Fujitsu MB90460 Series Hardware Manual page 266

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External trigger operation
When a valid edge (rising, falling and both edges can be selected) is input to the TIN pin, the counter is
started. Figure 12.6-5 shows external trigger operation in reload mode.
Figure 12.6-5 Counting in Reload Mode (External Trigger Operation)
Count clock
Data load signal
CNTE bit
T: Machine cycle
* It takes 2T to 2.5T time from trigger input to loading of the reload data.
Note:
Specify 2/φ or more for the width of the trigger pulse input to the TIN0/TIN1 pin.
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Gate input operation
While a valid level (H and L levels can be selected) is input to the TIN0/TIN1 pin, counting is done.
Figure 12.6-6 shows gate input in reload mode.
Figure 12.6-6 Count Operation in Reload Mode (Software Trigger and Gate Input Operation)
Count clock
Counter
Data load signal
CNTE bit
TRG bit
TIN pin
TO pin
T: Machine cycle
* It takes 1T time from trigger input to loading of the reload data.
Note:
Specify 2/φ or more for the width of the trigger pulse input to the TIN0/TIN1 pin.
Reload data
Counter
UF bit
TIN pin
TO pin
Reload data
Reload data
Reload data
Reload data
CHAPTER 12 16-BIT RELOAD TIMER
Reload data
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