PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 264

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
FIGURE 21-2:
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
FIGURE 21-3:
DS39616B-page 262
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
EN
Preliminary
V
DD
pin, LVDIN (Figure 21-3). 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
 2003 Microchip Technology Inc.
LVDIF
LVDEN
LVD