Electrical Characteristics
Recommended Oscillator Circuits
33 pF
External
19
19
18
XTAL1
XTAL2
Oscillator
Signal
XTAL1
XTAL 2
CL
7.68 MHz
33 pF
18
N.C.
CL
Crystal Oscillator Mode
Driving from External Source
ITS00764
Figure 86
Oscillator Circuits
Crystal Specification
Parameter
Symbol
Limit Values
Unit
MHz
ppm
pF
Frequency
f
7.680
Frequency calibration tolerance
Load capacitance
Oscillator mode
max. 100
max. 50
C
L
fundamental
Note: The load capacitance C
L
depends on the recommendation of the crystal
specification. Typical values for C
L
are 22 … 33 pF.
Semiconductor Group
249