Datasheet

46
32059L–AVR32–01/2012
AT32UC3B
9.7 Oscillator Characteristics
The following characteristics are applicable to the operating temperature range: T
A
= -40°C to 85°C and worst case of
power supply, unless otherwise specified.
9.7.1 Slow Clock RC Oscillator
9.7.2 32 KHz Oscillator
Note: 1. C
L
is the equivalent load capacitance.
Table 9-16. RC Oscillator Frequency
Symbol Parameter Conditions Min. Typ. Max. Unit
F
RC
RC Oscillator Frequency
Calibration point: T
A
= 85°C 115.2 116 KHz
T
A
= 25°C 112 KHz
T
A
= -40°C 105 108 KHz
Table 9-17. 32 KHz Oscillator Characteristics
Symbol Parameter Conditions Min. Typ. Max. Unit
1/(t
CP32KHz
) Oscillator Frequency
External clock on XIN32 30 MHz
Crystal 32 768 Hz
C
L
Equivalent Load Capacitance 6 12.5 pF
ESR Crystal Equivalent Series Resistance 100 K
Ω
t
ST
Startup Time
C
L
= 6pF
(1)
C
L
= 12.5pF
(1)
600
1200
ms
t
CH
XIN32 Clock High Half-period 0.4 t
CP
0.6 t
CP
t
CL
XIN32 Clock Low Half-period 0.4 t
CP
0.6 t
CP
C
IN
XIN32 Input Capacitance 5pF
I
OSC
Current Consumption
Active mode 1.8 µA
Standby mode 0.1 µA