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H8SX/1663R データシート(PDF) 140 Page - Renesas Technology Corp

部品番号 H8SX/1663R
部品情報  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX/1663R データシート(HTML) 140 Page - Renesas Technology Corp

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Section 5 Voltage Detection Circuit (LVD)
Rev. 2.00 Sep. 24, 2008 Page 108 of 1468
REJ09B0412-0200
Bit
Bit Name
Initial Value
R/W
Description
6 to 3
—
All 0
R/W
Reserved
These bits are always read as 0 and the write
value should always be 0.
2
LVDF
Undefined
R/(W)*
LVD Flag
This bit indicates that the voltage detection circuit
has detected a low voltage (Vcc at or below
Vdet).
[Setting condition]
Vcc falling to or below Vdet.
[Clearing condition]
•
After Vcc has exceeded Vdet and the
specified stabilization period has elapsed,
writing 0 to the bit after reading it as 1.
•
Generation of a pin reset or power-on reset.
1
—
Undefined
R/W
Reserved
The write value should always be 0.
0
PORF
Undefined
R
Power-on Reset Flag
This bit indicates that a power-on reset has been
generated.
[Setting condition]
Generation of a power-on reset
[Clearing condition]
Generation of a pin reset
Note:
*
To clear the flag, only 0 should be written to.



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