PIC18F010T View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'PIC18F010T' PDF : 176 Pages View PDF
PIC18F010/020
Figure 11-2 shows the block diagram for the LVD mod-
ule. A comparator uses an internally generated refer-
ence voltage as the set point. When the selected tap
output of the device voltage crosses the set point (is
lower than), the LVDIF bit is set.
Each node in the resister divider represents a “trip
point” voltage. The “trip point” voltage is the minimum
supply voltage level at which the device can operate
before the LVD module asserts an interrupt. When the
supply voltage is equal to the trip point, the voltage
tapped off of the resistor array is equal to the voltage
generated by the internal voltage reference module.
The comparator then generates an interrupt signal, set-
ting the LVDIF bit. This voltage is software program-
mable to any one of 16 values (see Figure 11-2). The
trip point is selected by programming the
LVDL3:LVDL0 bits (LVDCON<3:0>).
FIGURE 11-2:
LOW VOLTAGE DETECT (LVD) BLOCK DIAGRAM
VDD
LVDIN
LVD Control
Register
LVDIF
LVDEN
Internally Generated
Reference Voltage
DS41142A-page 78
Preliminary
2001 Microchip Technology Inc.
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