PIC18F4550-I/P Microchip Technology Inc., PIC18F4550-I/P Datasheet - Page 382
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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
28.4.3
FIGURE 28-5:
TABLE 28-8:
DS39632C-page 380
1A
1
2
3
4
Note 1:
Param.
No.
OSC1
CLKO
F
T
T
TosL,
TosH
TosR,
TosF
Instruction cycle period (T
except PLL. All specified values are based on characterization data for that particular oscillator type under
standard operating conditions with the device executing code. Exceeding these specified limits may result
in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested
to operate at “min.” values with an external clock applied to the OSC1/CLKI pin. When an external clock
input is used, the “max.” cycle time limit is “DC” (no clock) for all devices.
TIMING DIAGRAMS AND SPECIFICATIONS
Symbol
OSC
CY
OSC
EXTERNAL CLOCK TIMING REQUIREMENTS
External CLKI Frequency
Oscillator Frequency
External CLKI Period
Oscillator Period
Instruction Cycle Time
External Clock in (OSC1)
High or Low Time
External Clock in (OSC1)
Rise or Fall Time
EXTERNAL CLOCK TIMING (ALL MODES EXCEPT PLL)
Q4
Characteristic
CY
(1)
Q1
) equals four times the input oscillator time base period for all configurations
1
(1)
(1)
(1)
(1)
Preliminary
1000
Q2
20.8
83.3
Min
DC
0.2
40
40
30
10
—
—
4
4
2
3
5000
Max
250
250
7.5
48
25
25
20
Q3
—
—
—
—
1
3
Units
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
Q4
4
EC, ECIO Oscillator mode
XT, XTPLL Oscillator mode
HS Oscillator mode
HSPLL Oscillator mode
EC, ECIO Oscillator mode
XT Oscillator mode
HS Oscillator mode
HSPLL Oscillator mode
T
XT Oscillator mode
HS Oscillator mode
XT Oscillator mode
HS Oscillator mode
CY
© 2006 Microchip Technology Inc.
= 4/F
4
OSC
Conditions
Q1
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