Datasheet

1246
SAM9X35 [DATASHEET]
11055E–ATARM–10-Mar-2014
47.6 12 MHz RC Oscillator Characteristics
47.7 32 kHz Oscillator Characteristics
Notes: 1. R
S
is the equivalent series resistance.
2. C
LEXT32
is determined by taking into account internal, parasitic and package load capacitance.
Figure 47-3. 32 kHz Oscillator Schematics
Table 47-10. 12 MHz RC Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
f0 Nominal Frequency 8.4 12 15.6 MHz
Duty Duty Cycle 45 50 55 %
I
DD ON
Power Consumption Oscillation
Without trimming
After trimming sequence
86
86
140
125
µA
t
ST
Startup time 6 10 µs
I
DD STDBY
Standby consumption 22 µA
Table 47-11. 32 kHz Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
1/(t
CP32KHz
) Crystal Oscillator Frequency 32 768 kHz
C
CRYSTAL32
Load Capacitance Crystal @ 32.768 kHz 6 12.5 pF
C
LEXT32
(2)
External Load Capacitance
C
CRYSTAL32
= 6 pF 6 pF
C
CRYSTAL32
= 12.5 pF 19 pF
Duty Cycle 40 50 60 %
t
ST
Startup Time
R
S
= 50 kΩ
(1)
C
CRYSTAL32
= 6 pF 400 ms
C
CRYSTAL32
= 12.5 pF 900 ms
R
S
= 100 kΩ
(1)
C
CRYSTAL32
= 6 pF 600 ms
C
CRYSTAL32
= 12.5 pF 1200 ms
XIN32 XOUT32 GNDBU
C
LEXT32
C
LEXT32
C
CRYSTAL32