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| PXD10 Datasheet, PDF (87/130 Pages) Lumins Inc. – 4” Dia.X 6” extruded aluminum step poles | |||
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Electrical characteristics
3.11 Fast external crystal oscillator (4â16 MHz) electrical
characteristics
The device provides an oscillator/resonator driver. Figure 13 describes a simple model of the internal
oscillator driver and provides an example of a connection for an oscillator or a resonator.
XTAL
XTAL
CL
VDD
I
EXTAL
DEVICE
CL
R
DEVICE
EXTAL
XTAL
EXTAL
DEVICE
Figure 13. Crystal oscillator and resonator connection scheme
NOTE
XTAL/EXTAL must not be directly used to drive external circuits.
Table 38. Crystal description
Nominal
frequency
(MHz)
4
8
10
12
16
NDK crystal
reference
NX8045GB
NX5032GA
Crystal
equivalent
series
resistance
ESR ï
300
300
150
120
120
Crystal
motional
capacitance
(Cm) fF
2.68
2.46
2.93
3.11
3.90
Crystal
motional
inductance
(Lm) mH
591.0
160.7
86.6
56.5
25.3
Load on
xtalin/xtalout
C1 = C2
(pF)1
Shunt
capacitance
between
xtalout
and xtalin
C02 (pF)
21
2.93
17
3.01
15
2.91
15
2.93
10
3.00
PXD10 Microcontroller Data Sheet, Rev. 1
Freescale Semiconductor
87
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