48.37 SWD 2-Wire Electrical Specifications

Figure 48-37. SWD 2-Wire Read/Write AC Timing Diagrams
Table 48-50. SWD 2-Wire AC Electrical Specifications
AC CHARACTERISTICSStandard Operating Conditions: VDDIO = AVDD 1.75V to 3.63V, VDDREG = 1.75V to 1.85V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMin.TypMax.UnitsConditions
SWD_1fSWDCLKSWDCLK Clock Frequency——25MHzVDDIO(min) - VDDIO(max)
SWD_3tSWDCLKHIGHSWDCLK Clock High Time1 / (2 * fSWDCLK)——ns
SWD_5tSWDCLKLOWSWDCLK Clock Low Time1 / (2 * fSWDCLK)——ns
SWD_7tSWDIOSKEWSWDIO Skew0—23ns
SWD_9tSWDIOSETUPSWDIO Setup Time4——ns
SWD_11tSWDIOHOLDSWDIO Hold Time1——ns