Reset Source Decision Register (Lvdrf) - Renesas H8 Series Hardware Manual

Section 17 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits
17.2.3

Reset Source Decision Register (LVDRF)

LVDRF indicates sources of resets.
Bit Bit Name

7 to 2
1 PRST
0 WRST
Notes: 1. The initial value depends on the condition when the PRST bit is set or cleared.
2. The initial value depends on the condition when the WRST bit is set or cleared.
Rev. 1.00 Aug. 28, 2006 Page 294 of 400
REJ09B0268-0100
Initial
Value R/W Description
 
Reserved
The read value is undefined and these bits cannot be
modified.
1
R/W POR/LVDR Detection
*
[Setting conditions]
•
•
[Clearing condition]
•
2
R/W WDT Reset Detection
*
[Setting condition]
•
[Clearing conditions]
•
•
•
•
When a power-on reset has occurred
When an LVDR has occurred
When writing 0
When a reset by the WDT has occurred
When a power-on reset has occurred
When an LVDR has occurred
When an reset signal input on the external pin has
asserted
When writing 0