PIC18CXX2_13 Datasheet, PDF (174/304 Pages) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

PIC18CXX2
FIGURE 17-2:
LOW VOLTAGE DETECT (LVD) BLOCK DIAGRAM
VDD
LVDIN
LVD Control
Register
LVDIF
LVDEN
Internally Generated
Nominal Reference Voltage
1.2V
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 17-3).
This gives flexibility, because it allows a user to config-
ure the Low Voltage Detect interrupt to occur at any
voltage in the valid operating range.
FIGURE 17-3:
LOW VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
VDD
VDD
LVD Control
Register
Externally Generated
Trip Point
LVDIN
LVDEN
LVD
VxEN
BODEN
EN
BGAP
DS39026D-page 174
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