PIC18F4550-I/P Microchip Technology Inc., PIC18F4550-I/P Datasheet - Page 44
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PIC18F4550-I/P
Manufacturer Part Number
PIC18F4550-I/P
Description
40 PIN, 32 KB FLASH, 2048 RAM, FS-USB 2.0
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4550-IP.pdf
(430 pages)
Specifications of PIC18F4550-I/P
A/d Inputs
13-Channel, 10-Bit
Comparators
2
Cpu Speed
12 MIPS
Eeprom Memory
256 Bytes
Input Output
34
Interface
I2C/SPI/UART/USART/USB
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
32K Bytes
Ram Size
2K Bytes
Speed
48 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC18F2455/2550/4455/4550
3.5.4
Certain exits from power-managed modes do not
invoke the OST at all. There are two cases:
• PRI_IDLE mode, where the primary clock source
• the primary clock source is not any of the XT or
TABLE 3-2:
DS39632C-page 42
Note 1:
is not stopped; and
HS modes.
Primary Device Clock
T1OSC or INTRC
2:
3:
4:
5:
(PRI_IDLE mode)
Before Wake-up
(Sleep mode)
INTOSC
In this instance, refers specifically to the 31 kHz INTRC clock source.
T
concurrently with any other required delays (see Section 3.4 “Idle Modes”).
Includes both the INTOSC 8 MHz source and postscaler derived frequencies.
T
(parameter F12, Table 28-9); it is also designated as T
Execution continues during T
EXIT WITHOUT AN OSCILLATOR
START-UP DELAY
CSD
OST
None
(parameter 38, Table 28-12) is a required delay when waking from Sleep and all Idle modes and runs
is the Oscillator Start-up Timer period (parameter 32, Table 28-12). t
Microcontroller Clock Source
EXIT DELAY ON WAKE-UP BY RESET FROM SLEEP MODE OR ANY IDLE MODE
(BY CLOCK SOURCES)
(3)
(1)
IOBST
After Wake-up
XTPLL, HSPLL
XTPLL, HSPLL
XTPLL, HSPLL
XTPLL, HSPLL
INTOSC
INTOSC
INTOSC
INTOSC
XT, HS
XT, HS
XT, HS
XT, HS
(parameter 39, Table 28-12), the INTOSC stabilization period.
EC
EC
EC
EC
Preliminary
(3)
(3)
(3)
(3)
In these instances, the primary clock source either
does not require an oscillator start-up delay, since it is
already running (PRI_IDLE), or normally does not
require an oscillator start-up delay (EC and any internal
oscillator modes). However, a fixed delay of interval
T
leaving Sleep and Idle modes to allow the CPU to
prepare for execution. Instruction execution resumes
on the first clock cycle following this delay.
CSD
PLL
.
following the wake event is still required when
T
T
T
Exit Delay
OST
OST
OST
T
T
T
T
T
T
T
T
IOBST (5)
IOBST
None
None
CSD
CSD
CSD (2)
OST (4)
OST (4)
OST (4)
+ t
+ t
+ t
(2)
(2)
rc
rc
rc
(5)
(4)
(4)
(4)
rc
is the PLL lock time-out
© 2006 Microchip Technology Inc.
Clock Ready Status
Bit (OSCCON)
OSTS
OSTS
OSTS
OSTS
IOFS
IOFS
IOFS
IOFS
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