7721 Datasheet, PDF (136/577 Pages) List of Unclassifed Manufacturers – H Bridge Power Module

TIMER A
8.3 Timer mode
[Precautions for timer mode]
By reading the timer Ai register, the counter value can be read out at any timing. However, if the timer Ai
register is read at the reload timing shown in Figure 8.3.7, 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
(Hex.)
2 1 0 n n–1
Read value
(Hex.)
2 1 0 FFFF n – 1
n = Reload register’s contents
Fig. 8.3.7 Reading timer Ai register
Time
7721 Group User’s Manual
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