mc68hc05j1avp Freescale Semiconductor, Inc, mc68hc05j1avp Datasheet - Page 22

• Manufacturer Part Number: mc68hc05j1avp
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

General Description
1.6.2 OSC1 and OSC2
1.6.2.1 Crystal
Technical Data
22
The OSC1 and OSC2 pins are the control connections for the on-chip
oscillator. Depending on the mask option selected, the oscillator can be
driven by any one of these:
The frequency of the internal oscillator is f
internal oscillator output by two to produce the internal clock with a
frequency of f
An internal feedback resistor between the OSC1 and OSC2 pins is
available as a mask option. The feedback resistor mask option is
available only when the crystal/ceramic resonator mask option is also
selected.
With the crystal/ceramic resonator mask option, a crystal connected to
the OSC1 and OSC2 pins can drive the on-chip oscillator.
and
parallel resonant crystal. Follow the crystal supplier’s recommendations,
as the crystal parameters determine the external component values
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Freescale Semiconductor, Inc.
Figure 1-5
For More Information On This Product,
Crystal
Ceramic resonator
Resistor-capacitor (RC) network
External clock signal
MCU
Figure 1-3. Bypassing Layout Recommendation
Go to: www.freescale.com
OP
V
V
0.1 µF
DD
C1
SS
General Description
show a typical crystal oscillator circuit for an AT-cut,
.
V+
+
C2
C2
OSC
C1
. The MCU divides the
MC68HC05J1A — Rev. 3.0
V
V
DD
SS
Figure 1-4
MOTOROLA