Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
1050
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
48.5
12 MHz RC Oscillator Characteristics
48.6
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 48-3. 32 kHz Oscillator Schematic
Table 48-10. 12 MHz RC Oscillator Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
F0
Nominal Frequency
8.4
12
15.6
MHz
Duty
Duty Cycle
45
50
55
%
I
DD ON
Power Consumption
Oscillation
Oscillation
86
86
140
125
µA
t
ON
Start-up time
6
10
µs
I
DD STDBY
Standby consumption
22
µA
Table 48-11. 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
External Load Capacitance
C
CRYSTAL32
= 6 pF
6
pF
C
CRYSTAL32
= 12.5 pF
19
pF
Duty Cycle
40
50
60
%
t
ST
Start-up Time
R
S
= 50 k
C
CRYSTAL32
= 6 pF
400
ms
C
CRYSTAL32
= 12.5 pF
900
ms
R
S
= 100 k
C
CRYSTAL32
= 6 pF
600
ms
C
CRYSTAL32
= 12.5 pF
1200
ms
XIN32
XOUT32
GNDBU
C
LEXT32
C
LEXT32
C
CRYSTAL32