SAM3SD8C Atmel Corporation, SAM3SD8C Datasheet - Page 1085

• Manufacturer Part Number: SAM3SD8C
• Manufacturer: Atmel Corporation

40.4.4
Table 40-17. Crystal Characteristics
40.4.5
Table 40-18. XIN32 Clock Electrical Characteristics (In Bypass Mode)
Note:
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
Symbol
ESR
C
C
Symbol
1/(t
t
t
t
t
t
C
R
V
V
CPXIN32
CHXIN32
CLXIN32
CLCH
CHCL
XIN32_IL
XIN32_IH
M
SHUNT
IN
IN
CPXIN32
1. These characteristics apply only when the 32768 kHz XTAL Oscillator is in bypass mode (i.e., when OSCBYPASS: = 1 in
)
32.768 kHz Crystal Characteristics
32.768 kHz XIN32 Clock Input Characteristics in Bypass Mode
SUPC_MR and XTALSEL = 1 in the SUPC_CR registers.
Parameter
Equivalent Series Resistor (R
Motional capacitance
Shunt capacitance
Parameter
XIN32 Clock Frequency
XIN32 Clock Period
XIN32 Clock High Half-period
XIN32 Clock Low Half-period
Rise Time
Fall Time
XIN32 Input Capacitance
XIN32 Pull-down Resistor
V
V
XIN32
XIN32
Input Low-level Voltage
Input High-level Voltage
V
XIN_IL
S)
V
XIN_IH
t
CPXIN
Conditions
Crystal @ 32.768 KHz
Crystal @ 32.768 KHz
Crystal @ 32.768 KHz
Conditions
(1)
(1)
(1)
(1)
t
CPXIN
0.7 x V
Min
0.6
0.6
t
CLCH
Min
-0.3
400
400
22
11
11
3
t
DDIO
CPXIN
Typ
50
t
CHXIN
SAM3S8/SD8
SAM3S8/SD8
0.3 x V
V
DDIO
Max
44
6
5
+0.3
Max
100
DDIO
3
2
t
CHCL
Units
kHz
MΩ
Unit
pF
µs
µs
µs
ns
ns
KΩ
V
V
pF
fF
1085
1085