Datasheet

679
SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
38.4 Clock Characteristics
38.4.1 Processor Clock Characteristics
38.4.2 Master Clock Characteristics
38.4.3 XIN Clock Characteristics
Table 38-5. Processor Clock Waveform Parameters
Symbol Parameter Conditions Min Max Unit
1/(t
CPPCK
) Processor Clock Frequency
VDDCORE = 1.08V
T
A
= 85°C
–188MHz
Table 38-6. Master Clock Waveform Parameters
Symbol Parameter Conditions Min Max Unit
1/(t
CPMCK
) Master Clock Frequency
VDDCORE = 1.08V
T
A
= 85°C
–94MHz
Table 38-7. 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 x t
CPXIN
0.6 x t
CPXIN
ns
t
CLXIN
XIN Clock Low Half-period – 0.4 x t
CPXIN
0.6 x t
CPXIN
ns
C
IN
XIN Input Capacitance
Main Oscillator in Bypass mode
(i.e., when MOSCEN = 0 and OSCBYPASS = 1
in CKGR_MOR)
–25pF
R
IN
XIN Pulldown Resistor – 500 kΩ
V
IN
XIN Voltage –3.3V