43.2.27 SWD 2-Wire AC Electrical Specifications

Table 43-77. SWD 2-Wire AC Electrical Specifications
AC CharacteristicsStandard Operating Conditions: VDD = 1.9V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ TA ≤ +85°C for Industrial Temp -40°C ≤ TA ≤ +125°C for Extended Temp
Param. No.SymbolCharacteristicsMin.TypMax.UnitsConditions
SWD_1fSWDCLKSWDCLK clock frequency—— 25MHzVDD at 1.9V – 3.6V
SWD_3tSWDCLKHIGHSWDCLK clock high time20——ns—
SWD_5tSWDCLKLOWSWDCLK clock low time20——ns—
SWD_4tSWDCLKRISESWDCLK clock rise time — — 9.5ns—
SWD_6tSWDCLKFALLSWDCLK clock fall time — — 9.5ns—
SWD_7tSWDIOSKEWSWDIO skew-5—+5ns—
SWD_9tSWDIOSETUPSWDIO setup time4——ns—
SWD_11tSWDIOHOLDSWDIO hold time1——ns—
Note: These parameters are characterized but not tested in manufacturing.
Figure 43-57. SWD 2-Wire Read/Write AC Timing Diagram