Fujitsu MB90460 Series Hardware Manual page 268

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External trigger operation
When a valid edge (rising, falling, and both edges can be selected) is input to the TIN0/TIN1 pin, the
counter is started. Figure 12.6-8 shows external trigger operation in single-shot mode
Figure 12.6-8 Specify 2/f or more for the Width of the Trigger Pulse Input to the TIN0/TIN1 Pin.
Count clock
Counter
Data load signal
UF bit
CNTE bit
TIN bit
TO pin
T: Machine cycle
* It takes 2T to 2.5T time from external 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 12.6-9 shows gate input operation in single-shot mode
Figure 12.6-9 Count Operation in Single-shot Mode (Software Trigger and Gate Input Operation)
Count clock
Counter
Data load signal
UF bit
CNTE bit
TRG bit
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
Wait for trigger input
Reload data
T*
Wait for trigger input
CHAPTER 12 16-BIT RELOAD TIMER
Reload data
Reload data
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