SERCOM in SPI Mode Timing

Figure 1. SPI Timing Requirements in Master Mode

Figure 2. SPI Timing Requirements in Slave Mode

Table 1. SPI Timing Characteristics and Requirements⁽¹⁾
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	-	-
t_SSS	SS setup to SCK	Slave	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	-

Notes: 1. These values are based on simulation. These values are not covered by test limits in production.