PIC18F248-E/L MICROCHIP [Microchip Technology], PIC18F248-E/L Datasheet - Page 262

• Manufacturer Part Number: PIC18F248-E/L
• Description: 28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 23-2:
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
LVDIN to one input of the comparator (Figure 23-3).
FIGURE 23-3:
DS41159E-page 260
PIC18FXX8
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
EN
Internally Generated
Reference Voltage,
1.2V Typical
V
DD
LVDL3:LVDL0
The other input is connected to the internally generated
voltage reference (parameter #D423 in Section 27.2
“DC Characteristics”). 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.
LVDL3:LVDL0
VxEN
BODEN
LVDCON
Register
BGAP
LVDCON
Register
© 2006 Microchip Technology Inc.
LVDIF
LVDEN
LVD