Fujitsu MB90460 Series Hardware Manual page 468

Figure 16.6-3 Pulse-width Measurement Operation (Single Measurement Mode, H-width Measurement
PWC input
measured pulse
Timer count value
FFFF
H
0000
H
Start of
measurement
Figure 16.6-4 Pulse-width Measurement Operation (Continuous Measurement Mode, H-width
PWC input
measured pulse
Timer count value
FFFF
H
Timer
clears
0000
H
Start of
measurement
*: The timer value during this period is not guaranteed (a timer overflow may result in OVIR being set)
Timer
clears
Timer
starts
EDIR flag setting (termination of measurement)
Measurement Mode)
(The solid line indicates the timer count value)
Data transfer
to PWC
Timer clear
Timer OVIR flag
starts setting
EDIR flag setting
(termination of measurement)
*
Mode)
(The solid line indicates the timer count value)
Timer
stops
Timer OVIR flag
starts setting
EDIR flag setting
CHAPTER 16 PWC Timer
Time
Data transfer
to PWC
Time
449