Registers, 1 lv detection control registers, Registers 3.1 lv detection control registers – FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 51 Low Voltage Reset/Interrupt
3.Registers
3. Registers
3.1 LV Detection Control Registers
Controls the low voltage detection function.
• LVDET: Address 04C5h (Access: Byte, Halfword, Word)
Meaning of Bit Attribute Symbols (Page No.10)
” for details of the attributes.)
• Bit7: Reserved bit. The read value is always ‘0’.
• Bit6: Low-Voltage Interrupt Source selection.
• Bit5: External Low-Voltage Detection Power-Down.
• Bit4: Internal Low-Voltage Detection Power-Down.
• Bit3: Low-Voltage Reset Enable.
• Bit2: Reserved bit.
• Bit1: Low-Voltage Interrupt Enable.
• Bit0: Low-Voltage Interrupt Flag.
7
6
5
4
3
2
1
0
bit
-
LVSEL
LVEPD
LVIPD
LVREN
-
LVIEN
LVIRQ
-
0
0
0
0
-
0
0
Initial value (
INIT pin input,
watchdog reset
)
-
X
X
X
X
-
0
0
Initial value
(Software reset)
R0/W0
R/W
R/W
R/W
R/W
R0/W0
R/W
R/W
Attribute
LVSEL
Function
0
Internal (VDD) LV detection used for LV-Int and LV-Reset [Initial value]
1
External (VDD5) LV detection used for LV-Int and LV-Reset
LVEPD
Function
0
External (VDD5) LV detection active [Initial value]
1
External (VDD5) LV detection power down
LVIPD
Function
0
Internal (VDD) LV detection active [Initial value]
1
Internal (VDD) LV detection power down
LVREN
Function
0
Low Voltage Reset Disabled [Initial value]
1
Low Voltage Reset Enabled
LVIEN
Function
0
Low Voltage Interrupt Disabled [Initial value]
1
Low Voltage Interrupt Enabled
LVIRQ
Function
0
Low Voltage Interrupt Flag (no interrupt request) [Initial value]
1
Low Voltage Interrupt Flag (interrupt requested)