參數(shù)資料
型號: MR80C154-25P883D
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 25 MHz, MICROCONTROLLER, CQCC44
封裝: LCC-44
文件頁數(shù): 129/142頁
文件大小: 61013K
代理商: MR80C154-25P883D
87
XMEGA B3 [DATASHEET]
8074D–AVR–08/2013
Note:
1.
Numbers for negative impedance are not tested but guaranteed from design and characterization.
36.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
Table 36-28. External 32.768kHz crystal oscillator and TOSC characteristics.
Note:
1.
See Figure 36-4 on page 87 for definition
Figure 36-4. TOSC input capacitance
The input capacitance between the TOSC pins is C
L1 + CL2 in series as seen from the crystal when oscillating without
external capacitors.
C
XTAL1
Parasitic capacitance
5.9
pF
C
XTAL2
Parasitic capacitance
8.3
C
LOAD
Parasitic capacitance load
3.5
Symbol
Parameter
Condition
Min
Typ
Max
Units
ESR/R1
Recommended crystal equivalent
series resistance (ESR)
Crystal load capacitance 6.5pF
60
k
Crystal load capacitance 9.0pF
35
Crystal load capacitance 12.0pF
28
CIN_TOSC
Input capacitance between TOSC pins
Normal mode
3.5
pF
Low power mode
3.5
Recommended Safety factor
capacitance load matched to
crystal specification
3
Long term Jitter (SIT)
0
%
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
CL1
CL2
2
C
S
O
T
1
C
S
O
T
Device internal
External
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