PIC18F23K22-ESLASHML datasheet(338/496 Pages) MICROCHIP

338 / 496 page

PIC18(L)F2X/4XK22

DS41412C-page 338

Preliminary

 2010 Microchip Technology Inc.

VREFCON0: FIXED VOLTAGE REFERENCE CONTROL REGISTER

R/W-0

R/W-1

U-0

FVREN

FVRST

FVRS<1:0>

—

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

FVREN: Fixed Voltage Reference Enable bit

0 = Fixed Voltage Reference is disabled

1 = Fixed Voltage Reference is enabled

bit 6

FVRST: Fixed Voltage Reference Ready Flag bit

0 = Fixed Voltage Reference output is not ready or not enabled

1 = Fixed Voltage Reference output is ready for use

bit 5-4

FVRS<1:0>: Fixed Voltage Reference Selection bits

00 = Fixed Voltage Reference Peripheral output is off

01 = Fixed Voltage Reference Peripheral output is 1x (1.024V)

10 = Fixed Voltage Reference Peripheral output is 2x (2.048V)(1)

11 = Fixed Voltage Reference Peripheral output is 4x (4.096V)(1)

bit 3-2

Reserved: Read as ‘0’. Maintain these bits clear.

bit 1-0

Unimplemented: Read as ‘0’.

Note 1: Fixed Voltage Reference output cannot exceed VDD.

TABLE 21-1:

SUMMARY OF REGISTERS ASSOCIATED WITH FIXED VOLTAGE REFERENCE

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

on Page

VREFCON0

FVREN

FVRST

FVRS<1:0>

—

338

Legend:

— = unimplemented locations, read as ‘0’. Shaded bits are not used by the FVR module.

PIC18F23K22-E/ML Datasheet(PDF) 338 Page - Microchip Technology

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