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CHAPTER 14 16-BIT RELOAD TIMER
14.1 Overview of 16-bit Reload Timer
14.1
Overview of 16-bit Reload Timer
The 16-bit reload timer provides two functions either one of which can be selected, the
internal clock that performs the count down by synchronizing with 3-type internal
clocks and the event count mode that performs the count down by detecting the arbiter
edge of pulses input to the external pin.
■ Overview of 16-bit Reload Timer
Underflow of the 16-bit reload timer is defined as a case when the count value becomes from 0000
FFFF
. Therefore, when the equation (reload register setting value + 1) holds, an underflow occurs. Either
H
mode can be selected for the count operation from the reload mode which repeats the count by reloading
the count setting value at the underflow occurrence or the one-shot mode which stops the count at the
underflow occurrence. The interrupt can be generated at the counter underflow occurrence so as to
correspond to the DTC.
318
FUJITSU MICROELECTRONICS LIMITED
MB90335 Series
H
CM44-10137-6E
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