57.12 Maximum Clock Frequencies Electrical Specifications

Table 57-14. Maximum Clock Frequencies Electrical Specifications
AC CHARACTERISTICS Standard Operating Conditions: VDDIO = VDDIN 2.5V to 3.6V (unless otherwise stated)

Operating temperature :

-40°C ≤ TA ≤ +85°C for Industrial

Param. No.SymbolCharacteristicsMax.Units
FCLK_1 fHCLKProcessor clock frequency300 (1)MHz
FCLK_3fMCKHost Clock frequencyFCLK_1 / 2MHz
FCLK_5fFCLKFree Running Clock frequencyFCLK_1MHz
FCLK_7fSYSTCKSysTick External Clock frequencyFCLK_1 / 2MHz
FCLK_9fGCLK[I2SCx]GCLK clock freq output for I2SCx133MHz
FCLK_11fPLLACKPLLA reference clock frequency32MHz
FCLK_13fPCK[0:2]Programmable clock output frequency 0..2133MHz
FCLK_15fPCK[3:7]Programmable clock output frequency 3..7133MHz
Note:
  1. Max Processor clock freq = 300 MHz when Vddcore = 1.2 to 1.32V;

    Max Processor clock freq = 266 MHz when Vddcore = 1.08 to 1.2V.