PIC18F2420-I/SOC01 Microchip, PIC18F2420-I/SOC01 Datasheet - Page 245
![no-image](/images/no-image-200.jpg)
PIC18F2420-I/SOC01
Manufacturer Part Number
PIC18F2420-I/SOC01
Description
28 pin, 16 kb flash, 3804 ram, 25 i/o...
Manufacturer
Microchip
Datasheet
1.PIC18F2420-ISOC01.pdf
(412 pages)
- Current page: 245 of 412
- Download datasheet (7Mb)
22.0
PIC18F2420/2520/4420/4520
High/Low-Voltage Detect module (HLVD). This is a pro-
grammable circuit that allows the user to specify both a
device voltage trip point and the direction of change from
that point. If the device experiences an excursion past
the trip point in that direction, an interrupt flag is set. If the
interrupt is enabled, the program execution will branch to
the interrupt vector address and the software can then
respond to the interrupt.
REGISTER 22-1:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
Note 1:
VDIRMAG
R/W-0
HIGH/LOW-VOLTAGE
DETECT (HLVD)
See Table 26-4 for specifications.
VDIRMAG: Voltage Direction Magnitude 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>)
Unimplemented: Read as ‘0’
IRVST: Internal Reference Voltage Stable Flag bit
1 = Indicates that the voltage detect logic will generate the interrupt flag at the specified voltage range
0 = Indicates that the voltage detect logic will not generate the interrupt flag at the specified voltage
HLVDEN: High/Low-Voltage Detect Power Enable bit
1 = HLVD enabled
0 = HLVD disabled
HLVDL<3:0>: Voltage Detection Limit bits
1111 = External analog input is used (input comes from the HLVDIN pin)
1110 = Maximum setting
.
.
.
0000 = Minimum setting
range and the HLVD interrupt should not be enabled
U-0
—
HLVDCON: HIGH/LOW-VOLTAGE DETECT CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
devices
IRVST
R-0
Advance Information
have
PIC18F2420/2520/4420/4520
HLVDEN
R/W-0
a
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
HLVDL3
R/W-0
The
(Register 22-1) completely controls the operation of the
HLVD module. This allows the circuitry to be “turned
off” by the user under software control, which
minimizes the current consumption for the device.
The block diagram for the HLVD module is shown in
Figure 22-1.
(1)
High/Low-Voltage
HLVDL2
R/W-1
(1)
x = Bit is unknown
HLVDL1
Detect
R/W-0
(1)
DS39631E-page 243
Control
HLVDL0
R/W-1
register
bit 0
(1)
Related parts for PIC18F2420-I/SOC01
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC18F2420-I/ML](/photos/6/81/68120/150-28-qfn_tmb.jpg)
Part Number:
Description:
IC PIC MCU FLASH 8KX16 28QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F2420-E/SO](/photos/6/59/65909/150-28-soic_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 28SOIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F2420-I/SO](/photos/6/59/65909/150-28-soic_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 28SOIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F2420](/images/no-image3.png)
Part Number:
Description:
28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
Manufacturer:
MICROCHIP [Microchip Technology]
Datasheet:
![PIC18F2420-I/SP](/photos/6/59/65908/150-28-dip_tmb.jpg)
Part Number:
Description:
IC MCU FLASH 8KX16 28-DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F2420-E/ML](/photos/6/81/68120/150-28-qfn_tmb.jpg)
Part Number:
Description:
IC PIC MCU FLASH 8KX16 28QFN
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F2420-E/SP](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
28 PIN, 16 KB STD FLASH, 3804 RAM, 25 I/O, PB FREE,
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F24](/images/no-image3.png)
Part Number:
Description:
28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
Manufacturer:
MICROCHIP [Microchip Technology]
Datasheet:
![MA300015](/photos/8/96/89623/ma300015_tmb.jpg)
Part Number:
Description:
MODULE PLUG-IN DSPIC30F 80QFP
Manufacturer:
Microchip Technology
Datasheet:
![MA180021](/photos/8/96/89639/ma180021_tmb.jpg)
Part Number:
Description:
MODULE PLUG-IN 18F87J50 FS USB
Manufacturer:
Microchip Technology
Datasheet:
![AC164131](/photos/8/96/89652/ac164131__tmb.jpg)
Part Number:
Description:
BOARD DAUGHTER USB PICTAIL PLUS
Manufacturer:
Microchip Technology
Datasheet:
![MA330024](/photos/8/98/89858/ma330024_tmb.jpg)
Part Number:
Description:
MODULE PLUG-IN DSPIC33F 100TQFP
Manufacturer:
Microchip Technology
Datasheet:
![AC164129](/photos/9/3/90374/ac164129_tmb.jpg)
Part Number:
Description:
CARD DAUGHTER AUDIO PICTAIL PLUS
Manufacturer:
Microchip Technology
Datasheet: