Fujitsu MB91460 SERIES FR60 User Manual page 993

• LVSEL: Address 04C4h (Access: Byte, Halfword, Word)
7 6
LVESEL3 LVESEL2
0 0
X X
R/W R/W
(See "Meaning of Bit Attribute Symbols (Page
• Bit7-4: External LV detection voltage level
LVESEL3-LVESEL0
1001
1000
0111
0110
0101
0100
0011
0010
0001
0000
• Bit3-0: Internal LV detection voltage level
LVISEL3-LVISEL0
0111
0110
0101
0100
0011
0010
0001
0000
Note: The set level of the Internal Low Voltage Detection is only effective in case of Main Regulator is
switched off (for decreasing the trigger level when decreasing the sub regulator voltage). Otherwise (with
main regulator on) the default level is applied internally by hardware to the low voltage detection module
(the register setting is not changed in this case and will be applied next time the main regulator is switched
off).
5 4
LVESEL1 LVESEL0 LVISEL3
0 0
X X
R/W R/W
No.10)" for details of the attributes.)
3 2 1
LVISEL2 LVISEL1
0 1 1
X X X
R/W R/W R/W
Trigger level
4.2V +/- 0.1V
4.1V +/- 0.1V
4.0V +/- 0.1V
3.9V +/- 0.1V
3.8V +/- 0.1V
3.7V +/- 0.1V
3.6V +/- 0.1V
3.2V +/- 0.1V
3.0V +/- 0.1V
2.8V +/- 0.1V (initial)
Trigger level
1.6V +/- 0.1V (initial)
1.5V +/- 0.1V
1.4V +/- 0.1V
1.3V +/- 0.1V
1.2V +/- 0.1V
1.1V +/- 0.1V
1.0V +/- 0.1V
0.9V +/- 0.1V
Chapter 51 Low Voltage Reset/Interrupt
0
LVISEL0
Initial value (
1
watchdog reset
Initial value
X
(Software reset)
R/W Attribute
3.Registers
bit
INIT pin input,
)
977