XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 181

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

10.5 I/O Signals
10.5.1 Crystal Amplifier Input Pin (OSC1)
10.5.2 Crystal Amplifier Output Pin (OSC2)
10.5.3 External Filter Capacitor Pin (CGMXFC)
MC68HC908AZ60A — Rev 2.0
MOTOROLA
NOTE:
The following paragraphs describe the CGM input/output (I/O) signals.
The OSC1 pin is an input to the crystal oscillator amplifier.
The OSC2 pin is the output of the crystal oscillator inverting amplifier.
The CGMXFC pin is required by the loop filter to filter out phase
corrections. A small external capacitor is connected to this pin.
To prevent noise problems, C
CGMXFC pin as possible with minimum routing distances and no routing
of other signals across the C
*R
S
can be 0 (shorted) when used with higher-frequency crystals. Refer to manufacturer’s data.
SIMOSCEN
C
Clock Generator Module (CGM)
1
R
X
Figure 10-3. CGM External Connections
B
1
R
C
S
2
*
F
F
connection.
should be placed as close to the
CGMXCLK
Clock Generator Module (CGM)
C
F
Technical Data
I/O Signals
C
BYP
181
V
DD