MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 141

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC908AB32
MOTOROLA
*R
S
SIMOSCEN
can be zero (shorted) when used with higher-frequency crystals. Refer to manufacturer’s data.
—
Rev. 1.0
OSC1
C
1
The series resistor (R
oscillator guidelines and may not be required for all ranges of operation,
especially with high frequency crystals. Refer to the crystal
manufacturer’s data for more information.
Figure 9-3
Care should be taken with routing in order to minimize signal cross talk
and noise. (See
information and more information on the filter capacitor’s value and its
effects on PLL performance).
R
X
B
1
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
Figure 9-3. CGM External Connections
For More Information On This Product,
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
Bypass capacitor, C
Filter capacitor, C
OSC2
R
Clock Generator Module (CGM)
C
S
also shows the external components for the PLL:
*
2
Go to: www.freescale.com
1
9.10 Acquisition/Lock Time Specifications
CGMXCLK
S
) is included in the diagram to follow strict Pierce
S
F
1
V
(optional)
2
SSA
BYP
B
(can also be a fixed capacitor)
CGMXFC
C
F
Clock Generator Module (CGM)
Functional Description
V
C
DDA
BYP
Technical Data
V
DD
for routing
141