Datasheet

...........continued
Symbol Parameter Conditions Min. Typ. Max. Units
ESR Crystal equivalent series resistance
f=32.768kHz
, Safety Factor = 3
C
L
=12.5pF - - 141 kΩ
Table 39-36. 32kHz Crystal Oscillator Characteristics (Device Variant B, C, D and L)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Crystal oscillator frequency - 32768 - Hz
t
STARTUP
Startup time ESR
XTAL
= 39.9 kΩ, C
L
=
12.5 pF
- 28K 30K cycles
C
L
Crystal load capacitance - - 12.5 pF
C
SHUNT
Crystal shunt capacitance - 0.1 -
C
XIN32
Parasitic capacitor load TQFP64/48/32 packages - 3.2 -
C
XOUT32
Parasitic capacitor load - 3.7 -
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
39.8.3 Digital Frequency Locked Loop (DFLL48M) Characteristics
Table 39-37. DFLL48M Characteristics - Open Loop Mode
(1)
(Device Variant A)
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
- 403 457 μA
t
STARTUP
Start-up time DFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
f
OUT
within 90 % of final value
7 8 9 μs
Table 39-38. DFLL48M Characteristics - Open Loop Mode
(1)
(Device Variant B, C, D and L)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency IDFLLVAL.COARSE = DFLL48M COARSE
CAL
DFLLVAL.FINE = 512
47 48 49 MHz
SAM D21 Family
Electrical Characteristics at 125°C
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1091