s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 97

• Manufacturer Part Number: s908qy2ad1vdwer
• Description: Mc68hc908qt4a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

The oscillator configuration uses five components:
Freescale Semiconductor
•
•
•
•
•
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
The series resistor (R
oscillator guidelines and may not be required for all ranges of operation,
especially with high frequency crystals. Refer to the oscillator
characteristics table in the Electricals section for more information.
1
SIMOSCEN (INTERNAL SIGNAL) OR
OSCENINSTOP (BIT LOCATED IN
CONFIGURATION REGISTER)
MCU
S
Figure 11-2. XTAL Oscillator External Connections
1
(optional)
2
OSC1
B
(can also be a fixed capacitor)
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
C
1
S
) is included in the diagram to follow strict Pierce
R
X
B
1
XTALCLK
NOTE
OSC2
R
C
S
2
BUSCLKX4
See the electrical section for details.
÷ 2
BUSCLKX2
Functional Description
97