209
is updated from the matching value to a new value). When TCF matches OCRF, the compare
match signal is not generated until the next counter clock.
7.
Timer F operation modes
Timer F operation modes are shown in table 9-10.
Table 9-10
Timer F Operation Modes
Module
Operation Mode
Reset
Active
Sleep
Watch
Subactive
Subsleep
Standby
Standby
TCF
Reset
Functions
Functions Functions/
Functions/
Functions/
Halted
Halted
Halted
*
Halted
*
Halted
*
OCRF
Reset
Functions
Held
Held
Functions
Held
Held
Held
TCRF
Reset
Functions
Held
Held
Functions
Held
Held
Held
TCSRF
Reset
Functions
Held
Held
Functions
Held
Held
Held
Note:
*
When ø
w
/4 is selected as the TCF 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, watch mode, or subsleep mode, ø
w
/4 must be
selected as the internal clock. The counter will not operate if any other internal clock is
selected.