Datasheet

1029
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
46.5 Clock Characteristics
46.5.1 Processor Clock Characteristics
46.5.2 Master Clock Characteristics
46.5.3 XIN Clock Characteristics
46.6 Crystal 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.
46.6.1 32 kHz Oscillator Characteristics
Table 46-6. Processor Clock Waveform Parameters
Symbol Parameter Conditions Min Max Unit
1/(t
CPPCK
) Processor Clock Frequency
VDDCORE = 1.1V; T
A
= 85°C 200
MHz
VDDCORE = 1.3V ± 2%; T
A
= 85°C 240
Table 46-7. Master Clock Waveform Parameters
Symbol Parameter Conditions Min Max Unit
1/(t
CPMCK
) Master Clock Frequency
VDDCORE = 1.1V; T
A
= 85°C 100
MHz
VDDCORE = 1.3V ± 2%; T
A
= 85°C 120
Table 46-8. XIN Clock Electrical Characteristics
Symbol Parameter Conditions Min Max Unit
1/(t
CPXIN
) XIN Clock Frequency 50.0 MHz
t
CPXIN
XIN Clock Period 20.0 ns
t
CHXIN
XIN Clock High Half-period 0.4 × t
CPXIN
0.6 × t
CPXIN
ns
t
CLXIN
XIN Clock Low Half-period 0.4 × t
CPXIN
0.6 × t
CPXIN
ns
C
IN
XIN Input Capacitance
Main oscillator in Bypass mode (i.e., when
MOSCEN = 0 and OSCBYPASS = 1 in
CKGR_MOR). See Section 27.9.7 “PMC Clock
Generator Main Oscillator Register”.
25 pF
R
IN
XIN Pulldown Resistor 500 kΩ
V
IN
XIN voltage 3.3 V
Table 46-9. 32 kHz Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
1/(t
CP32KHz
) Crystal Oscillator Frequency 32.768 kHz
C
CRYSTAL32
Crystal Load Capacitance Crystal @ 32.768 kHz 6 12.5 pF
C
LEXT32
(2)
External Load Capacitance
C
CRYSTAL32
= 6 pF
(3)
4pF
C
CRYSTAL32
= 12.5 pF
(3)
17 pF
Duty Cycle 40 60 %