PIC18F2420/2520/4420/4520
22.6 Operation During Sleep
22.7 Effects of a Reset
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.
A device Reset forces all registers to their Reset state.
This forces the HLVD module to be turned off.
TABLE 22-1: REGISTERS ASSOCIATED WITH HIGH/LOW-VOLTAGE DETECT MODULE
Reset
Values
on Page
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
HLVDCON VDIRMAG
—
IRVST
HLVDEN HLVDL3 HLVDL2 HLVDL1 HLVDL0
50
49
52
52
52
INTCON
PIR2
GIE/GIEH PEIE/GIEL TMR0IE
INT0IE
EEIF
RBIE
BCLIF
BCLIE
BCLIP
TMR0IF
HLVDIF
INT0IF
RBIF
OSCFIF
OCSFIE
OSCFIP
CMIF
CMIE
CMIP
—
—
—
TMR3IF CCP2IF
PIE2
EEIE
EEIP
HLVDIE TMR3IE CCP2IE
HLVDIP TMR3IP CCP2IP
IPR2
Legend: — = unimplemented, read as ‘0’. Shaded cells are unused by the HLVD module.
© 2008 Microchip Technology Inc.
Advance Information
DS39631E-page 247
MICROCHIP [ MICROCHIP ]
