AT32UC3L064_11 ATMEL [ATMEL Corporation], AT32UC3L064_11 Datasheet - Page 51

• Manufacturer Part Number: AT32UC3L064_11
• Description: 32-bit Atmel AVR Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

Table 7-12.
Notes:
7.6.2
Table 7-13.
32099HS–12/2011
Symbol
t
I
Symbol
f
t
C
C
I
R
STARTUP
OSC
OUT
STARTUP
OSC32
L
i
S
1. Please refer to the SCIF chapter for details.
2. Nominal crystal cycles.
3. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
32KHz Crystal Oscillator (OSC32K) Characteristics
cess technology. These values are not covered by test limits in production.
Crystal Oscillator Characteristics
32 KHz Crystal Oscillator Characteristics
Parameter
Startup time
Current consumption
Parameter
Crystal oscillator frequency
Startup time
Crystal load capacitance
Internal equivalent load
capacitance
Current consumption
Equivalent series resistance
Figure 7-3.
Figure 7-3
must choose a crystal oscillator where the crystal load capacitance C
in the table. The exact value of C
UC3L
C
i
(2)
and the equation above also applies to the 32 KHz oscillator connection. The user
(2)
Oscillator Connection
Conditions
R
32 768Hz
S
XOUT
= 60kOhm, C
XIN
Conditions
SCIF.OSCCTRL.GAIN = 2
Active mode, f = 0.45MHz,
SCIF.OSCCTRL.GAIN = 0
Active mode, f = 10MHz,
SCIF.OSCCTRL.GAIN = 2
L
can then be found in the crystal datasheet.
L
= 9pF
C
L
(1)
AT32UC3L016/32/64
Min
Min
35
6
C
C
LEXT
LEXT
30 000
30 000
32 768
Typ
170
30
Typ
L
0.9
2
is within the range given
(2)
(1)
Max
Max
12.5
85
cycles
cycles
kOhm
Unit
µA
Unit
Hz
µA
pF
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