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Section 9 Timers
Rev. 6.00 Aug 04, 2006 page 273 of 680
REJ09B0145-0600
9.3.4
Timer C Operation States
Table 9.7 summarizes the timer C operation states.
Table 9.7
Timer C Operation States
Operation Mode
Reset
Active
Sleep
Watch
Sub-
active
Sub-
sleep
Standby
Module
Standby
TCC
Interval
Reset
Functions Functions Halted
Functions/
Halted
*
Functions/
Halted
*
Halted
Halted
Auto reload Reset
Functions Functions Halted
Functions/
Halted
*
Functions/
Halted
*
Halted
Halted
TMC
Reset
Functions Retained Retained Functions Retained Retained Retained
Note:
*
When
φ
w/4 is selected as the TCC internal clock in active mode or sleep mode, since
the system clock and internal clock are mutually asynchronous, synchronization is
maintained by a synchronization circuit. This results in a maximum count cycle error of
1/
φ
(s). When the counter is operated in subactive mode or subsleep mode, either
select
φ
w/4 as the internal clock or select an external clock. The counter will not
operate on any other internal clock. If
φ
w/4 is selected as the internal clock for the
counter when
φ
w/8 has been selected as subclock
φ
SUB
, the lower 2 bits of the counter
operate on the same cycle, and the operation of the least significant bit is unrelated to
the operation of the counter.
Содержание H8/38342
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