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MC68HC705J1ACPE Datasheet, PDF (28/162 Pages) Freescale Semiconductor, Inc – Freescale Semiconductor, Inc.
Freescale Semiconductor, Inc.
General Description
MCU
C3
27 pF
XTAL
C4
27 pF
VSS
C3
XTAL
C4
C2 C1
OSC1
OSC2
VDD
VSS
Figure 1-4. Crystal Connections with
Oscillator Internal Resistor Mask Option
MCU
R
10 M¾Ω
C3
27 pF
XTAL
C4
27 pF
VSS
C3
XTAL R
C4
C2 C1
OSC1
OSC2
VDD
VSS
Figure 1-5. Crystal Connections without
Oscillator Internal Resistor Mask Option
1.5.2.2 Ceramic Resonator Oscillator
To reduce cost, use a ceramic resonator instead of the crystal. The
circuits shown in Figure 1-6 and Figure 1-7 show ceramic resonator
circuits. Follow the resonator manufacturer’s recommendations, as the
resonator parameters determine the external component values
required for maximum stability and reliable starting. The load
capacitance values used in the oscillator circuit design should include all
stray capacitances.
Technical Data
MC68HC705J1A — Rev. 4.0
General Description
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