Data Sheet

988
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
Table 36-59. SPI Timing Characteristics and Requirements
(1)
Notes: 1. These values are based on simulation. These values are not covered by test limits in production.
2. See “I/O Pin Characteristics” on page 950
Symbol Parameter Conditions Min. Typ. Max. Units
t
SCK
SCK period Master 84
ns
t
SCKW
SCK high/low width Master - 0.5*t
SCK
-
t
SCKR
SCK rise time
(2)
Master - - -
t
SCKF
SCK fall time
(2)
Master - - -
t
MIS
MISO setup to SCK Master - 21 -
t
MIH
MISO hold after SCK Master - 13 -
t
MOS
MOSI setup SCK Master - t
SCK
/2 - 3 -
t
MOH
MOSI hold after SCK Master - 3 -
t
SSCK
Slave SCK Period Slave 1*t
CLK_APB
- -
t
SSCKW
SCK high/low width Slave 0.5*t
SSCK
- -
t
SSCKR
SCK rise time
(2)
Slave - - -
t
SSCKF
SCK fall time
(2)
Slave - - -
t
SIS
MOSI setup to SCK Slave t
SSCK
/2 - 9 - -
t
SIH
MOSI hold after SCK Slave t
SSCK
/2 - 3 - -
t
SSS
SS setup to SCK Slave
PRELOADEN=1
2*t
CLK_APB
+ t
SOS
- -
PRELOADEN=0 t
SOS
+7 - -
t
SSH
SS hold after SCK Slave t
SIH
- 4 - -
t
SOS
MISO setup SCK Slave - t
SSCK
/2 - 18 -
t
SOH
MISO hold after SCK Slave - 18 -
t
SOSS
MISO setup after SS low Slave - 18 -
t
SOSH
MISO hold after SS high Slave - 10 -