46.14.2 SERCOM in SPI Mode in PL0
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 | 90 | - | - | ||
Host, VDD>1,62V | 98.1 | - | - | ||||
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 | - | - | 34.5 | ns | |
Host, VDD>1,62V | - | - | 38.6 | ||||
tMOH | MOSI hold after SCK | Host, VDD>2,70V | 9.7 | - | - | ||
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 | 25.6 | - | - | ns | |
Client, VDD>1,62V | 26.2 | - | - | ||||
tSIH | MOSI hold after SCK | Client, VDD>2,70V | 13.2 | - | - | ||
Client, VDD>1,62V | 13.9 | - | - | ||||
tSSS | SS setup to SCK | Client | PRELOADEN=1 | tSOSS+tEXT_MIS+2*tAPBC (8) (9) | - | - | |
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 | - | - | 69 | ||
Client, VDD>1,62V | - | - | 78.4 | ||||
tSOH | MISO hold after SCK | Client, VDD>2,70V | 20.2 | - | - | ||
Client, VDD>1,62V | 20.2 | - | - | ||||
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 | - | - |
Note:
- These values are based on simulation. These values are not covered by test limits in production.
- See I/O Pin Characteristics.
- Where tCLIENT_OUT is the client external device output response time, generally tEXT_SOV+tLINE_DELAY. (7)
- Where tCLIENT_IN is the client external device input constraint, generally tEXT_SIS+tLINE_DELAY. (7)
- Where tHOST_OUT is the host external device output response time, generally tEXT_MOV+tLINE_DELAY. (7)
- Where tHOST_IN is the host external device input constraint, generally tEXT_MIS+tLINE_DELAY. (7)
- tLINE_DELAY is the transmission line time delay.
- tEXT_MIS is the input constraint for the host external device.
- tAPBC is the APB period for SERCOM.
Maximum SPI Frequency
- Host Mode
fSCKmax = 1/2*(tMIS + tCLIENT_OUT)
- Client Mode
fSCKmax = 1/2*(tSOV + tHOST_IN)