at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 790

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

41.11.6
Table 41-46. In Full Speed
790
Symbol
t
t
t
FR
FE
FRFM
AT91SAM9G20 Preliminary
UDP
Parameter
Transition Rise Time
Transition Fall Time
Rise/Fall time Matching
Figure 41-23. USB Data Signal Rise and Fall Times
Differential
Data Lines
V
CRS
Fosc = 6 MHz/750 kHz
Conditions
C
C
LOAD
LOAD
10%
= 50 pF
= 50 pF
Rise Time
t
R
Buffer
90%
(a)
(b)
R
EXT
=27 ohms
Min
Fall Time
90
4
4
C
load
t
F
10%
Typ
6384B–ATARM–15-Dec-08
111.11
Max
20
20
Unit
ns
ns
%