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PIC16F193X Datasheet, PDF (158/418 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
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PIC16F193X/LF193X
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
—
R/W-0/0
—
R/W-0/0
CDAFVR1
R/W-0/0
CDAFVR0
R/W-0/0
ADFVR1
R/W-0/0
ADFVR0
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 active or stable
1 = Fixed Voltage Reference output is ready for use
Reserved: Read as ‘0’. Maintain these bits clear.
CDAFVR<1:0>: Comparator and D/A Converter Fixed Voltage Reference Selection bit
00 = Comparator and D/A Converter Fixed Voltage Reference Peripheral output is off.
01 = Comparator and D/A Converter Fixed Voltage Reference Peripheral output is 1x (1.024V)
10 = Comparator and D/A Converter Fixed Voltage Reference Peripheral output is 2x (2.048V)(2)
11 = Comparator and D/A Converter Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)
ADFVR<1:0>: A/D Converter Fixed Voltage Reference Selection bit
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)(2)
11 = A/D Converter Fixed Voltage Reference Peripheral output is 4x (4.096V)(2)
Note 1: FVRRDY is always ‘1’ on regulated parts (PIC16F193X).
2: Fixed Voltage Reference output cannot exceed VDD.
TABLE 14-1: REGISTERS ASSOCIATED WITH VOLTAGE REFERENCE
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
FVRCON
FVREN FVRRDY TSEN TSRNG CDAFVR1 CDAFVR0 ADFVR1
Legend: Shaded cells are not used with the voltage reference.
Bit 0
ADFVR0
Register
on page
156
DS41364A-page 156
Preliminary
© 2008 Microchip Technology Inc.
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