mc68hc05ct4fn Freescale Semiconductor, Inc, mc68hc05ct4fn Datasheet - Page 95
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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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12.3 Functional Description
MC68HC05CT4
—
Rev. 2.0
0
10
A $00 in the PWM data register yields an off output (0%), but a $3F
yields a duty of 63/64 (98.4%).
When not in use, the PWM system can be shut off to save power by
clearing the PWME bit in MISCR.
Writes to the PWM data register can be performed at any time without
affecting the current PWM output signal. Updates on the PWM output
occur at the end of the PWM period (E x 64). At this time, the new value
is loaded into the PWM data register. If a write to the registers is
performed while the PWM is disabled, data is transferred directly to the
PWM register. A read of the data register reads the active count in
progress, not the buffered value.
After the PWM is enabled (PWM = 1) the PWM output remains low for
one E cycle. This allows synchronization and will not occur again until
the next time the PWM is enabled.
Freescale Semiconductor, Inc.
20
For More Information On This Product,
Figure 12-2. PWM Waveforms
Pulse Width Modulator (PWM)
Go to: www.freescale.com
3F
64 x E
Pulse Width Modulator (PWM)
General Release Specification
Functional Description
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