at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 731
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at91sam9260-cj
Manufacturer Part Number
at91sam9260-cj
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9260-CJ.pdf
(790 pages)
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41.5.2
Table 41-11. RC Oscillator Characteristics
41.5.3
Table 41-12. Main Oscillator Characteristics
Notes:
6221G–ATARM–31-Jan-08
Symbol
1/(t
t
Symbol
1/(t
C
C
t
I
P
I
ST
ST
DDST
DD ON
ON
CRYSTAL
LEXT
CPRCz
CPMAIN
(7)
1. C
2. R
3. R
4. R
5. R
6. Additional user load capacitance should be subtracted from C
7. C
)
)
RC Oscillator Characteristics
Main Oscillator Characteristics
S
S
S
S
S
LEXT
Parameter
Crystal Oscillator Frequency
Crystal Load Capacitance
External Load Capacitance
Duty Cycle
Startup Time
Standby Current Consumption
Drive Level
Current Dissipation
is the shunt capacitance.
= 100 to 200 Ω ; C
= 50 to 100 Ω ; C
= 25 to 50 Ω ; C
= 20 to 50 Ω ; C
Parameter
Crystal Oscillator Frequency
Duty Cycle
Startup Time
is determined by taking into account internal, parasitic and package load capacitance.
S
S
S
= 2.5 to 3.0 pF; C
= 3.2 to 4.0 pF; C
S
= 2.0 to 2.5 pF; C
= 2.0 to 2.5 pF; C
Conditions
C
C
V
C
C
C
C
Standby mode
@ 3 MHz
@ 8 MHz
@ 16 MHz
@ 20 MHz
@ 3 MHz
@ 8 MHz
@ 16 MHz
@ 20 MHz
DDPLL
CRYSTAL
CRYSTAL
S
S
S
S
M
M
= 3 pF
= 7 pF
= 7 pF
= 7 pF
Conditions
M
= 7 to 5 fF (typ, worst case).
= 10 to 8 fF (typ, worst case).
M
= 4 to 3 fF (typ, worst case).
= 2 to 1.5 fF (typ, worst case) using 1 kΩ serial resistor on XOUT.
= 3 to 3.6V
= 12.5 pF
= 17.5 pF
(2)
(3)
(1)
(1)
(1)
(1)
(4)
(5)
1/(t
1/(t
1/(t
1/(t
CPMAIN
CPMAIN
CPMAIN
CPMAIN
(6)
(6)
) = 3 MHz
) = 8 MHz
) = 16 MHz
) = 20 MHz
LEXT
.
12.5
Min
30
3
Min
22
45
10.5
Typ
150
150
300
400
16
12
50
AT91SAM9260
Typ
Max
17.5
14.5
250
250
450
550
1.4
20
70
15
30
50
50
Max
4
1
1
42
55
75
Unit
MHz
Unit
kHz
µW
ms
µA
µA
µs
pF
pF
%
Pf
%
731
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