SERCOM in SPI Mode in PL0

Table 1. SPI Timing Characteristics and Requirements (1)
Symbol Parameter Conditions Min. Typ. Max. Units
tSCK SCK period when tSOV=0 on the client side Host Reception 2*(tMIS+tCLIENT_OUT) (3) - - ns
Host Transmission 2*(tMOV+tCLIENT_IN) (4) - -
tSCKW SCK high/low width Host - 0,5*tSCK -
tSCKR SCK rise time(2) Host - 0,25*tSCK -
tSCKF SCK fall time(2) Host - 0,25*tSCK -
tMIS MISO setup to SCK Host, VDD>2,70V 86 - -
Host, VDD>1,62V 95 - -
tMIH MISO hold after SCK Host, VDD>2,70V 0 - -
Host, VDD>1,62V 0 - -
tMOV MOSI output valid after SCK Host, VDD>2,70V - - 33.3 ns
Host, VDD>1,62V - - 49.6
tMOH MOSI hold after SCK Host, VDD>2,70V 9.7 - -
tMOH MOSI hold after SCK Host, VDD>1,62V 9.7 - -
tSSCK Client SCK Period when tMIS=0 on the host side Client Reception 2*(tSIS+tHOST_OUT) (5) - -
Client Transmission 2*(tSOV+tHOST_IN) (6) - -
tSSCKW SCK high/low width Client - 0,5*tSCK -
tSSCKR SCK rise time(2) Client - 0,25*tSCK -
tSSCKF SCK fall time(2) Client - 0,25*tSCK -
tSIS MOSI setup to SCK Client, VDD>2,70V 24.2 - -
Client, VDD>1,62V 24.9 - -
tSIH MOSI hold after SCK Client, VDD>2,70V 12.9 - -
Client, VDD>1,62V 13.5 - -
tSSS SS setup to SCK Client PRELOADEN=1 tSOSS+tEXT_MIS+2*tAPBC (8) (9) - - ns
PRELOADEN=0 tSOSS+tEXT_MIS (8) - -
tSSH SS hold after SCK Client 0.5*tSSCK - -
tSOV MISO output valid after SCK Client, VDD>2,70V - - 66.9
Client, VDD>1,62V - - 76.6
tSOH MISO hold after SCK Client, VDD>2,70V 22.7 - -
Client, VDD>1,62V 20.3 - -
tSOSS MISO setup after SS low Client, VDD>2,70V - - 1* tSCK
Client, VDD>1,62V - - 1* tSCK
tSOSH MISO hold after SS high Client, VDD>2,70V 15 - -
Client, VDD>1,62V 15 - -
Notes:
  1. 1.These values are based on simulation. These values are not covered by test limits in production.
  2. 2.See I/O Pin Characteristics.
  3. 3.Where tCLIENT_OUT is the client external device output response time, generally tEXT_SOV+tLINE_DELAY (See Note 7).
  4. 4.Where tCLIENT_IN is the client external device input constraint, generally tEXT_SIS+tLINE_DELAY (See Note 7).
  5. 5.Where tHOST_OUT is the host external device output response time, generally tEXT_MOV+tLINE_DELAY (See Note 7).
  6. 6.Where tHOST_IN is the host external device input constraint, generally tEXT_MIS+tLINE_DELAY (See Note 7).
  7. 7.tLINE_DELAY is the transmission line time delay.
  8. 8.tEXT_MIS is the input constraint for the host external device.
  9. 9.tAPBC is the APB period for SERCOM.
Figure 1. SPI Timing Requirements in Host Mode
Figure 2. SPI Timing Requirements in Client Mode
Maximum SPI Frequency
Parent topic: Timing Characteristics