Datasheet

DRAFT
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
1394
45.4 Crystal Oscillators Characteristics
45.4.1 32 kHz RC Oscillator Characteristics
45.4.2 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.
Table 45-15. 32 kHz RC Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
OSC
RC Oscillator Frequency 20 32 44 kHz
Frequency Supply Dependency -3 3 %/V
Frequency Temperature Dependency
Over temperature range -40 to 85 °C versus
T
A
25°C
-11 11 %
Duty Duty Cycle 45 50 55 %
t
START
Startup Time 100 µs
I
DDON
Current Consumption
After startup time
Temp. range = -40 to 85 °C
Typical consumption at 2.2V supply and T
A
= 25°C
540 870 nA
Table 45-16. 4/8/12 MHz RC Oscillators Characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
OSC
RC Oscillator Frequency Range
(1)
412MHz
ACC
4
4 MHz Total Accuracy
-40°C < Temp < +85°C
4 MHz output selected
(1)(2)
±35 %
ACC
8
8 MHz Total Accuracy
-40°C < Temp < +85°C
8 MHz output selected
(1)(3)
±3.5 %
-20°C < Temp < +85°C
8 MHz output selected
(1)(3)
±2.5 %
0°C < Temp < +70°C
8 MHz output selected
(1)(3)
±2 %
ACC
12
12 MHz Total Accuracy
-40°C < Temp < +85°C
12 MHz output selected
(1)(3)
±3.5 %
-20°C < Temp < +85°C
12 MHz output selected
(1)(3)
±2.7 %
0°C < Temp < +70°C
12 MHz output selected
(1)(3)
±2 %
Duty Duty Cycle 45 50 55 %
t
START
Startup Time 10 µs
I
DDON
Active Current Consumption
4MHz
8MHz
12 MHz
80
105
145
120
160
210
µA