Atmel Evaluation Kit for the SAM4E Series of Flash Microcontrollers ATSAM4E-EK ATSAM4E-EK Data Sheet
Product codes
ATSAM4E-EK
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1430
47.4
Oscillator Characteristics
47.4.1 32 kHz RC Oscillator Characteristics
47.4.2 4/8/12 MHz RC Oscillators Characteristics
Notes:
1. Frequency range can be configured in the Supply Controller Registers
2. Not trimmed from factory
3. After Trimming from factory
The 4/8/12 MHz Fast RC oscillator is calibrated in production. This calibration can be read through the Get CALIB
Bit command (see the EEFC section) and the frequency can be trimmed by software through the PMC.
Bit command (see the EEFC section) and the frequency can be trimmed by software through the PMC.
Table 47-16.
32 kHz RC Oscillator Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
—
RC Oscillator Frequency
—
20
32
44
kHz
—
Frequency Supply Dependency
—
-3
—
3
%/V
—
Frequency Temperature Dependency
Over temperature range (-40°C/
+105°C) versus 25°C
+105°C) versus 25°C
-7
—
7
%
Duty
Duty Cycle
—
45
50
55
%
t
ON
Startup Time
—
—
—
100
µs
I
DDON
Current Consumption
After Startup Time
T
A
Range = -40°C to +105°C
Typical Consumption at 2.2V
supply and
supply and
T
A
= 25°C
—
540
860
nA
Table 47-17.
4/8/12 MHz RC Oscillators Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
f
RANGE
RC Oscillator Frequency Range
4
—
12
MHz
ACC
4
4 MHz Total Accuracy
-40°C<
T
A
<+105°C
4 MHz output selected
—
—
±30
%
ACC
8
8 MHz Total Accuracy
-40°C<
T
A
<+105°C
8 MHz output selected
—
—
±30
%
-40°C<
T
A
<+105°C
8 MHz output selected
—
—
±5
ACC
12
12 MHz Total Accuracy
-40°C<
T
A
<+105°C
—
—
±30
%
-40°C<
T
A
<+105°C
—
—
±5
—
Frequency deviation versus
trimming code
trimming code
8 MHz
12 MHz
—
—
47
64
—
—
—
kHz/trimming code
Duty
Duty Cycle
—
45
50
55
%
t
ON
Startup Time
—
—
—
10
µs
I
DDON
Active Current Consumption
4 MHz
8 MHz
12 MHz
8 MHz
12 MHz
—
—
—
50
65
82
75
95
118
µA