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AT89C5132-ROTUL Folha de dados(PDF) 157 Page - ATMEL Corporation

Nome de Peças AT89C5132-ROTUL
Descrição Electrónicos  USB Microcontroller with 64K Bytes Flash Memory
PDF  181 Pages
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Fabricante Electrônico  ATMEL [ATMEL Corporation]
Página de início  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5132-ROTUL Folha de dados(HTML) 157 Page - ATMEL Corporation

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4173D–USB–02/06
AT89C5132
23.2.4
Oscillator and Crystal
23.2.4.1
Schematic
Figure 23-4. Crystal Connection
Note:
For operation with most standard crystals, no external components are needed on X1 and X2. It
may be necessary to add external capacitors on X1 and X2 to ground in special cases (max 10
pF). X1 and X2 may not be used to drive other circuits.
23.2.4.2
Parameters
Table 105. Oscillator and Crystal Characteristics
V
DD = 2.7 to 3.3V , TA = -40 to +85°C
23.2.5
Phase Lock Loop
23.2.5.1
Schematic
Figure 23-5. PLL Filter Connection
VSS
X1
X2
Q
C1
C2
Symbol
Parameter
Min
Typ
Max
Unit
C
X1
Internal Capacitance (X1 -
V
SS)10
pF
C
X2
Internal Capacitance (X2 -
V
SS)10
pF
C
L
Equivalent Load Capacitance (X1 - X2)
5
pF
DL
Drive Level
50
μW
F
Crystal Frequency
20
MHz
RS
Crystal Series Resistance
40
Ω
CS
Crystal Shunt Capacitance
6
pF
VSS
FILT
R
C1
C2
VSS



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