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| SAM4L Datasheet, PDF (1126/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU | |||
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ATSAM4L4/L2
Table 42-20. Crystal Oscillator Characteristics
Symbol
CL
CSHUNT
CXIN
CXOUT
tSTARTUP
Parameter
Crystal load capacitance(1)
Crystal shunt capacitance(1)
Parasitic capacitor load(2)
Parasitic capacitor load(2)
Startup time(1)
Conditions
TQFP100 package
SCIF.OSCCTRL.GAIN = 2
Active mode, f = 0.6MHz,
SCIF.OSCCTRL.GAIN = 0
Min
Typ
Max
6
18
7
4.91
3.22
30 000 (3)
30
Unit
pF
cycles
Active mode, f = 4MHz,
130
SCIF.OSCCTRL.GAIN = 1
IOSC
Current consumption(1)
Active mode, f = 8MHz,
SCIF.OSCCTRL.GAIN = 2
260
µA
Active mode, f = 16MHz,
590
SCIF.OSCCTRL.GAIN = 3
Active mode, f = 30MHz,
960
SCIF.OSCCTRL.GAIN = 4
1.
These values are based on simulation. These values are not covered by test limits in production or characterization.
2.
These values are based on characterization. These values are not covered by test limits in production.
3.
Nominal crystal cycles.
Figure 42-3. Oscillator Connection
Crystal
LM
CSHUNT
RM
CM
Xin
C LEXT
CSTRAY
CLEXT
Xout
42023CâSAMâ02/2013
1126
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