7.3.3 SPI Interface Timing

Table 7-6. AC Characteristics of SPI InterfaceApplicable over the recommended operating range from TA = -40°C to +125°C, VCC = +2.7V to +5.5V.
ParametersSymbolMin.Max.Units
SCK Clock FrequencyfSCK16MHz
SCK High TimetWH20ns
SCK Low TimetWL25ns
CS High TimetCS100ns
CS Setup TimetCSS100ns
CS Hold TimetCSH100ns
Data in Setup TimetSU5ns
Data in Hold TimetH5ns
Input Rise Time(1, 2)tRI2μs
Input Fall Time(1, 2)tFI2μs
Output ValidtV25ns
Output Hold TimetHO0ns
Output Disable TimetDIS25ns
Note:
  1. Values are based on characterization and are not production tested.
  2. System designers must ensure that all AC parametrics are met, which will typically require rise and fall times faster than these values for most clock rates. Ramp rates slower than this may result in improper operation.
Figure 7-2. SPI Mode 0 Synchronous Data Timing
Figure 7-3. SPI Mode 3 Synchronous Data Timing