Function Of 16-Bit Reload Timer - Fujitsu MB90335 Series Hardware Manual

MB90335 Series
14.1.1

Function of 16-bit Reload Timer

This section describes overview and Function of 16-bit reload timer.
■ Operation Modes of 16-bit Reload Timer
Clock Mode
Internal clock
Event count mode
(External clock Mode)
■ Internal Clock Mode
One type can be selected for the count clock from 3 types of internal clocks.
●
Software trigger operation
When "1" is written to TRG bit of timer control status register (TMCSR0), counter operation is started.
Trigger input using the TRG bit is valid for the external trigger input and the external gate input.
●
External trigger operation
When the selected edges (rising edge, falling edge, or both edges) are input to the TIN0 pin, the count
operation is started.
●
External gate input operation
While the selected signal ("L" or "H") is being input to TIN0, the count operation is continued.
■ Event Count Mode (External Clock Mode)
This function count downs at the edge when the selected edges (rising edge, falling edge, or both edges) are
input to the TIN0 pin.
External clock of a constant cycle can be also used for the interval timer.
CM44-10137-6E
Counter operation
Reload mode
One-shot mode
Reload mode
One-shot mode
FUJITSU MICROELECTRONICS LIMITED
CHAPTER 14 16-BIT RELOAD TIMER
14.1 Overview of 16-bit Reload Timer
16-bit reload timer operation
Software trigger operation
External trigger operation
External gate input operation
Software trigger operation
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