7721 Datasheet, PDF (180/577 Pages) List of Unclassifed Manufacturers – H Bridge Power Module

TIMER B
9.3 Timer mode
[Precautions for timer mode]
While counting is in progress, by reading the timer Bi register, the counter value can be read out at any
timing. However, if the timer Bi register is read at the reload timing shown in Figure 9.3.4, the 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
(Hex.)
2 1 0 n n–1
Read value
(Hex.)
2 1 0 FFFF n – 1
n = Reload register’s contents
Time
Fig. 9.3.4 Reading timer Bi register
7721 Group User’s Manual
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