Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet

42023E–SAM–07/2013

t

STARTUP

Startup time

(1)

Within 90% of final values

100

µs

t

LOCK

Lock time

(1)

f

REF 

= 32kHz, FINE lock, SSG disabled

(2)

600

f

REF 

= 32kHz, ACCURATE lock, dithering 

clock = RCSYS/2, SSG disabled

(2)

1100

1.

These values are based on simulation. These values are not covered by test limits in production or characterization.

2.

Spread Spectrum Generator (SSG) is disabled by writing a zero to the EN bit in the SCIF.DFLL0SSG register.

Table 42-28. 32kHz RC Oscillator Characteristics

f

OUT

Output frequency

 (1)

1.

These values are based on characterization. These values are not covered by test limits in production.

Calibrated against a 32.768kHz 
reference

Temperature compensation disabled

20

32.768

44

kHz

I

RC32K

Current consumption

 (2)

2.

These values are based on simulation. These values are not covered by test limits in production or characterization.

Without temperature compensation

0.5

µA

Temperature compensation enabled

2

µA

t

STARTUP

Startup time

(1)

1

cycle

Table 42-29. System RC Oscillator Characteristics

f

OUT

Output frequency

 (1)

1.

These values are based on characterization. These values are not covered by test limits in production.

Calibrated at 85

°C

110

113.6

116

kHz

I

RCSYS

Current consumption

 (2)

2.

These values are based on simulation. These values are not covered by test limits in production or characterization.

12

µA

t

STARTUP

Startup time

25

38

63

µs

Duty

49.6

50

50.3

%

Table 42-27. Digital Frequency Locked Loop Characteristics