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PIC18F4550ESOSQTP Datasheet(PDF) 397 Page - Microchip Technology

Part # PIC18F4550ESOSQTP
Description  28/40/44-Pin, High-Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology
PDF  430 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F4550ESOSQTP Datasheet(HTML) 397 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS39632D-page 395
PIC18F2455/2550/4455/4550
FIGURE 28-21:
USB SIGNAL TIMING
TABLE 28-25: USB LOW-SPEED TIMING REQUIREMENTS
TABLE 28-26: USB FULL-SPEED REQUIREMENTS
VCRS
USB Data Differential Lines
90%
10%
TLR, TFR
TLF, TFF
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
TLR
Transition Rise Time
75
—
300
ns
CL = 200 to 600 pF
TLF
Transition Fall Time
75
—
300
ns
CL = 200 to 600 pF
TLRFM
Rise/Fall Time Matching
80
—
125
%
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
TFR
Transition Rise Time
4
—
20
ns
CL = 50 pF
TFF
Transition Fall Time
4
—
20
ns
CL = 50 pF
TFRFM
Rise/Fall Time Matching
90
—
111.1
%



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