PIC18F242 MICROCHIP [Microchip Technology], PIC18F242 Datasheet - Page 193
PIC18F242
Manufacturer Part Number
PIC18F242
Description
28/40-pin High Performance, Enhanced FLASH Microcontrollers with 10-Bit A/D
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F242.pdf
(332 pages)
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18.1
The Low Voltage Detect Control register controls the
operation of the Low Voltage Detect circuitry.
REGISTER 18-1:
© 2006 Microchip Technology Inc.
Control Register
bit 7-6
bit 5
bit 4
bit 3-0
LVDCON REGISTER
bit 7
Unimplemented: Read as '0'
IRVST: Internal Reference Voltage Stable Flag bit
1 = Indicates that the Low Voltage Detect logic will generate the interrupt flag at the
0 = Indicates that the Low Voltage Detect logic will not generate the interrupt flag at the
LVDEN: Low Voltage Detect Power Enable bit
1 = Enables LVD, powers up LVD circuit
0 = Disables LVD, powers down LVD circuit
LVDL3:LVDL0: Low Voltage Detection Limit bits
1111 = External analog input is used (input comes from the LVDIN pin)
1110 = 4.5V - 4.77V
1101 = 4.2V - 4.45V
1100 = 4.0V - 4.24V
1011 = 3.8V - 4.03V
1010 = 3.6V - 3.82V
1001 = 3.5V - 3.71V
1000 = 3.3V - 3.50V
0111 = 3.0V - 3.18V
0110 = 2.8V - 2.97V
0101 = 2.7V - 2.86V
0100 = 2.5V - 2.65V
0011 = 2.4V - 2.54V
0010 = 2.2V - 2.33V
0001 = 2.0V - 2.12V
0000 = Reserved
Note:
Legend:
R = Readable bit
- n = Value at POR
U-0
—
specified voltage range
specified voltage range and the LVD interrupt should not be enabled
LVDL3:LVDL0 modes which result in a trip point below the valid operating voltage
of the device are not tested.
U-0
—
IRVST
R-0
W = Writable bit
’1’ = Bit is set
LVDEN
R/W-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
LVDL3
R/W-0
LVDL2
R/W-1
PIC18FXX2
x = Bit is unknown
LVDL1
R/W-0
DS39564C-page 191
LVDL0
R/W-1
bit 0
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