MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 150
MC68HC08AZ60ACFU
Manufacturer Part Number
MC68HC08AZ60ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC08AZ60ACFU.pdf
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Clock Generator Module (CGM)
9.4.4 CGM External Connections
Advance Information
150
In its typical configuration, the CGM requires seven external
components. Five of these are for the crystal oscillator and two are for
the PLL.
The crystal oscillator is normally connected in a Pierce oscillator
configuration, as shown in
representation of the internal components and may not represent actual
circuitry. The oscillator configuration uses five components:
The series resistor (R
especially with high-frequency crystals. Refer to the crystal
manufacturer’s data for more information.
Figure 9-3
Routing should be done with great care to minimize signal cross talk and
noise. (See
routing information and more information on the filter capacitor’s value
and its effects on PLL performance).
•
•
•
•
•
•
•
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
Bypass capacitor, C
Filter capacitor, C
Clock Generator Module (CGM)
also shows the external components for the PLL:
Acquisition/Lock Time Specifications
1
S
) may not be required for all ranges of operation,
S
F
1
(optional)
2
Figure
BYP
B
(can also be a fixed capacitor)
9-3.
Figure 9-3
MC68HC08AZ60A — Rev 0.0
shows only the logical
on page 160 for
MOTOROLA
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