
FIGURE 25-2:
DS39646C-page 314
Two-Speed Start-up
Note 1: T
Multiplexor
CPU Clock
PLL Clock
Peripheral
Program
INTOSC
Counter
Output
OSC1
Clock
2: Clock transition typically occurs within 2-4 T
Wake from Interrupt Event
TIMING TRANSITION FOR TWO-SPEED START-UP (INTOSC TO HSPLL)
OST
PC
= 1024 T
Q1
OSC
T
OST
; T
(1)
PLL
Q2
PC + 2
= 2 ms (approx). These intervals are not shown to scale.
T
PLL
OSTS bit Set
Q3
(1)
Q4
OSC
In all other power-managed modes, Two-Speed Start-
up is not used. The device will be clocked by the
currently selected clock source until the primary clock
source becomes available. The setting of the IESO bit
is ignored.
25.3.1
While using the INTOSC oscillator in Two-Speed Start-
up, the device still obeys the normal command
sequences
including
Section 3.1.4 “Multiple Sleep Commands”). In
practice, this means that user code can change the
SCS<1:0> bit settings or issue SLEEP instructions
before the OST times out. This would allow an
application
“housekeeping” tasks and return to Sleep before the
device starts to operate from the primary oscillator.
User code can also check if the primary clock source is
currently providing the device clocking by checking the
status of the OSTS bit (OSCCON<3>). If the bit is set,
the primary oscillator is providing the clock. Otherwise,
the internal oscillator block is providing the clock during
wake-up from Reset or Sleep mode.
Q1
1
.
Transition
2
Clock
n-1 n
(2)
multiple
SPECIAL CONSIDERATIONS FOR
USING TWO-SPEED START-UP
PC + 4
for
to
briefly
entering
Q2
SLEEP
Q3 Q4
© 2008 Microchip Technology Inc.
wake-up,
power-managed
instructions
Q1
PC + 6
Q2
perform
Q3
(refer
modes,
routine
to
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