Fujitsu F2MC-8FX Hardware Manual page 271

Figure 16.7-2 Operation of Interval Timer Function in 8-bit Mode (Timer 0)
Counter value FF
H
80
H
00
H
T00/01DR
value (FF )
H
IF bit
STA bit
Timer output pin
For initial value "1" on activation
*: If the T00/01DR data register value is modified during operation, the new value is used from the next active cycle.
Timer cycle
T00/01DR value modified (FF
Cleared
by program
Reactivated
Automatically cleared
Inverted
CHAPTER 16 8/16-BIT COMPOSITE TIMER
80 )*
H H
Reactivated
Automatically cleared
Reactivated with output initial value unchanged ("0")
Time
257