Table A.1:Watchdog Timer Registers - Advantech PCA-6009 User Manual

Table A.1: Watchdog Timer Registers
Address of register (2E)
Read/Write
87 (hex)
07 (hex)
30 (hex)
F5 (hex)
Write 0 to bit 3: set sec-
ond as counting unit.
[default]
Write 1 to bit 3: set
minute as counting unit
F6 (hex)
PCA-6009 User Manual
Attribute
Value (2F) and
description
-----
write
write
write
write
80
Write this address to I/O
address port 2E (hex) twice
to unlock theW83627HG
Write 08 (hex) to select reg-
ister of watchdog timer.
Write 01 (hex) to enable
the function of the watch-
dog timer. Disabled is set
as default.
Set seconds or minutes as
units for the timer.
0: stop timer [default]
01~FF (hex): The amount
of the count, in seconds or
minutes, depends on the
value set in register F5
(hex). This number decides
how long the watchdog
timer waits for strobe
before generating an inter-
rupt or reset signal. Writing
a new value to this register
can reset the timer to count
with the new value.