Data Sheet

1096
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
Notes: 1. These values are based on simulation. These values are not covered by test limits in production or
characterization.
2. This oscillator is always on.
A.8.6 8MHz RC Oscillator (OSC8M) Characteristics
Figure A-5. Internal 8MHz RC Oscillator Characteristics (Device Variant A)
Figure A-6. Internal 8MHz RC Oscillator Characteristics (Device Variant B)
Table A-48. Ultra Low Power Internal 32kHz RC Oscillator Characteristics (Device Variant B)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency
Calibrated against a 32.768kHz
reference at 25 C, over [-40,
+125]C, over [1.62, 3.63]V
25.559 32.768 40.305
kHzCalibrated against a 32.768kHz
reference at 25 C, at V
DD
=3.3V
31.293 32.768 34.570
Calibrated against a 32.768kHz
reference at 25 C, over [1.62, 3.63]V
31.293 32.768 34.570
Duty Duty Cycle
I
- 50 - %
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency
I Calibrated against a 8MHz reference
at 25 C, over [-40, +125]C, over [1.62,
3.63]V
7.54 8 8.19
MHzCalibrated against a 8MHz reference
at 25 C, at V
DD
=3.3V
7.94 8 8.06
Calibrated against a 8MHz reference
at 25 C, over [1.62, 3.63]V
7.92 8 8.08
I
OSC8M
Current consumption
IIDLE IDLE2 on OSC32K versus IDLE2 on
calibrated OSC8M enabled at 8MHz
(FRANGE=1, PRESC=0)
- 64 100 A
t
STARTUP
Startup time
I
- 2.1 3 s
Duty Duty cycle
I
- 50 - %
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency
Calibrated against a 8MHz reference
at 25 C, over [-40, +125]C, over [1.62,
3.63]V
7.54 8 8.19
MHzCalibrated against a 8MHz reference
at 25 C, at V
DD
=3.3V
7.94 8 8.06
Calibrated against a 8MHz reference
at 25 C, over [1.62, 3.63]V
7.92 8 8.06