PIC16F7X7
FIGURE 15-4:
LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM
LVDIN
VDD
LVD Control
Register
LVDIF
Internally Generated
LVDEN
Reference Voltage
1.2V
The LVD module has an additional feature that allows
the user to supply the sense voltage to the module
from an external source. This mode is enabled when
bits LVDL3:LVDL0 are set to ‘1111’. In this state, the
comparator input is multiplexed from the external input
pin, LVDIN (Figure 15-5). 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 15-5:
LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
VDD
VDD
LVD Control
Register
LVDIN
LVDEN
Externally Generated
Trip Point
LVD
LVDEN
BODEN
EN
BGAP
2004 Microchip Technology Inc.
DS30498C-page 175
MICROCHIP [ MICROCHIP ]
