PIC16F1826-I View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1826-I

18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC16F/LF1826/27

REGISTER 14-1: FVRCON: FIXED VOLTAGE REFERENCE CONTROL REGISTER

R/W-0/0

FVREN

bit 7

R-q/q

FVRRDY(1)

R/W-0/0

Reserved

R/W-0/0

Reserved

R/W-0/0

R/W-0/0

CDAFVR<1:0>

R/W-0/0

R/W-0/0

ADFVR<1:0>

bit 0

Legend:

R = Readable bit

u = Bit is unchanged

‘1’ = Bit is set

W = Writable bit

x = Bit is unknown

‘0’ = Bit is cleared

U = Unimplemented bit, read as ‘0’

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

q = Value depends on condition

bit 7

bit 6

bit 5-4

bit 3-2

bit 1-0

FVREN: Fixed Voltage Reference Enable bit

0 = Fixed Voltage Reference is disabled

1 = Fixed Voltage Reference is enabled

FVRRDY: Fixed Voltage Reference Ready Flag bit(1)

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

1 = Fixed Voltage Reference output is ready for use

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

CDAFVR<1:0>: Comparator and DAC Fixed Voltage Reference Selection bit

00 = Comparator and DAC Fixed Voltage Reference Peripheral output is off.

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

10 = Comparator and DAC Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)

11 = Comparator and DAC Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)

ADFVR<1:0>: ADC Fixed Voltage Reference Selection bit

00 = ADC Fixed Voltage Reference Peripheral output is off.

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

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

11 = ADC Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)

Note 1: FVRRDY is always ‘1’ on devices with LDO (PIC16F1826/27).

2: Fixed Voltage Reference output cannot exceed VDD.

TABLE 14-1: SUMMARY OF REGISTERS ASSOCIATED WITH THE FVR MODULE

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

FVRCON

FVREN FVRRDY Reserved Reserved CDAFVR1 CDAFVR0 ADFVR1

Legend: Shaded cells are unused by the FVR module.

ADFVR0

Register

on page

138

DS41391C-page 138

Preliminary

 2009 Microchip Technology Inc.

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