PIC18F258-ESLASHLSQTP datasheet(262/402 Pages) MICROCHIP

Part #	PIC18F258-E/LSQTP

Description	28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module

PDF	402 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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262 / 402 page

PIC18FXX8

DS41159E-page 260

FIGURE 23-2:

LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM

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).

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.

FIGURE 23-3:

LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM

LVDIF

VDD

LVDEN

LVDCON

Internally Generated

Reference Voltage,

LVDIN

LVDL3:LVDL0

1.2V Typical

LVD

BGAP

BODEN

LVDEN

VxEN

LVDIN

VDD

Externally Generated

Trip Point

LVDL3:LVDL0

LVDCON

PIC18F258-E/LSQTP Datasheet(PDF) 262 Page - Microchip Technology