192
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 øw/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/ø (s). When
the counter is operated in subactive mode or subsleep mode, either select øw/4 as the
internal clock or select an external clock. The counter will not operate on any other internal
clock. If øw/4 is selected as the internal clock for the counter when øw/8 has been selected
as subclock ø
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.