參數(shù)資料
型號(hào): B80546PG0721M
廠商: INTEL CORP
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 2800 MHz, MICROPROCESSOR, CPGA478
封裝: 1.27 MM PITCH, FLIP CHIP, MICRO PGA-478
文件頁(yè)數(shù): 78/80頁(yè)
文件大小: 1845K
代理商: B80546PG0721M
80
XMEGA C3 [DATASHEET]
8361D–AVR–07/2013
35.13.8 External 32.768kHz crystal oscillator and TOSC characteristics
Table 35-26. External 32.768kHz crystal oscillator and TOSC characteristics.
Note:
1.
See Figure 35-4 for definition.
Figure 35-4. TOSC input capacitance.
The parasitic capacitance between the TOSC pins is CL1 + CL2 in series as seen from the crystal when oscillating without
external capacitors.
CXTAL1
Parasitic capacitance
XTAL1 pin
5.9
pF
CXTAL2
Parasitic capacitance
XTAL2 pin
8.3
CLOAD
Parasitic capacitance load
3.5
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
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 12pF
28
CTOSC1
Parasitic capacitance TOSC1 pin
3.5
pF
CTOSC2
Parasitic capacitance TOSC2 pin
3.5
Recommended safety factor
capacitance load matched to
crystal specification
3
CL1
CL2
2
C
S
O
T
1
C
S
O
T
Device internal
External
32.768kHz crystal
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