Fujitsu F2MC-16LX Hardware Manual page 342

CHAPTER 16 16-BIT RELOAD TIMER
❍ External trigger operation
When a valid edge (leading, trailing, or both can be selected) is input to the TIN pins, the
counter will start operation. Figure 16.3-8 "Count operation in one-shot mode (external trigger
operation)" shows the external trigger operation in one-shot mode.
Figure 16.3-8 Count operation in one-shot mode (external trigger operation)
Count clock
Counter
Data load signal
UF bit
CNTE bit
TIN bit
2T to 2.5T
TOT pin
T: Machine cycle
*1: It takes 2T to 2.5T from trigger input to loading reload data.
Note:
The trigger pulse width input to the TIN pin shall be 2/φ or more.
❍ Gate input operation
When a valid level ("H" and "L" level can be selected) is input to the TIN pin, the counter starts
operation. Figure 16.3-9 "Count operation in one-shot mode (software trigger, gate input
operation)" shows the gate input operation in one-shot mode.
Figure 16.3-9 Count operation in one-shot mode (software trigger, gate input operation)
Count clock
Counter
Data load signal
UF bit
CNTE bit
TRG bit
TOT pin
Machine cycle
T :
It takes 1T from trigger input to loading reload data.
*1:
Note:
The trigger pulse width input to the TIN pin shall be 2/φ or more.
326
Reload
-1 0000 FFFF
H H
data
Waiting for start trigger input
Reload
-1 0000 FFFF
H H
data
Waiting for start trigger input
Reload
-1 0000 FFFF
H H
data
Reload
-1 0000 FFFF
H H
data