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ATXMEGA8E5 Datasheet(PDF) 89 Page - ATMEL Corporation

Part # ATXMEGA8E5
Description  8/16-bit Atmel AVR XMEGA Microcontrollers
PDF  147 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATXMEGA8E5 Datasheet(HTML) 89 Page - ATMEL Corporation

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89
XMEGA E5 [DATASHEET]
Atmel-8153I–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–08/2014
Note:
1.
Numbers for negative impedance are not tested in production but guaranteed from design and characterization.
36.13.8 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 for definition.
Figure 36-4. 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.
ESR
SF=Safety factor
min(R
Ω)SF
k
Ω
CXTAL1
Parasitic capacitance
XTAL1 pin
5.4
pF
CXTAL2
Parasitic capacitance
XTAL2 pin
7.1
CLOAD
Parasitic capacitance
load
3.07
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
Ω
Crystal load capacitance 9.0pF
35
CTOSC1
Parasitic capacitance TOSC1 pin
5.3
pF
CTOSC2
Parasitic capacitance TOSC2 pin
7.4
pF
Recommended safety factor
capacitance load matched to
crystal specification
3.0
CL1
CL2
2
C
S
O
T
1
C
S
O
T
Device internal
External
32.768kHz crystal



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