TIMER A
[Precautions for timer mode]
[Precautions for timer mode]
1. Each of timers A3, A5 to A8 is not equipped with the gate function and pulse output function.
2. By reading the timer Ai register, the counter value can be read out at arbitrary timing. However, if the
timer Ai register is read at the reload timing shown in Figure 7.3.6, the value “FFFF16” is read out. If
reading is performed in the period from when a value is set into the timer Ai register with the counter
stopped until the counter starts counting, the set value is correctly read out.
Reload
Counter value
2
2
1
0
0
n
n – 1
(Hex.)
Read value
(Hex.)
n – 1
1
FFFF
Time
n : Reload register’s contents
Fig. 7.3.6 Reading timer Ai register
7906 Group User’s Manual Rev.2.0
7-17
RENESAS [ RENESAS TECHNOLOGY CORP ]
