ATXMEGA384C3_14 Datasheet, PDF (76/125 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA C3 Microcontroller

35.13 Clock and Oscillator Characteristics
35.13.1 Calibrated 32.768kHz Internal Oscillator Characteristics
Table 35-19. 32.768kHz Internal Oscillator Characteristics
Symbol
Parameter
Frequency
Factory calibration accuracy
User calibration accuracy
Condition
T = 85C, V_CC = 3.0V
35.13.2 Calibrated 2MHz RC Internal Oscillator Characteristics
Table 35-20. 2MHz Internal Oscillator Characteristics
Symbol Parameter
Frequency range
Factory calibrated frequency
Factory calibration accuracy
User calibration accuracy
DFLL calibration stepsize
Condition
DFLL can tune to this frequency over
voltage and temperature
T = 85C, V_CC= 3.0V
35.13.3 Calibrated and Tunable 32MHz Internal Oscillator Characteristics
Table 35-21. 32MHz Internal Oscillator Characteristics
Symbol Parameter
Frequency range
Factory calibrated frequency
Factory calibration accuracy
User calibration accuracy
DFLL calibration step size
Condition
DFLL can tune to this frequency over
voltage and temperature
T = 85C, V_CC= 3.0V
35.13.4 32kHz Internal ULP Oscillator Characteristics
Table 35-22. 32kHz Internal ULP Oscillator Characteristics
Symbol Parameter
Factory calibrated frequency
Factory calibration accuracy
Accuracy
Condition
T = 85C, V_CC= 3.0V
Min.
-0.5
-0.5
Min.
1.8
-1.5
-0.2
Min.
30
-1.5
-0.2
Min.
-12
-30
Typ.
32.768
Max.
0.5
0.5
Units
kHz
%
Typ.
2.0
0.23
Max.
2.2
Units
MHz
1.5
0.2
%
Typ.
Max. Units
32
35
MHz
32
1.5
0.2
%
0.24
Typ.
32
Max.
12
30
Units
kHz
%
XMEGA C3 [DATASHEET]
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Atmel-8361F-AVR-ATxmega384C3-Datasheet–11/2014