49.11 Serial Peripheral Interface (SPI) Timings and Electrical Characteristics

Figure 49-7. SPIx Host Module (CPHA = 0) Timing Diagrams

Figure 49-8. SPIx Host Module (CPHA = 1) Timing Diagrams

Table 49-15. SPIx Module Host Mode Electrical Specifications⁽¹⁾
AC CHARACTERISTICS				Standard Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless otherwise stated) Operating temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature
Param. No.	Symbol	Characteristics⁽¹⁾		Min.	Typ.	Max.	Units	Conditions
MSP_1	FSCK	SCK Frequency	Normal Speed SERCOM	—	—	21	MHz	Transmitter mode, CTRB.RXEN = 0. CLOAD = 30 pF (max)
				—	—	21		Full Duplex Transmit and Receive mode, Loop-Back mode with one SPI talking to another SPI on the same MCU. CLOAD = 30 pF (max)
				—	—	1/(2*(TMIS+NOTE2_TV)) ⁽²⁾		Full Duplex Transmit and Receive mode, CLOAD = 30 pF (max). The maximum SPI speed of the MCU is partially dependent on the external SPI device performance characteristics. Faster speeds than the Loop-Back mode above may therefore be possible using the formula.
			High Speed SERCOM⁽³⁾	—	—	45	MHz	Transmitter mode, CTRB.RXEN = 0, Dut talking to test chip in the same board VDDIOx >= 2.97V, CLOAD = 20 pF (max)
			High Speed SERCOM⁽³⁾	—	—	1/(2*(TMIS_HS+NOTE2_TV)) (2)	MHz	Full Duplex Transmit and Receive mode, CLOAD = 20 pF (max). The maximum SPI speed of the MCU is partially dependent on the external SPI device performance characteristics. Faster speeds than the Loop- Back mode above may therefore be possible using the formula. VDDIOx >= 2.97V.
MSP_11	TMOV	MOSI Data Output Valid after SCK	Normal Speed SERCOM		—	9.56	ns	—
MSP_11	TMOV	MOSI Data Output Valid after SCK	High Speed SERCOM⁽³⁾		—	2.95	ns	VDDIOx >= 2.97V
MSP_13	TMOH	MOSI hold after SCK		0	—	—	ns	—
MSP_15A	TMIS	MISO Setup Time of Data Input to SCK - Normal Speed SERCOM	Normal Speed SERCOM	13.24	—	—	ns	—
MSP_15A	TMIS	MISO Setup Time of Data Input to SCK - Normal Speed SERCOM	High Speed SERCOM ⁽³⁾	1.6	—	—	ns	VDDIOx >= 2.97V
MSP_17	TMIH	MISO Hold Time of Data Input to SCK	Normal Speed SERCOM	0	—	—	ns	—
MSP_17	TMIH	MISO Hold Time of Data Input to SCK	High Speed SERCOM ⁽³⁾	1.21	—	—	ns	VDDIOx >= 2.97V
Note: Assumes 30 pF external load on all SPIx pins unless otherwise noted. NOTE2_TV is the client external device data output valid time from clock edge specification. SERCOM0 pins PC0, PC1, PC2, and PC3.

Figure 49-9. SPIx Client Module (CPHA = 0) Timing Diagrams

Figure 49-10. SPIx Client Module (CPHA = 1) Timing Diagrams

Table 49-16. SPIx Module Client Mode Electrical Specifications
AC CHARACTERISTICS				Standard Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless otherwise stated) Operating temperature: -40°C ≤ TA ≤ +125°C for Extended Temperature
Param. No.	Symbol	Characteristics⁽¹⁾		Min.	Typical	Max.	Units	Conditions
SSP_1A	FSCK	SCK Frequency	Normal Speed SERCOM	—	—	21	MHz	Receiver mode. CLOAD = 30 pF (max)
				—	—	21		Full Duplex Transmit and Receive mode, Loop-Back mode with one SPI talking to another SPI on the same MCU. CLOAD = 30 pF (max)
				—	—	1/(2*(TSOV+NOTE2_TMIS))⁽²⁾		Full Duplex Transmit and Receive mode, CLOAD = 30 pf (max). The maximum SPI speed of the MCU is partially dependent on the external SPI device performance characteristics. Faster speeds than the Loop-Back mode above may therefore be possible using the formula.
			High Speed SERCOM ⁽³⁾	—	—	45	MHz	Receiver mode. DUT talking to test chip in the same board VDDIOx >= 2.97V, CLOAD = 20 pF (max)
			High Speed SERCOM ⁽³⁾	—	—	1/(2*(TSOV_HS+NOTE2_TMIS))⁽²⁾	MHz	Full Duplex Transmit and Receive mode, CLOAD = 20 pF(max). The max SPI speed of the MCU is partially dependent on the external SPI device performance characteristics. Faster speeds than the Loop-Back mode above may therefore be possible using the formula. VDDIOx >= 2.97V
SSP_11A	TSOV	MISO Data Output Valid after SCK	Normal Speed SERCOM	—	—	23.15	ns	—
SSP_11A	TSOV	MISO Data Output Valid after SCK	High Speed SERCOM ⁽³⁾	—	—	10.81	ns	VDDIOx >= 2.97V
SSP_13	TSOH	MISO hold after SCK		4	—	—	ns	—
SSP_15	TSIS	MOSI Setup Time of Data Input to SCK	Normal Speed SERCOM	7.33	—	—	ns	—
SSP_15	TSIS	MOSI Setup Time of Data Input to SCK	High Speed SERCOM ⁽³⁾	2.23	—	—	ns	VDDIOx >= 2.97V
SSP_17	TSIH	MOSI Hold Time of Data Input to SCK	Normal Speed SERCOM	2.28	—	—	ns	—
SSP_17	TSIH	MOSI Hold Time of Data Input to SCK	High Speed SERCOM ⁽³⁾	1.92	—	—	ns	VDDIOx >= 2.97V
SSP_19	TSSS	SS setup to SCK (PRELOADEN = 0)	Normal Speed SERCOM	5.76	—	—	ns	—
SSP_19	TSSS	SS setup to SCK (PRELOADEN = 0)	High Speed SERCOM ⁽³⁾	1.5	—	—	ns	VDDIOx >= 2.97V
SSP_21	TSSH	SS hold after SCK Client	Normal Speed SERCOM	2.01	—	—	ns	—
SSP_21	TSSH	SS hold after SCK Client	High Speed SERCOM⁽³⁾	2.04	—	—	ns	VDDIOx >= 2.97V
Note: Assumes 30 pF external load on all SPIx pins unless otherwise noted. NOTE2_TMIS is the host external device setup time. SERCOM0 pins: PC0, PC1, PC2, and PC3.