XC68HC705F32 Motorola, XC68HC705F32 Datasheet - Page 32

• Manufacturer Part Number: XC68HC705F32
• Description: MICROCONTROLLER
• Manufacturer: Motorola

2
separate clock. The oscillator frequency (f
real time custom periodic interrupt (CPI) and the clock system output (REFRESH).
2.4.16.1
The circuit shown in
resonator.
The internal oscillator is designed to interface with an AT-cut parallel-resonant quartz crystal
resonator in the frequency range specified for f
oscillator is recommended when crystals outside the specified ranges are to be used. The crystal
and associated components should be mounted as close as possible to the input pins to minimize
output distortion and start-up stabilization time. The manufacturer of the particular crystal being
considered should be consulted for specific information.
2.4.16.2
An external clock should be applied to the OSC1 input, with the OSC2 pin left unconnected, as
shown in
external clock input. The equivalent specification of the external clock source should be used in
lieu of t
MOTOROLA
2-8
OXOV
Figure
Figure
.
Crystal
External clock
2-2(c). The t
2-2(d) provides the recommended capacitance and feedback resistance values.
MODES OF OPERATION AND PIN DESCRIPTIONS
Figure
OXOV
2-2(a) is recommended when using either a crystal or a ceramic
specification (see
OSC
=32 kHz) provides the time base for the divider, the
OSC
(see
Section
Section
16.4) does not apply when using an
16.4). Use of an external CMOS
MC68HC05F32
TPG