Datasheet

1130
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
44.7.3 Switching Characteristics
Figure 44-13. USB Data Signal Rise and Fall Times
Table 44-34. In Full Speed
Symbol Parameter Conditions Min Typ Max Unit
t
FR
Transition Rise Time C
LOAD
= 50 pF 4 — 20 ns
t
FE
Transition Fall Time C
LOAD
= 50 pF 4 — 20 ns
t
FRFM
Rise/Fall Time Matching 90 — 111.11 %
10%
10%
90%
V
CRS
t
R
t
F
Differential
Data Lines
Rise Time Fall Time
Fosc = 6MHz/750kHz
R
EXT
=27 ohms
C
load
Buffer
(b)
(a)