M34286T2-CPE User’s Manual
2. Setup
R20UT0214EJ0200 Rev.2.00
Page 29 of 70
Sep 16, 2010
(2) Output Waveform of Check Pin WRST
A waveform similar to the one shown in Figure 2.11 is output when executing the WRST instruction that initializes the
watchdog timer. By observing a period in which the check pin (WRST) goes high, you can know when the watchdog
timer is initialized.
Instruction
Cycle
XIN
T1
WRST
instruction
Next
instruction
WRST
(TP3)
T2
T3
T4
T1
T2
Figure 2.11 Output waveform of check pin WRST
