TIMER B
[Precautions for event counter mode]
[Precautions for event counter mode]
While counting is in progress, by reading the timer Bi register, the counter value can be read out at
arbitrary timing. However, if the timer Bi register is read at the reload timing shown in Figure 8.4.5, a value
“FFFF16” is read out. If reading is performed in the period from when a value is set into the timer Bi register
with the counter stopped until the counter starts counting, the set value is correctly read out.
Reload
Counter value
2
2
1
1
0
0
n
n – 1
(Hex.)
Read value
(Hex.)
n – 1
FFFF
Time
n = Reload register’s contents
Fig. 8.4.5 Reading timer Bi register
7906 Group User’s Manual Rev.2.0
8-18
RENESAS [ RENESAS TECHNOLOGY CORP ]
