Datasheet

1071
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
Notes: 1. 1.8V domain: VDDIO from 1.65V to 1.95V, maximum external capacitor = 20pF
2. 3.3V domain: VDDIO from 3.0V to 3.6V, maximum external capacitor = 40pF.
48.15.5 UDP
Figure 48-25. USB Data Signal Rise and Fall Times
SPI
10
MOSI Setup time before SCK falls
1.8v domain
(1)
3.3v domain
(2)
2 * MCK + 2.6
2 * MCK + 2.4
ns
SPI
11
MOSI Hold time after SCK falls
1.8v domain
(1)
3.3v domain
(2)
1.5
1.2
ns
SPI
12
NPCS0 setup to SCK rising
1.8v domain
(1)
3.3v domain
(2)
2.5 * MCK + 1.4
2.5 * MCK + 1.1
ns
SPI
13
NPCS0 hold after SCK falling
1.8v domain
(1)
3.3v domain
(2)
1.5 * MCK + 2.4
1.5 * MCK + 2.1
ns
SPI
14
NPCS0 setup to SCK falling
1.8v domain
(1)
3.3v domain
(2)
2.5 * MCK + 1.1
2.5 * MCK + 1.0
ns
SPI
15
NPCS0 hold after SCK rising
1.8v domain
(1)
3.3v domain
(2)
1.5 * MCK + 1.8
1.5 * MCK + 1.6
ns
Table 48-36. USART SPI Timings (Continued)
Symbol Parameter Conditions Min Max Units
10%
10%
90%
V
CRS
t
R
t
F
Differential
Data Lines
Rise Time Fall Time
Fosc = 6 MHz/750 kHz
R
EXT
=27 ohms
C
load
Buffer
(b)
(a)
Table 48-37. 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 %