Fujitsu MB90895 Series Hardware Manual page 256

CHAPTER 7 16-bit I/O timer
I Operation Timing of 16-bit Free-run Timer
Figure 7.5-2 shows counter clearing at an overflow.
Counter value
F F F F
BFFF
7 F F F
3 F F F
0 0 0 0
Reset
Over flow interrupt
238
Figure 7.5-2 Counter Clearing at an Overflow
H
H
H
H
H
Over flow
Time