PIC16F1507-ESLASHSS. datasheet(114/278 Pages) MICROCHIP

114 / 278 page

PIC16(L)F1507

DS40001586D-page 114

 2011-2015 Microchip Technology Inc.

13.3

TABLE 13-2:

SUMMARY OF REGISTERS ASSOCIATED WITH THE FIXED VOLTAGE REFERENCE

FVRCON: FIXED VOLTAGE REFERENCE CONTROL REGISTER

R/W-0/0

R-q/q

R/W-0/0

U-0

R/W-0/0

FVREN(1)

FVRRDY(2)

TSEN(3)

TSRNG(3)

—

ADFVR<1:0>(1)

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

q = Value depends on condition

bit 7

FVREN:

Fixed Voltage Reference Enable bit(1)

= Fixed Voltage Reference is enabled

= Fixed Voltage Reference is disabled

bit 6

FVRRDY:

Fixed Voltage Reference Ready Flag bit(2)

= Fixed Voltage Reference output is ready for use

= Fixed Voltage Reference output is not ready or not enabled

bit 5

TSEN:

Temperature Indicator Enable bit(3)

= Temperature Indicator is enabled

= Temperature Indicator is disabled

bit 4

TSRNG:

Temperature Indicator Range Selection bit(3)

=VOUT = VDD - 4VT (High Range)

=VOUT = VDD - 2VT (Low Range)

bit 3-2

Unimplemented:

Read as ‘0’

bit 1-0

ADFVR<1:0>:

ADC FVR Buffer Gain Selection bit(1)

= ADC FVR Buffer Gain is 4x, with output voltage = 4x VFVR (4.096V nominal)(4)

= ADC FVR Buffer Gain is 2x, with output voltage = 2x VFVR (2.048V nominal)(4)

= ADC FVR Buffer Gain is 1x, with output voltage = 1x VFVR (1.024V nominal)

= ADC FVR Buffer is off

Note 1:

To minimize current consumption when the FVR is disabled, the FVR buffers should be turned off by clear-

ing the Buffer Gain Selection bits.

FVRRDY is always ‘1’ for the PIC16F1507 devices.

See Section 14.0 “Temperature Indicator Module” for additional information.

Fixed Voltage Reference output cannot exceed VDD.

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

on page

FVRCON

FVREN

FVRRDY

TSEN

TSRNG

—

ADFVR<1:0>

114

Legend:

Shaded cells are unused by the Fixed Voltage Reference module.

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