PIC18F242 MICROCHIP [Microchip Technology], PIC18F242 Datasheet - Page 192

• Manufacturer Part Number: PIC18F242
• Description: 28/40-pin High Performance, Enhanced FLASH Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX2
FIGURE 18-2:
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,
FIGURE 18-3:
DS39564C-page 190
Externally Generated
Trip Point
LVDEN
LOW VOLTAGE DETECT (LVD) BLOCK DIAGRAM
LOW VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
V
DD
LVDIN
V
DD
LVDIN
Internally Generated
Reference Voltage
1.2V Typical
EN
V
DD
LVDIN (Figure 18-3). 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.
VxEN
BODEN
LVD Control
–
+
Register
BGAP
LVD Control
Register
© 2006 Microchip Technology Inc.
LVDIF
–
+
LVDEN
LVD