48.9.2 SERCOM in SPI Mode in PL2

Table 48-32. 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
tSCK	SCK period when tSOV=0 on the client side	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		43.8	-	-
tMIS	MISO setup to SCK	Host, VDD>1.8V		54.1	-	-
tMIH	MISO hold after SCK	Host, VDD>2.70V		0	-	-	ns
tMIH	MISO hold after SCK	Host, VDD>1.8V		0	-	-
tMOV	MOSI output valid after SCK	Host, VDD>2.70V		-	-	17.5
tMOV	MOSI output valid after SCK	Host, VDD>1.8V		-	-	21.2
tMOH	MOSI hold after SCK	Host, VDD>2.70V		6.32	-	-
tMOH	MOSI hold after SCK	Host, VDD>1.8V		6.32	-	-
tSSCK	Client SCK Period when tMIS=0 on the host side	Client	Reception	2*(tSIS+tHOST_OUT) ⁽⁵⁾	-	-
tSSCK	Client SCK Period when tMIS=0 on the host side	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		10.7	-	-	ns
tSIS	MOSI setup to SCK	Client, VDD>1.8V		11.4	-	-
tSIH	MOSI hold after SCK	Client, VDD>2.70V		6.4	-	-
tSIH	MOSI hold after SCK	Client, VDD>1.8V		7.1	-	-
tSSS	SS setup to SCK	Client	PRELOADEN=1	tSOSS+tEXT_MIS+2*tAPBC ^{(8) (9)}	-	-
tSSS	SS setup to SCK	Client	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		-	-	36.1
tSOV	MISO output valid after SCK	Client, VDD>1.8V		-	-	46.4
tSOH	MISO hold after SCK	Client, VDD>2.70V		13.4	-	-
tSOH	MISO hold after SCK	Client, VDD>1.8V		13.4	-	-
tSOSS	MISO setup after SS low	Client, VDD>2.70V			-	1* tSCK
tSOSS	MISO setup after SS low	Client, VDD>1.8V			-	1* tSCK
tSOSH	MISO hold after SS high	Client, VDD>2.70V		8.7	-	-
tSOSH	MISO hold after SS high	Client, VDD>1.8V		8.7	-	-

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 (See Note 7).
Where tCLIENT_IN is the client external device input constraint, generally tEXT_SIS+tLINE_DELAY (See Note 7).
Where tHOST_OUT is the host external device output response time, generally tEXT_MOV+tLINE_DELAY (See Note 7).
Where tHOST_IN is the host external device input constraint, generally tEXT_MIS+tLINE_DELAY (See Note 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.

Figure 48-4. SPI Timing Requirements in Host Mode

Figure 48-5. SPI Timing Requirements in Client Mode

Maximum SPI Frequency

Host Mode
f_SCKmax = 1/2*(t_MIS + t_{CLIENT_OUT})
Client Mode
f_SCKmax = 1/2*(t_SOV + t_{HOST_IN})