MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 112

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Oscillator (OSC)
8.3.1 XTAL Oscillator
Technical Data
112
The XTAL oscillator circuit is designed for use with an external crystal or
ceramic resonator to provide accurate clock source.
In its typical configuration, the XTAL 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:
From SIM
Freescale Semiconductor, Inc.
•
•
•
•
•
MCU
SIMOSCEN
For More Information On This Product,
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
Figure 8-2. XTAL Oscillator External Connections
OSC1
Go to: www.freescale.com
1
C
Oscillator (OSC)
1
R
X
B
1
S
1
(optional)
2
XTALCLK
B
(can also be a fixed capacitor)
2OSCOUT
OSC2
R
C
S
*
2
*R
See
Refer to manufacturer’s data.
S
To SIM
can be zero (shorted) when used with higher-frequency crystals.
Figure
Section 19.
÷ 2
OSCOUT
for component value requirements.
8-2. This figure shows only
To SIM
MC68HC908JL8
MOTOROLA
—
Rev. 2.0