PIC16C770 Microchip Technology Inc., PIC16C770 Datasheet - Page 104
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PIC16C770
Manufacturer Part Number
PIC16C770
Description
18/20-pin, 8-bit Cmos Microcontrollers With 10/12-bit A/d
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16C770.pdf
(220 pages)
- Current page: 104 of 220
- Download datasheet (4Mb)
PIC16C717/770/771
REGISTER 10-2: VOLTAGE REFERENCE CONTROL REGISTER (REFCON: 9BH)
DS41120B-page 102
bit 7
bit 6
bit 5
bit 4
bit 3-0
bit 7
VRHEN: Voltage Reference High Enable bit (VRH = 4.096V nominal)
1 = Enabled, powers up reference generator
0 = Disabled, powers down reference generator if unused by LVD, BOR, or VRL
VRLEN: Voltage Reference Low Enable bit (VRL = 2.048V nominal)
1 = Enabled, powers up reference generator
0 = Disabled, powers down reference generator if unused by LVD, BOR, or VRH
VRHOEN: High Voltage Reference Output Enable bit
1 = Enabled, VRH analog reference is output on RA3 if enabled (VRHEN = 1)
0 = Disabled, analog reference is used internally only
VRLOEN: Low Voltage Reference Output Enable bit
1 = Enabled, VRL analog reference is output on RA2 if enabled (VRLEN = 1)
0 = Disabled, analog reference is used internally only
Unimplemented: Read as '0’
Legend:
R = Readable bit
- n = Value at POR
VRHEN
R/W-0
Note 1: RA2 and RA3 must be configured as analog inputs when the V
are enabled (See ANSEL on page 25).
VRLEN
R/W-0
VRHOEN
R/W-0
W = Writable bit
’1’ = Bit is set
VRLOEN
R/W-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U-0
—
(1)
(1)
U-0
—
2002 Microchip Technology Inc.
x = Bit is unknown
REF
U-0
—
output functions
U-0
—
bit 0
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