Datasheet

PIC24FJ128GA310 FAMILY
DS39996F-page 332  2010-2011 Microchip Technology Inc.
REGISTER 28-1: HLVDCON: HIGH/LOW-VOLTAGE DETECT CONTROL REGISTER
R/W-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0
HLVDEN
—LSIDL— — — — —
bit 15 bit 8
R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0
VDIR BGVST IRVST
— HLVDL3 HLVDL2 HLVDL1 HLVDL0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15 HLVDEN: High/Low-Voltage Detect Power Enable bit
1 = HLVD is enabled
0 = HLVD is disabled
bit 14 Unimplemented: Read as ‘0’
bit 13 LSIDL: HLVD Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation in Idle mode
bit 12-8 Unimplemented: Read as ‘0’
bit 7 VDIR: Voltage Change Direction Select bit
1 = Event occurs when voltage equals or exceeds trip point (HLVDL<3:0>)
0 = Event occurs when voltage equals or falls below trip point (HLVDL<3:0>)
bit 6 BGVST: Band Gap Voltage Stable Flag bit
1 = Indicates that the band gap voltage is stable
0 = Indicates that the band gap voltage is unstable
bit 5 IRVST: Internal Reference Voltage Stable Flag bit
1 = Internal reference voltage is stable; the High-Voltage Detect logic generates the interrupt flag at the
specified voltage range
0 = Internal reference voltage is unstable; the High-Voltage Detect logic will not generate the interrupt
flag at the specified voltage range and the HLVD interrupt should not be enabled
bit 4 Unimplemented: Read as ‘0’
bit 3-0 HLVDL<3:0>: High/Low-Voltage Detection Limit bits
1111 = External analog input is used (input comes from the LVDIN pin)
1110 = Trip point 1
(1)
1101 = Trip point 2
(1)
1100 = Trip point 3
(1)
.
.
.
0100 = Trip point 11
(1)
00xx = Unused
Note 1:
For the actual trip point, see Section 32.0 “Electrical Characteristics”.