PIC18C658 MICROCHIP [Microchip Technology], PIC18C658 Datasheet - Page 248

• Manufacturer Part Number: PIC18C658
• Description: High-Performance Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18CXX8
21.1
The Low Voltage Detect Control register (Register 21-1)
controls the operation of the Low Voltage Detect
circuitry.
REGISTER 21-1:
DS30475A-page 248
bit 7-6
bit 5
bit 4
bit 3-0
Control Register
LVDCON REGISTER
Legend:
R = Readable bit
- n = Value at POR
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 specified
0 = Indicates that the Low Voltage Detect logic will not generate the interrupt flag at the spec-
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 min - 4.77V max.
1101 = 4.2V min - 4.45V max.
1100 = 4.0V min - 4.24V max.; Reserved on PIC18CXX8
1011 = 3.8V min - 4.03V max.; Reserved on PIC18CXX8
1010 = 3.6V min - 3.82V max.; Reserved on PIC18CXX8
1001 = 3.5V min - 3.71V max.; Reserved on PIC18CXX8
1000 = 3.3V min - 3.50V max.; Reserved on PIC18CXX8
0111 = 3.0V min - 3.18V max.; Reserved on PIC18CXX8
0110 = 2.8V min - 2.97V max.; Reserved on PIC18CXX8
0101 = 2.7V min - 2.86V max.; Reserved on PIC18CXX8
0100 = 2.5V min - 2.65V max.; Reserved on PIC18CXX8
0011 = Reserved on PIC18CXX8 and PIC18LCXX8
0010 = Reserved on PIC18CXX8 and PIC18LCXX8
0001 = Reserved on PIC18CXX8 and PIC18LCXX8
0000 = Reserved on PIC18CXX8 and PIC18LCXX8
Note:
U-0
—
voltage range
ified 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
—
Advanced Information
IRVST
R-0
’1’ = Bit is set
W = Writable bit
LVDEN
R/W-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
LVDL3
R/W-0
LVDL2
R/W-1
2000 Microchip Technology Inc.
x = Bit is unknown
LVDL1
R/W-0
LVDL0
R/W-1
bit 0