Datasheet

Table 40-47. 32 kHz Crystal Oscillator Electrical Characteristics (Device Variant A)
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 31K cycles
C
L
Crystal load capacitance - - - 12.5 pF
C
SHUNT
Crystal shunt capacitance - - 0.1 - pF
C
XIN32
Parasitic capacitor load TQFP64/48/32 packages - 3.1 - pF
C
XOUT32
Parasitic capacitor load - 3.3 - pF
I
XOSC32K
Current consumption - - 1.2 2.5 µA
ESR Crystal equivalent series
resistance f=32.768kHz
Safety Factor = 3
C
L
=12.5pF - - 141 kΩ
Table 40-48. 32 kHz Crystal Oscillator Electrical Characteristics (Device Variant B and D)
Symbol Parameter Conditions Min. Typ. Max Units
f
OUT
Crystal oscillator frequency - - 32768 - Hz
t
STARTUP
Startup time ESR
XTAL
= 39.9 kW, C
L
= 12.5
pF
- 28K 31K 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 - - 1.2 2.2 µA
ESR Crystal equivalent series
resistance f=32.768kHz
Safety Factor = 3
C
L
=12.5pF - - 100 kΩ
40.11.3 Digital Frequency Locked Loop (DFLL48M) Characteristics
Table 40-49. DFLL48M Characteristics - Open Loop Mode (Device Variant A)
Symbol Parameter Conditions Min. Typ. Max. Units
f
OUT
Output frequency DFLLVAL.COARSE = DFLL48M COARSE CAL
DFLLVAL.FINE = 512
over [-40°, +125°]C, over [2.7, 3.6]V
45 48 49 MHz
SAM D21 Family
AEC-Q100 125°C Specifications
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 1128