Datasheet

...........continued
Symbol Parameter Conditions Min. Typ. Max. Units
t
LOCK
Lock time f
REF
= XTAL, 32 .768kHz, 100ppm
DFLLMUL = 1464
DFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
DFLLCTRL.BPLCKC = 1
DFLLCTRL.QLDIS = 0
DFLLCTRL.CCDIS = 1
DFLLMUL.FSTEP = 10
- 350 1500 µs
Note: All parts are tested in production to be able to use the DFLL as main CPU clock whether in DFLL
closed loop mode with an external OSC reference or the internal OSC8M.
40.11.4 32.768 kHz Internal Oscillator (OSC32K) Characteristics
Table 40-53. 32 kHz RC Oscillator Electrical Characteristics (Device Variant A)
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 [2.7, 3.63]V
28.508 32.768 35.389 kHz
Calibrated against a 32.768kHz
reference at 25°C, at V
DD
=3.3V
31.621 32.768 33.423
Calibrated against a 32.768kHz
reference at 25°C, over [2.7, 3.63]V
31.457 32.768 34.079
I
OSC32K
Current consumption - - 0.79 3.7 uA
t
STARTUP
Startup time - - 1 2 cycles
Duty Duty Cycle - - 50 - %
SAM D21 Family
AEC-Q100 125°C Specifications
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1131