PIC18F2450 MICROCHIP [Microchip Technology], PIC18F2450 Datasheet - Page 292

• Manufacturer Part Number: PIC18F2450
• Description: 28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2450/4450
FIGURE 21-13:
TABLE 21-15: USB LOW-SPEED TIMING REQUIREMENTS
TABLE 21-16: USB FULL-SPEED REQUIREMENTS
DS39760A-page 290
Param
Param
No.
No.
T
T
T
T
T
T
Symbol
Symbol
LR
LF
LRFM
FR
FF
FRFM
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
USB SIGNAL TIMING
90%
10%
V
CRS
Characteristic
Characteristic
Advance Information
USB Data Differential Lines
T
LR
, T
FR
Min
Min
75
75
80
90
4
4
Typ
Typ
—
—
—
—
—
—
111.1
T
Max
Max
300
300
125
20
20
LF
, T
FF
© 2006 Microchip Technology Inc.
Units
Units
ns
ns
ns
ns
%
%
C
C
C
C
L
L
L
L
= 200 to 600 pF
= 200 to 600 pF
= 50 pF
= 50 pF
Conditions
Conditions