PIC16LF1904 Datasheet, PDF (122/288 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16LF1904/6/7
13.3 FVR Control Registers
REGISTER 13-1: FVRCON: FIXED VOLTAGE REFERENCE CONTROL REGISTER
R/W-0/0
R-q/q
R/W-0/0
R/W-0/0
U-0
FVREN
FVRRDY⁽¹⁾
TSEN
TSRNG
—
bit 7
U-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
bit 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
TSEN: Temperature Indicator Enable bit
0 = Temperature Indicator is disabled
1 = Temperature Indicator is enabled
TSRNG: Temperature Indicator Range Selection bit
0 = VOUT = VDD - 2VT (Low Range)
1 = VOUT = VDD - 4VT (High Range)
Unimplemented: Read as ‘0’
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 = Reserved
Note 1: FVRRDY will output the true state of the band gap.
2: Fixed Voltage Reference output cannot exceed VDD.
TABLE 13-2: SUMMARY OF REGISTERS ASSOCIATED WITH FIXED VOLTAGE REFERENCE
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
FVRCON
FVREN FVRRDY
TSEN
TSRNG
—
Legend: Shaded cells are not used with the Fixed Voltage Reference.
Bit 2
—
Bit 1
ADFVR1
Bit 0
ADFVR0
Register
on page
122
DS41569A-page 122
Preliminary
 2011 Microchip Technology Inc.