PIC18F2221_1 Datasheet, PDF (257/402 Pages) Microchip Technology – Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2221/2321/4221/4321 FAMILY
23.6 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.
23.7 Effects of a Reset
A device Reset forces all registers to their Reset state.
This forces the HLVD module to be turned off.
TABLE 23-1: 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 56
INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF
55
PIR2
OSCFIF CMIF
—
EEIF
BCLIF HLVDIF TMR3IF CCP2IF
58
PIE2
OSCFIE CMIE
—
EEIE BCLIE HLVDIE TMR3IE CCP2IE 58
IPR2
OSCFIP CMIP
—
EEIP BCLIP HLVDIP TMR3IP CCP2IP 58
Legend: — = unimplemented, read as ‘0’. Shaded cells are unused by the HLVD module.
© 2009 Microchip Technology Inc.
DS39689F-page 257