mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 118

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Clock Generator Module (CGM)
Analog Power Pin
(V
Oscillator Enable
Signal (SIMOSCEN)
Crystal Output
Frequency Signal
(CGMXCLK)
CGM Base Clock
Output (CGMOUT)
CGM CPU Interrupt
(CGMINT)
MC68HC08AZ60 — Rev 1.0
118
DDA
)
NOTE:
V
V
Route V
capacitors as close as possible to the package.
The SIMOSCEN signal enables the oscillator and PLL.
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.
DDA
DDA
Freescale Semiconductor, Inc.
For More Information On This Product,
is a power pin used by the analog portions of the PLL. Connect the
pin to the same voltage potential as the V
DDA
shows only the logical relation of CGMXCLK to OSC1 and
Clock Generator Module (CGM)
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carefully for maximum noise immunity and place bypass
xclk
) and comes directly from the crystal oscillator circuit.
DD
pin.
MOTOROLA
14-cgm