PEB 2091
PEF 2091
Application Hints
7.1.3
Oscillator Circuit and Crystal
Figure 94 illustrates the recommended oscillator circuit. A crystal or an oscillator signal
may be used.
CLD
XOUT
XIN
N.C.
XOUT
XIN
15.36 MHz
15.36 MHz
Oscillator signal
from external
source
CLD
CLD = 2 x CL - CI/O
Figure 94
Crystal Oscillator or External Clock Source
Crystal Parameters
Frequency:
15.36 MHz
20 pF ± 0.3 pF
60 ppm
20 Ω
7 pF
Load Capacitance CL:
Frequency Tolerance:
Resonance Resistance:
Max. Shunt Capacitance:
Drive Current IQ
1 mA
Maximum Drive Current IQmax
Motional Capacitance
Motional Inductance
Oscillator Mode:
2 mA
20 fF ± 20%
≈ 9.4 mH
fundamental
Note 73: Typical values for capacitances connected to the crystal are 22 ... 33 pF,
depending on board layout.
Semiconductor Group
252
Data Sheet 01.99
INFINEON [ Infineon ]
