TMP91C824
91C824-207
②
Disabling the timer
Carry of a timer is prohibited when write '0' to PAGER<ENATMR> and can prevent malfunction by CLOCK HOLD
circuit.
During a timer prohibited, CLOCK HOLD circuits holds one sec. carry signal, which is generated from
divider. After becoming timer enable state, output the carry signal to timer and revise time and continue operation.
However, timer is late when timer-disabling state continues for one second or more. During timer disabling, pay
attention with system power is downed. In this case the timer is stopped and time is delayed.
Figure 3.13.5 Flowchart of timer disable
END
START
Disable the timer
Read the timer data
Enable the timer
(note):
This
period
is
within
0.5
second.