46.21 SERCOM SPIx Mode Electrical Specifications

Figure 46-7. SPIx Host Module CPHA = 0 Timing Diagrams

Figure 46-8. SPIx Host Module CPHA = 1 Timing Diagrams

Table 46-27. SERCOM SPIx Module Host Mode Electrical Specifications
AC CHARACTERISTICS			Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated) Operating temperature -40°C ≤ T_A ≤ +85°C for Industrial
Param. No.	Symbol	Characteristics⁽¹⁾	Min.	Typ.	Max.	Units	Conditions
MSP_1	FSCK	SCK Frequency	—	—	14.56	MHz	Transmitter mode, CTRLB.RXEN=0, C_LOAD=30pF(MAX)
			—	—	3.41		Full Duplex Transmit and Receive mode, C_LOAD=30pF(MAX) Loop Back mode with one SPI talking to another SPI on the same MCU.
			—	—	1/(2*(TMIS+NOTE2_TV)) ⁽²⁾		Full Duplex Transmit and Receive mode, C_LOAD=30pF(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.
MSP_3	TSCL	SCK Output Low Time	1/(2*FSCK)	—	—	ns	—
MSP_5	TSCH	SCK Output High Time	1/(2*FSCK)	—	—	ns	—
MSP_7	TSCF	SCK & MOSI Output Fall Time	—	—	DI_27	ns	DI_27: Refer to I/O Pin Electrical Specification
MSP_9	TSCR	SCK & MOSI Output Rise Time	—	—	DI_25	ns	DI_25: Refer to I/O Pin Electrical Specification
MSP_11	TMOV	MOSI Data Output Valid after SCK	—	—	34.33	ns	VDDIO = 2.7V, C_LOAD=30pF(MAX)
MSP_13	TMOH	MOSI hold after SCK	8.72	—	—	ns
MSP_15	TMIS	MISO Setup Time of Data Input to SCK	72.96	—	—	ns
MSP_17	TMIH	MISO Hold Time of Data Input to SCK	12.99	—	—	ns
MSP_19	SPI_GCLK	SERCOM SPI input clk freq, GCLK_SERCOMx_CORE	—	—	FCLK_23	MHz	—

Note:

Assumes VDDIO = 2.7V and 30pF external load on all SPIx pins unless otherwise noted.
NOTE2_TV is the client external device data output valid time from clock edge specification.

Figure 46-9. SPIx Client Module CPHA=0 Timing Diagram

Figure 46-10. SPIx Client Module CPHA=1 Timing Diagram

Table 46-28. SERCOM SPIx Module Client Mode Electrical Specifications
AC CHARACTERISTICS			Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated) Operating temperature -40°C ≤ T_A ≤ +85°C for Industrial
Param. No.	Symbol	Characteristics⁽¹⁾	Min.	Typ.	Max.	Units	Conditions
SSP_1	FSCK	SCK Frequency	—	—	14.56	MHz	Receiver mode, C_LOAD=30pF_(MAX)
			—	—	3.41		Full Duplex Transmit and Receive mode, C_LOAD=30pF_(MAX) Loop Back mode with one SPI talking to another SPI on the same MCU.
			—	—	1/(2*(TSOV+NOTE2_TMIS))⁽²⁾		Full Duplex Transmit and Receive mode, C_LOAD=30pF(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.
SSP_3	TSCL	SCK Output Low Time	1/(2*FSCK)	—	—	ns	—
SSP_5	TSCH	SCK Output High Time	1/(2*FSCK)	—	—	ns	—
SSP_7	TSCF	SCK & MISO Output Fall Time	—	—	DI_27	ns	DI_27: Refer to I/O Pin Electrical Specification
SSP_9	TSCR	SCK & MISO Output Rise Time	—	—	DI_25	ns	DI_25: Refer to I/O Pin Electrical Specification
SSP_11	TSOV	MISO Data Output Valid after SCK	—	—	77.5	ns	VDDIO = 2.7V, C_LOAD=30pF_(MAX)
SSP_13	TSOH	MISO hold after SCK	21.07	—	—	ns
SSP_15	TSIS	MOSI Setup Time of Data Input to SCK	15.67	—	—	ns
SSP_17	TSIH	MOSI Hold Time of Data Input to SCK	10.36	—	—	ns
SSP_19	TSSS	SS setup to SCK (PRELOADEN=1)	2*tck_APB + 27.6	—	—	ns
SSP_19	TSSS	SS setup to SCK (PRELOADEN=0)	27.6	—	—	ns
SSP_21	TSSH	SS hold after SCK Client	8.59	—	—	ns
SSP_23	SPI_GCLK	SERCOM SPI input clk freq, GCLK_SERCOMx_CORE	—	—	FCLK_23	MHz	—

Note:

Assumes VDDIO = 2.7V and 30 pF external load on all SPIx pins unless otherwise noted.
NOTE2_TMIS is the host external device setup time.

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