44.5 Maximum Clock Frequencies

Table 44-5. Maximum GCLK Generator Output Frequencies
SymbolDescriptionFmax [MHz]Units
PL0PL2
Fgclkgen[2:0]GCLK Generator output Frequency2496MHz
Fgclkgen[4:3]1666MHz
Table 44-6. Maximum Peripheral Clock Frequencies
SymbolDescriptionMax.Units
PL0PL2
fCPUCPU clock frequency832MHz
fAHBAHB clock frequency832MHz
fAPBAAPBA clock frequency/Bus clock domain = BACKUP88MHz
fAPBAAPBA clock frequency/Bus clock domain = Low Power832MHz
fAPBBAPBB clock frequency832MHz
fAPBCAPBC clock frequency832MHz
fGCLK_DFLL48M_REFDFLL48M Reference clock frequencyNA33kHz
fGCLK_FDPLLFDPLL96M Reference clock frequency22MHz
fGCLK_FDPLL_32KFDPLL96M 32k Reference clock frequency3232kHz
fGCLK_EICEIC input clock frequency1248MHz
fGCLK_FREQM_MSRFREQM Measure1248MHz
fGCLK_FREQM_REFFREQM Reference1248MHz
fGCLK_USBUSB input clock frequencyNA48MHz
fGCLK_EVSYS_CHANNEL_0EVSYS channel 0 input clock frequency1248MHz
fGCLK_EVSYS_CHANNEL_1EVSYS channel 1 input clock frequency
fGCLK_EVSYS_CHANNEL_2EVSYS channel 2 input clock frequency
fGCLK_EVSYS_CHANNEL_3EVSYS channel 3 input clock frequency
fGCLK_EVSYS_CHANNEL_4EVSYS channel 4 input clock frequency
fGCLK_EVSYS_CHANNEL_5EVSYS channel 5 input clock frequency
fGCLK_EVSYS_CHANNEL_6EVSYS channel 6 input clock frequency
fGCLK_EVSYS_CHANNEL_7EVSYS channel 7 input clock frequency
fGCLK_SERCOMx_SLOWCommon SERCOM slow input clock frequency15MHz
fGCLK_SERCOM0_CORESERCOM0 input clock frequency1248MHz
fGCLK_SERCOM1_CORESERCOM1 input clock frequency
fGCLK_SERCOM2_CORESERCOM2 input clock frequency
fGCLK_SERCOM3_CORESERCOM3 input clock frequency
fGCLK_SERCOM4_CORESERCOM4 input clock frequency
fGCLK_SERCOM5_CORESERCOM5 input clock frequency
fGCLK_TCC0TCC0 input clock frequency2496MHz
fGCLK_TC0, GCLK_TC1TC0,TC1 input clock frequency1248MHz
fGCLK_TC2, GCLK_TC3TC2,TC3 input clock frequency
fGCLK_ADCADC input clock frequency1248MHz
fGCLK_ACAC digital input clock frequency
fGCLK_PTCPTC input clock frequency
fGCLK_CCLCCL input clock frequency
fGCLKinExternal GCLK clock input