Datasheet

1163
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
45.6.1 32 kHz Crystal Characteristics
45.6.2 XIN32 Clock Characteristics
45.7 32 kHz RC Oscillator Characteristics
45.8 PLL Characteristics
Table 45-11. 32 kHz Crystal Characteristics
Symbol Parameter Conditions Min Typ Max Unit
ESR Equivalent Series Resistor Rs Crystal @ 32.768 kHz – 50 100 kΩ
C
m
Motional Capacitance Crystal @ 32.768 kHz – – 3 fF
C
SHUNT
Shunt Capacitance Crystal @ 32.768 kHz – – 2 pF
Table 45-12. XIN32 Clock Electrical Characteristics
Symbol Parameter Conditions Min Max Unit
1/(t
CPXIN32
) XIN32 Clock Frequency – – 44 kHz
t
CPXIN32
XIN32 Clock Period – 22 – µs
t
CHXIN32
XIN32 Clock High Half-period – 11 – µs
t
CLXIN32
XIN32 Clock Low Half-period – 11 – µs
t
CLCH32
XIN32 Clock Rise time – 400 – ns
t
CLCL32
XIN32 Clock Fall time – 400 – ns
C
IN32
XIN32 Input Capacitance
32.768 kHz oscillator in Bypass mode (i.e.,
when RCEN = 0, OSC32EN = 0, OSCSEL = 1
and OSC32BYP = 1 in the Slow Clock
Configuration Register (SCKCR)). See Section
24.5 “Slow Clock Selection”.
–6pF
R
IN32
XIN32 Pulldown Resistor – 4 MΩ
V
IN32
XIN32 Voltage V
DDBU
V
DDBU
V
V
INIL32
XIN32 Input Low Level Voltage -0.3 0.3 × V
DDBU
V
V
INIH32
XIN32 Input High Level Voltage 0.7 × V
DDBU
V
DDBU
+ 0.3 V
Table 45-13. RC Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
1/(t
CPRCz
) Crystal Oscillator Frequency – 22 – 42 kHz
– Duty Cycle – 45 – 55 %
t
START
Startup Time – – – 75 µs
Table 45-14. PLLA Characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
OUT
Output Frequency Refer to following table 400 – 800 MHz
f
IN
Input Frequency – 2 – 32 MHz
I
PLL
Current Consumption
Active mode – 7 9 mA
Standby mode – – 1 µA
t
START
Startup Time – – – 50 µs