Datasheet

144
42023GS–SAM–03/2014
ATSAM4L8/L4/L2
Table 9-59. USART1 in SPI mode Timing, Slave Mode
(1)
Symbol Parameter Conditions Min Max Units
USPI6 SPCK falling to MISO delay
V
VDDIO
from
3.0V to 3.6V,
maximum
external
capacitor =
40pF
373.58
ns
USPI7 MOSI setup time before SPCK rises
4.16 + t
SAMPLE
(2)
+
t
CLK_USART
USPI8 MOSI hold time after SPCK rises
46.69 -( t
SAMPLE
(2)
+
t
CLK_USART )
USPI9 SPCK rising to MISO delay 373.54
USPI10 MOSI setup time before SPCK falls
4.16 +( t
SAMPLE
(2)
+
t
CLK_USART )
USPI11 MOSI hold time after SPCK falls
46.69 -( t
SAMPLE
(2)
+
t
CLK_USART )
USPI12 NSS setup time before SPCK rises 200.43
USPI13 NSS hold time after SPCK falls -16.5
USPI14 NSS setup time before SPCK falls 200.43
USPI15 NSS hold time after SPCK rises -16.5
Table 9-60. USART2 in SPI mode Timing, Slave Mode
(1)
Symbol Parameter Conditions Min Max Units
USPI6 SPCK falling to MISO delay
V
VDDIO
from
3.0V to 3.6V,
maximum
external
capacitor =
40pF
770.02
ns
USPI7 MOSI setup time before SPCK rises
136.56 + t
SAMPLE
(2)
+
t
CLK_USART
USPI8 MOSI hold time after SPCK rises
47.9 -( t
SAMPLE
(2)
+
t
CLK_USART )
USPI9 SPCK rising to MISO delay 570.19
USPI10 MOSI setup time before SPCK falls
136.73 +( t
SAMPLE
(2)
+
t
CLK_USART )
USPI11 MOSI hold time after SPCK falls
47.9 -( t
SAMPLE
(2)
+
t
CLK_USART )
USPI12 NSS setup time before SPCK rises 519.87
USPI13 NSS hold time after SPCK falls -1.83
USPI14 NSS setup time before SPCK falls 519.87
USPI15 NSS hold time after SPCK rises -1.83