Hardware Reference
In-Depth Information
Timer Functions
After completing this chapter, you should be
able to
•
Explain the overall structure of the HCS12
timer system
•
Use the
input-capture
function to measure the
duration of a pulse or the period of a square
wave
•
Use the input-capture function to measure
the duty cycle of a waveform or the phase
difference of two waveforms having the same
frequency
•
Use the input-capture function to measure the
frequency of a signal
•
Use the
output-compare
function to create
a time delay or generate a pulse or periodic
waveform
•
•
Use the forced output-compare function
Use the
pulse accumulator
function to
measure the frequency of an unknown signal
and count the number of events occurring in
an interval
•
Configure PWM channels to generate
waveforms of certain frequencies and duty
cycles
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