PIC18F6585 Datasheet, PDF (272/496 Pages) Microchip Technology – 64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module

PIC18F6585/8585/6680/8680
FIGURE 22-2:
LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM
VDD
LVDIN
LVD3:LVD0
LVDCON
Register
LVDIF
LVDEN
Internally Generated
Reference Voltage
(Parameter #D423)
The LVD module has an additional feature that allows
the user to supply the trip voltage to the module from an
external source. This mode is enabled when bits
LVDL3:LVDL0 are set to ‘1111’. In this state, the com-
parator input is multiplexed from the external input pin,
LVDIN (Figure 22-3). This gives users flexibility
because it allows them to configure the Low-Voltage
Detect interrupt to occur at any voltage in the valid
operating range.
FIGURE 22-3:
LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
VDD
VDD
LVD3:LVD0
LVDCON
Register
Externally Generated
Trip Point
LVDIN
LVDEN
LVD
VxEN
BODEN
EN
BGAP
DS30491C-page 270
 2004 Microchip Technology Inc.