35.14 SPI

Figure 35-4. SPI - Timing Requirements in Host Mode

Table 35-19. SPI - Timing Specifications in Host Mode
Symbol	Description	Min.	Typ.✝	Max.	Unit
f_SCK *	SCK clock frequency	—	—	f_{CLK_PER} / 2	MHz
T_SCK *	SCK period	2 × T_{CLK_PER}	—	—	ns
t_SCKW	SCK high/low width	—	0.5 × T_SCK	—	ns
t_SCKR	SCK rise time	—	2.7	—	ns
t_SCKF	SCK fall time	—	2.7	—	ns
t_MIS	MISO setup to SCK	—	10	—	ns
t_MIH	MISO hold after SCK	—	10	—	ns
t_MOS	MOSI setup to SCK	—	0.5 × T_SCK	—	ns
t_MOH	MOSI hold after SCK	—	1.0	—	ns
✝ Data found in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V unless otherwise specified. These parameters are not tested and are for design guidance only. * These parameters are characterized but not tested in production.

Figure 35-5. SPI - Timing Requirements in Client Mode

Table 35-20. SPI - Timing Specifications in Client Mode
Symbol	Description	Min.	Typ.✝	Max.	Unit
f_SSCK *	Client SCK clock frequency	—	—	f_{CLK_PER} / 4	MHz
T_SSCK *	Client SCK period	4 × T_{CLK_PER}	—	—	ns
t_SSCKW *	SCK high/low width	2 × T_{CLK_PER}	—	—	ns
t_SSCKR *	SCK rise time	—	—	1600	ns
t_SSCKF *	SCK fall time	—	—	1600	ns
t_SIS *	MOSI setup to SCK	3.0	—	—	ns
t_SIH *	MOSI hold after SCK	T_{CLK_PER}	—	—	ns
t_SSS *	SS setup to SCK	21	—	—	ns
t_SSH *	SS hold after SCK	20	—	—	ns
t_SOS	MISO setup to SCK	—	8.0	—	ns
t_SOH	MISO hold after SCK	—	13	—	ns
t_SOSS	MISO setup after SS low	—	11	—	ns
t_SOSH	MISO hold after SS low	—	8.0	—	ns
✝ Data found in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V unless otherwise specified. These parameters are not tested and are for design guidance only. * These parameters are characterized but not tested in production.