PIC18F6525_13 Datasheet, PDF (254/400 Pages) Microchip Technology – 64/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with A/D

PIC18F6525/6621/8525/8621
FIGURE 23-2:
LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM
VDD
LVDIN
LVDL3:LVDL0
LVDCON
Register
LVDIF
LVDEN
Internally Generated
Reference Voltage
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 23-3). 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 23-3:
LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
VDD
VDD
LVDL3:LVDL0
LVDCON
Register
Externally Generated
Trip Point
LVDIN
LVDEN
LVD
VxEN
BODEN
EN
BGAP
DS39612C-page 254
 2003-2013 Microchip Technology Inc.