Data Sheet

939
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
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GCLK_DFLL48M_REF
DFLL48M Reference clock frequency 33 KHz
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GCLK_DPLL
FDPLL96M Reference clock frequency 2 MHz
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GCLK_DPLL_32K
FDPLL96M 32k Reference clock frequency 32 KHz
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GCLK_WDT
WDT input clock frequency 48 MHz
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GCLK_RTC
RTC input clock frequency 48 MHz
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GCLK_EIC
EIC input clock frequency 48 MHz
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GCLK_USB
USB input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_0
EVSYS channel 0 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_1
EVSYS channel 1 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_2
EVSYS channel 2 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_3
EVSYS channel 3 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_4
EVSYS channel 4 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_5
EVSYS channel 5 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_6
EVSYS channel 6 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_7
EVSYS channel 7 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_8
EVSYS channel 8 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_9
EVSYS channel 9 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_10
EVSYS channel 10 input clock frequency 48 MHz
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GCLK_EVSYS_CHANNEL_11
EVSYS channel 11 input clock frequency 48 MHz
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GCLK_SERCOMx_SLOW
Common SERCOM slow input clock
frequency
48 MHz
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GCLK_SERCOM0_CORE
SERCOM0 input clock frequency 48 MHz
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GCLK_SERCOM1_CORE
SERCOM1 input clock frequency 48 MHz
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GCLK_SERCOM2_CORE
SERCOM2 input clock frequency 48 MHz
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GCLK_SERCOM3_CORE
SERCOM3 input clock frequency 48 MHz
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GCLK_SERCOM4_CORE
SERCOM4 input clock frequency 48 MHz
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GCLK_SERCOM5_CORE
SERCOM5 input clock frequency 48 MHz
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GCLK_TCC0, GCLK_TCC1
TCC0,TCC1 input clock frequency 96 MHz
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GCLK_TCC2, GCLK_TC3
TCC2,TC3 input clock frequency 96 MHz
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GCLK_TC4, GCLK_TC5
TC4,TC5 input clock frequency 48 MHz
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GCLK_TC6, GCLK_TC7
TC6,TC7 input clock frequency 48 MHz
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GCLK_ADC
ADC input clock frequency 48 MHz
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GCLK_AC_DIG
AC digital input clock frequency 48 MHz
Table 36-7. Maximum Peripheral Clock Frequencies (Continued)
Symbol Description Max. Units