37.6 Maximum Clock Frequencies

Table 37-6. Maximum GCLK Generator Output Frequencies
SymbolDescriptionConditionsMax.Units
fGCLKGEN0 / fGCLK_MAIN

fGCLKGEN1

fGCLKGEN2

fGCLKGEN3

fGCLKGEN4

fGCLKGEN5

fGCLKGEN6

fGCLKGEN7

fGCLKGEN8

GCLK Generator Output FrequencyUndivided96MHz
Divided48MHz
Table 37-7. Maximum Peripheral Clock Frequencies
SymbolDescriptionMax.Units
fCPUCPU clock frequency48MHz
fAHBAHB clock frequency48MHz
fAPBAAPBA clock frequency48MHz
fAPBBAPBB clock frequency48MHz
fAPBCAPBC clock frequency48MHz
fGCLK_DFLL48M_REFDFLL48M Reference clock frequency33KHz
fGCLK_DPLLFDPLL96M Reference clock frequency2MHz
fGCLK_DPLL_32KFDPLL96M 32k Reference clock frequency32KHz
fGCLK_WDTWDT input clock frequency48MHz
fGCLK_RTCRTC input clock frequency48MHz
fGCLK_EICEIC input clock frequency48MHz
fGCLK_USBUSB input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_0EVSYS channel 0 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_1EVSYS channel 1 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_2EVSYS channel 2 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_3EVSYS channel 3 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_4EVSYS channel 4 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_5EVSYS channel 5 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_6EVSYS channel 6 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_7EVSYS channel 7 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_8EVSYS channel 8 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_9EVSYS channel 9 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_10EVSYS channel 10 input clock frequency48MHz
fGCLK_EVSYS_CHANNEL_11EVSYS channel 11 input clock frequency48MHz
fGCLK_SERCOMx_SLOWCommon SERCOM slow input clock frequency48MHz
fGCLK_SERCOM0_CORESERCOM0 input clock frequency48MHz
fGCLK_SERCOM1_CORESERCOM1 input clock frequency48MHz
fGCLK_SERCOM2_CORESERCOM2 input clock frequency48MHz
fGCLK_SERCOM3_CORESERCOM3 input clock frequency48MHz
fGCLK_SERCOM4_CORESERCOM4 input clock frequency48MHz
fGCLK_SERCOM5_CORESERCOM5 input clock frequency48MHz
fGCLK_TCC0, fGCLK_TCC1TCC0,TCC1 input clock frequency96MHz
fGCLK_TCC2, fGCLK_TCC3,fGCLK_TC3TCC2, TCC3, TC3 input clock frequency96MHz
fGCLK_TC4, GCLK_TC5TC4,TC5 input clock frequency48MHz
fGCLK_TC6, GCLK_TC7TC6,TC7 input clock frequency48MHz
fGCLK_ADCADC input clock frequency48MHz
fGCLK_AC_DIGAC digital input clock frequency48MHz
fGCLK_AC_ANAAC analog input clock frequency64KHz
fGCLK_AC1_DIGAC1 digital input clock frequency48MHz
fGCLK_AC1_ANAAC1 analog input clock frequency64KHz
fGCLK_DACDAC input clock frequency48MHz
fGCLK_PTCPTC input clock frequency48MHz
fGCLK_I2S_0I2S serializer 0 input clock frequency13MHz
fGCLK_I2S_1I2S serializer 1 input clock frequency13MHz