Datasheet

...........continued
Symbol Parameter Conditions Min. Typ. Max. Units
I
XOSC32K
Current consumption - 1.22 2.2 μA
ESR Crystal equivalent series resistance
f=32.768kHz
Safety Factor = 3
C
L
=12.5pF - - 100 kΩ
38.8.3 Digital Frequency Locked Loop (DFLL48M) Characteristics
Table 38-25. DFLL48M Characteristics - Open Loop Mode
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency IDFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
47 48 49 MHz
I
DFLL
Power consumption
on V
DDIN
IDFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
- 403 453 μA
t
STARTUP
Startup time DFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
f
OUT
within 90 % of final value
8 9 μs
Note: 1. DFLL48M in Open loop after calibration at room temperature.
Table 38-26. DFLL48M Characteristics - Closed Loop Mode
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Average Output
frequency
fREF = 32.768kHz 47.76 48 48.24 MHz
f
REF
Reference frequency I 0.732 32.768 33 kHz
Jitter Period Jitter fREF = 32.768kHz - - 0.42 ns
I
DFLL
Power consumption
on V
DDIN
fREF = 32.768kHz - 403 453 μA
t
LOCK
Lock time fREF = 32.768kHz
DFLLVAL.COARSE = DFLL48M
COARSE CAL
DFLLVAL.FINE = 512
DFLLCTRL.BPLCKC = 1
DFLLCTRL.QLDIS = 0
DFLLCTRL.CCDIS = 1
DFLLMUL.FSTEP = 10
200 500 μs
SAM D21 Family
Electrical Characteristics at 105°C
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1060