Datasheet

...........continued
Symbol Parameter Conditions Min. Typ. Max. Units
ESR Crystal equivalent series resistance
f=32.768kHz
, Safety Factor = 3
C
L
=12.5pF - - 100
37.13.3 Digital Frequency Locked Loop (DFLL48M) Characteristics
Table 37-52. DFLL48M Characteristics - Open Loop Mode
(1)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency DFLLVAL.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
Start-up 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 37-53. DFLL48M Characteristics - Closed Loop Mode
(1)
(Device Variant A)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Average Output
frequency
f
REF
= XTAL, 32 .768kHz, 100ppm
DFLLMUL = 1464
47.963 47.972 47.981 MHz
f
REF
Reference
frequency
0.732 32.768 33 kHz
Jitter Cycle to Cycle
jitter
f
REF
= XTAL, 32 .768kHz, 100ppm
DFLLMUL = 1464
- - 0.42 ns
I
DFLL
Power
consumption on
V
DDIN
f
REF
= XTAL, 32 .768kHz, 100ppm
DFLLMUL = 1464
- 425 482 μA
SAM D21 Family
Electrical Characteristics
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1018