s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 141

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908AB32
Freescale Semiconductor
*R
S
SIMOSCEN
can be zero (shorted) when used with higher-frequency crystals. Refer to manufacturer’s data.
—
Rev. 1.1
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
•
•
•
•
•
•
•
Figure 9-3. CGM External Connections
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
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)
V
C
DDA
BYP
Technical Data
V
DD
for routing
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