35.12 USART

Figure 35-4. USART in SPI Mode - Timing Requirements in Host Mode
Table 35-18. USART in SPI Host Mode - Timing Characteristics
Symbol Description Condition Min. Typ. Max. Unit
fSCK SCK clock frequency Host - - 10 MHz
tSCK SCK period Host 100 - - ns
tSCKW SCK high/low width Host - 0.5 × tSCK - ns
tSCKR SCK rise time Host - 2.7 - ns
tSCKF SCK fall time Host - 2.7 - ns
tMIS MISO setup to SCK Host - 10 - ns
tMIH MISO hold after SCK Host - 10 - ns
tMOS MOSI setup to SCK Host - 0.5 × tSCK - ns
tMOH MOSI hold after SCK Host - 1.0 - ns