MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 96

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Oscillator (OSC)
7.5 X-tal Oscillator
Data Sheet
96
The crystal (x-tal) oscillator circuit is designed for use with an external
32.768kHz crystal to provide an accurate clock source.
In its typical configuration, the x-tal oscillator is connected in a Pierce
oscillator configuration, as shown in
the logical representation of the internal components and may not
represent actual circuitry. The oscillator configuration uses five
components:
See
Freescale Semiconductor, Inc.
•
•
•
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STOP_RCLKEN
MCU
Section 24.
For More Information On This Product,
CONFIG2
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
for component value requirements.
Go to: www.freescale.com
From SIM
1
(32.768kHz)
SIMOSCEN
Figure 7-5. RC Oscillator
S
1
(optional)
2
B
(can also be a fixed capacitor)
V
REG
To Clock Selection MUX
EN
RCCLK
RC OSCILLATOR
R
OSC1
Figure
EXT
MC68HC908AP Family — Rev. 2.5
7-6. This figure shows only
C
EXT
BUS CLOCK
From SIM
MOTOROLA
OSC2