mc68hc05ct4fn Freescale Semiconductor, Inc, mc68hc05ct4fn Datasheet - Page 22
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mc68hc05ct4fn
Manufacturer Part Number
mc68hc05ct4fn
Description
Mc68hc05 Family Of Microcontrollers Mcus
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC05CT4FN.pdf
(142 pages)
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General Description
1.4.4 OSC1 and OSC2
1.4.5 Reset (RESET)
General Release Specification
NOTE:
The voltage on the IRQ pin affects the mode of operation. See
6. Operating
These pins provide control input for an on-chip clock oscillator circuit that
drives the PLL reference source. A crystal resonator, a ceramic
resonator, or an external signal connects to these pins providing a
system clock. The oscillator frequency is selectable between 5 or 40
times the internal bus rate. Typical oscillator configurations and
component values are shown in
crystal should be consulted, since actual component values are
dependent on the type of crystal used.
This active-low pin is used to reset the MCU to a known startup state by
pulling RESET low. The RESET pin contains an internal Schmitt trigger
as part of its input to improve noise immunity. See
Freescale Semiconductor, Inc.
For More Information On This Product,
(a) Crystal/Ceramic Resonator
15 pF
Oscillator Connections
OSC1
Go to: www.freescale.com
Modes.
10.24 MHz
General Description
MCU
10 M
Figure 1-4. Oscillator Connections
OSC2
15 pF
Figure
1-4. The manufacturer of the
(b) External Clock Source
OSC1
MCU
MC68HC05CT4
Connections
UNCONNECTED
Section 5.
OSC2
<
EXTERNAL CLOCK
Resets.
—
Section
Rev. 2.0
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