51.22 Serial Peripheral Interface (SPI) Electrical Specifications
AC CHARACTERISTICS | Standard
Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless
otherwise stated) Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial | |||||||
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Param. No. | Symbol | Characteristics (1) | Min. | Typ. | Max. | Units | Conditions | |
MSP_1 | FSCK | SCK Frequency | Normal Speed SERCOM | — | — | 21.3 | MHz | Transmitter mode, CTRB.RXEN = 0.
VDDIOx = 1.8V or 3.3 V, CLOAD = 30 pF(max) |
— | — | 21.3 | Full Duplex Transmit and Receive modes,
Loop-Back mode with one SPI communicating to another SPI on the same MCU. VDDIOx = 1.8V or 3.3V, CLOAD = 30 pF(max) | |||||
— | — | 1/(2*(TMIS+NOTE2_TV)) (2) | Full Duplex Transmit and Receive modes,
CLOAD = 30pF(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) | — | — | 48.1 | MHz | Transmitter mode, CTRB.RXEN = 0. VDDIOx = 1.8V or 3.3 V, CLOAD = 20 pF(max) | |||
— | — | 1/(2*(TMIS_HS+NOTE2_TV)) (2) | Full-Duplex Transmit and Receive modes,
CLOAD = 20pF(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. | |||||
MSP_3 | TSCL | SCK Output Low Time | 1/(2*FSCK) | — | — | µs | — | |
MSP_5 | TSCH | SCK Output High Time | 1/(2*FSCK) | — | — | µs | — | |
MSP_7 | TSCF | SCK and MOSI Output Fall Time | — | — | DI_27 or DI_31 | ns | See parameter in I/O Specifications | |
MSP_9 | TSCR | SCK and MOSI Output Rise Time | — | — | DI_25 or DI_29 | ns | See parameter in I/O Specifications | |
MSP_11 | TMOV | MOSI Data Output Valid after SCK | Normal Speed SERCOM | — | — | 10 | ns | — |
High Speed SERCOM (3) | — | — | 4 | ns | — | |||
MSP_13 | TMOH | MOSI hold after SCK | 0 | — | — | ns | — | |
MSP_15A | TMIS | MISO Setup Time of Data Input to SCK | Normal Speed SERCOM | 15 | — | — | ns | — |
High Speed SERCOM (3) | 1 | — | — | ns | — | |||
MSP_17 | TMIH | MISO Hold Time of Data Input to SCK | Normal Speed SERCOM | 0 | — | — | ns | — |
High Speed SERCOM (3) | 2 | — | — | ns | — | |||
MSP_19 | SPI_GCLK | SERCOM SPI input clock frequencies, GCLK_SPI | — | — | FCLK_23 | MHz | — | |
Note:
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AC CHARACTERISTICS | Standard
Operating Conditions: VDDREG = VDDIO = AVDD 1.71V to 3.63V (unless
otherwise stated) Operating temperature: -40°C ≤ TA ≤ +85°C for Industrial | |||||||
---|---|---|---|---|---|---|---|---|
Param. No. | Symbol | Characteristics (1) | Min. | Typical | Max. | Units | Conditions | |
SSP_1 | FSCK | SCK Frequency | Normal Speed SERCOM | — | — | 21.3 | MHz | Receiver mode. VDDIOx = 1.8V or 3.3V, CLOAD = 30 pF(max) |
— | — | 21.3 | Full-Duplex Transmit and Receive modes,
Loop-Back mode with one SPI communicating to another SPI on the same MCU. VDDIOx = 1.8V or 3.3V, CLOAD = 30 pF(max) | |||||
— | — | 1/(2*(TSOV+NOTE2_TMIS)) (2) | Full- Duplex Transmit and Receive modes,
CLOAD = 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. | |||||
High-Speed SERCOM (3) | — | — | 48.1 | MHz | Receiver mode. VDDIOx = 1.8V or 3.3V, CLOAD = 20 pF(max) | |||
— | — | 1/(2*(TSOV_HS+NOTE2_TMIS)) (2) | Full-Duplex Transmit and Receive modes,
CLOAD = 20pF(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. | |||||
SSP_3 | TSCL | SCK Output Low Time | 1/(2*FSCK) | — | — | µs | — | |
SSP_5 | TSCH | SCK Output High Time | 1/(2*FSCK) | — | — | µs | — | |
SSP_7 | TSCF | SCK and MOSI Output Fall Time | — | — | DI_27 or DI_31 | ns | See parameter in I/O spec | |
SSP_9 | TSCR | SCK and MOSI Output Rise Time | — | — | DI_25 or DI_29 | ns | See parameter in I/O spec | |
SSP_11A | TSOV | MISO Data Output Valid after SCK | Normal Speed SERCOM | — | — | 25 | ns | — |
High Speed SERCOM (3) | — | — | 10 | ns | — | |||
SSP_13 | TSOH | MISO hold after SCK | 4 | — | — | ns | — | |
SSP_15 | TSIS | MOSI Setup Time of Data Input to SCK | Normal Speed SERCOM | 6 | — | — | ns | — |
High Speed SERCOM (3) | 2 | — | — | ns | — | |||
SSP_17 | TSIH | MOSI Hold Time of Data Input to SCK | Normal Speed SERCOM | 0 | — | — | ns | — |
High Speed SERCOM (3) | 1 | — | — | ns | — | |||
SSP_19 | TSSS | SS setup to SCK (PRELOADEN=0) | Normal Speed SERCOM | 5 | — | — | ns | — |
High Speed SERCOM (3) | 2 | — | — | ns | — | |||
SSP_21 | TSSH | SS hold after SCK Client | Normal Speed SERCOM | 0 | — | — | ns | — |
High Speed SERCOM (3) | 1 | — | — | ns | — | |||
SSP_23 | SPI_GCLK | SERCOM SPI input clk freq, GCLK_SPI | — | — | FCLK_23 | MHz | — | |
Note:
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