PIC16(L)F1946/47
DS41414D-page 158
2010-2012 Microchip Technology Inc.
14.3
Register Definitions: FVR Control
TABLE 14-1:
SUMMARY OF REGISTERS ASSOCIATED WITH THE FIXED VOLTAGE REFERENCE
REGISTER 14-1:
FVRCON: FIXED VOLTAGE REFERENCE CONTROL REGISTER
R/W-0/0
R-q/q
R/W-0/0
FVREN
FVRRDY(1)
TSEN
TSRNG
CDAFVR<1:0>
ADFVR<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
q = Value depends on condition
bit 7
FVREN:
Fixed Voltage Reference Enable bit
1 = Fixed Voltage Reference is enabled
0 = Fixed Voltage Reference is disabled
bit 6
FVRRDY:
Fixed Voltage Reference Ready Flag bit(1)
1 = Fixed Voltage Reference output is ready for use
0 = Fixed Voltage Reference output is not ready or not enabled
bit 5
TSEN:
Temperature Indicator Enable bit(3)
1 = Temperature Indicator is enabled
0 = Temperature Indicator is disabled
bit 4
TSRNG:
Temperature Indicator Range Selection bit(3)
1 =VOUT = VDD - 4VT (High Range)
0 =VOUT = VDD - 2VT (Low Range)
bit 3-2
CDAFVR<1:0>: Comparator and DAC Fixed Voltage Reference Selection bit
11 = Comparator and DAC and CPS Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)
10 = Comparator and DAC and CPS Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)
01 = Comparator and DAC and CPS Fixed Voltage Reference Peripheral output is 1x (1.024V)
00 = Comparator and DAC and CPS Fixed Voltage Reference Peripheral output is off
bit 1-0
ADFVR<1:0>:
ADC Fixed Voltage Reference Selection bit
11 = ADC Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)
10 = ADC Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)
01 = ADC Fixed Voltage Reference Peripheral output is 1x (1.024V)
00 = ADC Fixed Voltage Reference Peripheral output is off
Note 1:
FVRRDY is always ‘1’ on PIC16F1946/47 only.
2:
Fixed Voltage Reference output cannot exceed VDD.
3:
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on page
FVRCON
FVREN
FVRRDY
TSEN
TSRNG
CDAFVR<1:0>
ADFVR<1:0>
Legend:
Shaded cells are not used with the Fixed Voltage Reference.
