
PIC18F2450/4450
2006 Microchip Technology Inc.
Advance Information
DS39760A-page 187
17.6
Operation During Sleep
When enabled, the HLVD circuitry continues to operate
during Sleep. If the device voltage crosses the trip
point, the HLVDIF bit will be set and the device will
wake-up from Sleep. Device execution will continue
from the interrupt vector address if interrupts have
been globally enabled.
17.7
Effects of a Reset
A device Reset forces all registers to their Reset state.
This forces the HLVD module to be turned off.
TABLE 17-1:
REGISTERS ASSOCIATED WITH HIGH/LOW-VOLTAGE DETECT MODULE
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset
Values
on page
HLVDCON
VDIRMAG
—
IRVST
HLVDEN
HLVDL3
HLVDL2
HLVDL1
HLVDL0
INTCON
GIE/GIEH PEIE/GIEL
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
PIR2
OSCFIF
—
USBIF
—
—HLVDIF
—
PIE2
OSCFIE
—
USBIE
—
—HLVDIE
—
IPR2
OSCFIP
—
USBIP
—
—HLVDIP
—
Legend: — = unimplemented, read as ‘0’. Shaded cells are unused by the HLVD module.