MC68HC705J1A Motorola, MC68HC705J1A Datasheet - Page 27

no-image

MC68HC705J1A

Manufacturer Part Number
MC68HC705J1A
Description
Manufacturer
Motorola
Datasheet

Specifications of MC68HC705J1A

Case
DIP-20L
1.5.2 OSC1 and OSC2
The OSC1 and OSC2 pins are the connections for the on-chip oscillator.
The oscillator can be driven by any of these:
1. Crystal (See
2. Ceramic resonator (See
3. Resistor/capacitor (RC) oscillator (Refer to
4. External clock signal (See
The frequency, f
by two to produce the internal operating frequency, f
1.5.2.1 Crystal Oscillator
Figure 1-4
AT-cut, parallel resonant crystal. Follow the crystal supplier’s
recommendations, as the crystal parameters determine the external
component values required to provide reliable startup and maximum
stability. The load capacitance values used in the oscillator circuit design
should include all stray layout capacitances.
To minimize output distortion, mount the crystal and capacitors as close
as possible to the pins. An internal startup resistor of approximately
2 M
a programmable mask option.
NOTE:
Use an AT-cut crystal and not an AT-strip crystal because the MCU can
overdrive an AT-strip crystal.
MC68HC705J1A — Rev. 4.0
MOTOROLA
Figure 1-4
and
Figure 1-6
MC68HRC705J1A
and
Appendix C.
, of the oscillator or external clock source is divided
osc
and
Figure 1-5
show a typical crystal oscillator circuit for an
is provided between OSC1 and OSC2 for the crystal oscillator as
General Description
General Description
Pin Assignments
Figure
1-5.)
and
Figure
1-7.)
Appendix A.
MC68HSR705J1A.)
Figure
1-8.)
.
op
Technical Data
27

Related parts for MC68HC705J1A