Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1436
47.6.3 Switching Characteristics
Figure 47-13. USB Data Signal Rise and Fall Times
Table 47-26. In Full Speed
Symbol Parameter Conditions Min Typ Max Unit
t
r
Transition Rise Time C
LOAD
= 50 pF 4 — 20 ns
t
f
Transition Fall Time C
LOAD
= 50 pF 4 — 20 ns
t
rfm
Rise/Fall time Matching — 90 — 111.11 %
10%
10%
90%
V
CRS
t
r
t
f
Differential
Data Lines
Rise Time Fall Time
f
osc = 6 MHz/750 kHz
R
EXT
=27 ohms
C
LOAD
Buffer
(b)
(a)