Functions Of The 16-Bit Reload Timer - Fujitsu F2MC-16LX Hardware Manual

16.1.1 Functions of the 16-Bit Reload Timer

This section describes the functions of the 16-bit reload timer.
I Operation modes of the 16-bit reload timer
Internal clock mode
Event count mode
(External clock mode)
I Internal clock mode
One type of counter clock can be selected among three types of internal clocks to enable the
following operations:
❍ Software trigger operation
Sets the TRG bits of the timer control status register (TMCSR) to "1" to start a counting
operation. Trigger input can also be enabled by the TRG bit when external trigger input and
external gate input are performed.
❍ External trigger operation
Starts counting as soon as the selected edge (rising, falling edges, or both) is input to the TIN0
or TIN1 pin.
❍ External gate input operation
Continues counting if a signal of the selected signal level ("L" or "H") is input to the TIN0 or TIN1
pin.
I Event count mode (external clock mode)
A mode in which countdown starts as soon as a signal with a valid edge selected (rising, falling,
or both) is input to the TIN0 or TIN1 pin. This can also be used to provide an interval timer if an
external clock with constant interval time is used.
Clock mode
Reload mode
One-shot mode
Reload mode
One-shot mode
CHAPTER 16 16-BIT RELOAD TIMER
Counting 16-bit reload timer operation
Software trigger operation
External trigger operation
External gate input operation
Software trigger operation
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