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R01UH0336EJ0102 Rev.1.02
Page 395 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 12 Window Watchdog Timer A (WDTA)
12.4.2
WDTA Registers Details
(1)
WDTA Enable Register (WDTAnWDTE)
This register is the WDTA start control and trigger register.
WDTA trigger
Writing AC
H
to this register restarts the counter. Refer to Section 12.3.2, WDTA
Trigger, for details.
Do not write a value other than AC
H
. Otherwise, an error is detected.
Access
This register can be read/written in 8-bit units.
Address
<WDTAn_base> + 0000
H
Initial value
2C
H
This register is initialized by any reset sources.
7
6
5
4
3
2
1
0
WDTAn
RUN
0
1
0
1
1
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 12-7
WDTAnWDTE Register Contents
Bit Position
Bit Name
Function
7
WDTAnRUN
Enables/disables the WDTAn.
0: WDTAn disable
1: WDTAn enabled
Since the WDTA cannot be stopped once it was started, this bit can only be
cleared by a reset.