PIC16F707-ESLASHML datasheet(90/284 Pages) MICROCHIP

90 / 284 page

PIC16F707/PIC16LF707

DS41418A-page 90

Preliminary

 2010 Microchip Technology Inc.

FVRCON: FIXED VOLTAGE REFERENCE REGISTER

R-q

R/W-0/0

FVRRDY(1)

FVREN

—

CDAFVR1(2) CDAFVR0(2)

ADFVR1(2)

ADFVR0(2)

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

q = Value depends on condition

bit 7

FVRRDY: Fixed Voltage Reference Ready Flag bit(1)

0 = Fixed Voltage Reference output is not active or stable

1 = Fixed Voltage Reference output is ready for use

bit 6

FVREN: Fixed Voltage Reference Enable bit

0 = Fixed Voltage Reference is disabled

1 = Fixed Voltage Reference is enabled

bit 5-4

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

bit 3-2

CDAFVR<1:0>: Cap Sense and D/A Converter Fixed Voltage Reference Selection bit(2)

00 = CSM and D/A Converter Fixed Voltage Reference Peripheral output is off.

01 = CSM and D/A Converter Fixed Voltage Reference Peripheral output is 1x (1.024V)

10 = CSM and D/A Converter Fixed Voltage Reference Peripheral output is 2x (2.048V)

11 = CSM and D/A Converter Fixed Voltage Reference Peripheral output is 4x (4.096V)

bit 1-0

ADFVR<1:0>: A/D Converter Fixed Voltage Reference Selection bit(2)

00 = A/D Converter Fixed Voltage Reference Peripheral output is off.

01 = A/D Converter Fixed Voltage Reference Peripheral output is 1x (1.024V)

10 = A/D Converter Fixed Voltage Reference Peripheral output is 2x (2.048V)

11 = A/D Converter Fixed Voltage Reference Peripheral output is 4x (4.096V)

Note 1:

FVRRDY is always ‘1’ on PIC16F707 devices.

Fixed Voltage Reference output cannot exceed VDD.

TABLE 10-1:

REGISTERS ASSOCIATED WITH VOLTAGE REFERENCE

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

POR, BOR

Value on

all other

Resets

FVRCON FVRRDY FVREN

Reserved Reserved CDAFVR1 CDAFVR0 ADFVR1

ADFVR0 q000 0000 q000 0000

Legend:

Shaded cells are not used by the voltage reference module.

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