SAM3S8C Atmel Corporation, SAM3S8C Datasheet - Page 1082

• Manufacturer Part Number: SAM3S8C
• Manufacturer: Atmel Corporation

Table 40-14. 32 kHz RC Oscillator Characteristics
40.4.2
Table 40-15. 4/8/12 MHz RC Oscillators Characteristics
Notes:
The 4/8/12 MHz Fast RC oscillator is calibrated in production. This calibration can be read through the Get CALIB Bit com-
mand (see EEFC section) and the frequency can be trimmed by software through the PMC. The
40-13
1082
1082
Symbol
Duty
T
I
Symbol
F
ACC
ACC
ACC
Duty
T
I
DDON
DDON
ON
ON
Range
4
8
12
shows the frequency versus trimming for 8 and 12 MHz.
1. Frequency range can be configured in the Power Management Controller Registers
2. Not trimmed from factory
3. After Trimming from factory
SAM3S8/SD8
SAM3S8/SD8
4/8/12 MHz RC Oscillators Characteristics
Parameter
RC Oscillator Frequency Range
4 MHz Total Accuracy
8 MHz Total Accuracy
12 MHz Total Accuracy
Frequency deviation versus
trimming code
Duty Cycle
Startup Time
Active Current Consumption
Parameter
Duty Cycle
Startup Time
Current Consumption
Conditions
(1)
-40°C<Temp<+85°C
4 MHz output selected
-40°C<Temp<+85°C
8 MHz output selected
-20°C<Temp<+85°C
8 MHz output selected
0°C<Temp<+70°C
8 MHz output selected
-40°C<Temp<+85°C
12 MHz output selected
-20°C<Temp<+85°C
12 MHz output selected
0°C<Temp<+70°C
12 MHz output selected
4MHz
8MHz
12MHz
Conditions
After Startup Time
Temp. Range = -40°C to +85°C
Typical Consumption at 2.2V
supply and Temp = 25°C
12 MHz
8 MHz
(1)(2)
(1)(3)
(1)(3)
(1)(3)
(1)(3)
(1)(3)
(1)(3)
Min
45
4
49.2
37.5
Typ
105
145
50
80
Min
45
Max
±3.5
±2.5
±3.5
±2.7
±35
120
160
210
±2
±2
12
55
10
Typ
540
50
Figure 40-12
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
kHz/trimming code
Max
100
870
55
Unit
MHz
µA
µs
%
%
%
%
%
%
%
%
and
Unit
Figure
nA
µs
%