MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 97

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Crystal Output
Frequency Signal
(CGMXCLK)
CGM Base Clock
Output (CGMOUT)
CGM CPU Interrupt
(CGMINT)
15-cgm1m_a
MOTOROLA
CGMXCLK is the crystal oscillator output signal. It runs at the full speed
of the crystal (f
Figure 3
OSC2 and may not represent the actual circuitry. The duty cycle of
CGMXCLK is unknown and may depend on the crystal and other
external factors. Also, the frequency and amplitude of CGMXCLK can be
unstable at startup.
CGMOUT is the clock output of the CGM. This signal is used to generate
the MCU clocks. CGMOUT is a 50% duty cycle clock running at twice
the bus frequency. CGMOUT is software programmable to be either the
oscillator output, CGMXCLK, divided by two or the VCO clock,
CGMVCLK, divided by two.
CGMINT is the CPU interrupt signal generated by the PLL lock detector.
Freescale Semiconductor, Inc.
For More Information On This Product,
shows only the logical relation of CGMXCLK to OSC1 and
Go to: www.freescale.com
xclk
) and comes directly from the crystal oscillator circuit.
CGM
MC68HC708XL36
I/O Signals
CGM
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