45.6 Maximum Clock Frequencies

Table 45-7. Maximum GCLK Generator Output Frequencies
SymbolMax.Units
fGCLKGEN0 / fGCLK_MAIN96MHz
fGCLKGEN1
fGCLKGEN2
fGCLKGEN366MHz
fGCLKGEN4
fGCLKGEN5
fGCLKGEN6
fGCLKGEN7
fGCLKGEN8
Table 45-8. Maximum CPU and Bus Clock Frequencies for Parts Running at 64 MHz (1)
SymbolDescriptionMax.Units
fCPUCPU clock frequency64MHz
fAHBAHB clock frequency64MHz
fAPBAAPBA clock frequency64MHz
fAPBBAPBB clock frequency64MHz
fAPBCAPBC clock frequency64MHz
fAPBDAPBD clock frequency64MHz
Note:
  1. See the Ordering Information section to determine the parts running at 64 MHz.
Table 45-9. Maximum CPU and Bus Clock Frequencies for Parts Limited to 48 MHz (1)
SymbolDescriptionMax.Units
fCPUCPU clock frequency48MHz
fAHBAHB clock frequency48MHz
fAPBAAPBA clock frequency48MHz
fAPBBAPBB clock frequency48MHz
fAPBCAPBC clock frequency48MHz
fAPBDAPBD clock frequency48MHz
Note:
  1. See the Ordering Information section to determine the parts limited to 48 MHz.
Table 45-10. Maximum Peripheral Clock Frequencies
SymbolDescriptionMax.Units
fGCLK_DPLLFDPLL96M Reference clock frequency2MHz
fGCLK_DPLL_32KFDPLL96M 32k Reference clock frequency33KHz
fGCLK_EICEIC input clock frequency48MHz
fGCLK_FREQM_MSRFREQM Measure96MHz
fGCLK_FREQM_REFFREQM Reference48MHz
fGCLK_TSENSTSENS 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 frequency5MHz
fGCLK_SERCOMn_CORESERCOMn input clock frequency48MHz
fGCLK_CANnCAN input clock frequency48MHz
fGCLK_TCC0, 1TCCn input clock frequency92MHz
fGCLK_TCC2TCC2 input clock frequency48MHz
fGCLK_TCnTCn input clock frequency48MHz
fGCLK_ADCnADCn input clock frequency48MHz
fGCLK_SDADCSDADC input clock frequency48MHz
fGCLK_DACDAC input clock frequency48MHz
fGCLK_PTCPTC input clock frequency48MHz
fGCLK_CCLCCL input clock frequency48MHz
fGCLK_ACAC digital input clock frequency48MHz