35.14 SPI

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

Table 35-19. SPI - Timing Characteristics in Host Mode
Symbol	Description	Min.	Typ.	Max.	Unit
f_SCK ⁽¹⁾	SCK clock frequency	—	—	f_{CLK_PER}/2	MHz
T_SCK ⁽¹⁾	SCK period	2×T_{CLK_PER}	—	—	ns
t_SCKW	SCK high/low width	—	0.5×T_SCK	—	ns
t_MOS	MOSI valid before SCK	—	0.5×T_SCK	—	ns
t_MOH	MOSI hold after SCK	—	0.5×T_SCK	—	ns
t_MIS	MISO setup to SCK	—	T_SCK	—	ns
t_MIH	MISO hold after SCK	—	0	—	ns
These parameters are characterized but not tested in production.

Figure 35-6. SPI - Timing Requirements in Client Mode

Table 35-20. SPI - Timing Characteristics in Client Mode
Symbol	Description	Min.	Typ.	Max.	Unit	Condition
f_SSCK ⁽¹⁾	Client SCK clock frequency	—	—	f_{CLK_PER}/6	MHz
T_SSCK ⁽¹⁾	Client SCK period	6×T_{CLK_PER}	—	—	ns
t_SSCKW ⁽¹⁾	SCK high/low width	3×T_{CLK_PER}	—	—	ns
t_SIS ⁽¹⁾	MOSI setup to SCK	0	—	—	ns
t_SIH ⁽¹⁾	MOSI hold after SCK	3×T_{CLK_PER}	—	—	ns
t_SSS ⁽¹⁾	SS low before SCK	T_{CLK_PER}	—	—	ns
t_SSH ⁽¹⁾	SS high after SCK	T_{CLK_PER}	—	—	ns
t_SOS	MISO valid after SCK	—	t_SR ⁽²⁾	—	ns	f_SSCK≥f_{CLK_PER}/6
t_SOS	MISO valid after SCK	—	—	—	ns	f_SSCK<f_{CLK_PER}/6
t_SOSS	MISO setup after SS low	—	t_SR ⁽²⁾	—	ns
t_SOSH	MISO hold after SS low	—	t_SR ⁽²⁾	—	ns
These parameters are characterized but not tested in production. t_SR is the I/O pin rise time.