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MCP47FXB2XT-EST Scheda tecnica(PDF) 59 Page - Microchip Technology

Il numero della parte MCP47FXB2XT-EST
Spiegazioni elettronici  8/10/12-Bit Quad/Octal Voltage Output, 6 LSb INL Digital-to-Analog Converters with I짼C Interface
PDF  124 Pages
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Produttore elettronici  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP47FXB2XT-EST Scheda tecnica(HTML) 59 Page - Microchip Technology

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 2020 Microchip Technology Inc.
DS20006368A-page 59
MCP47FXBX4/8
Register 4-2 shows the format of the Voltage
Reference Control register. Each DAC has two bits to
control the source of the DAC’s voltage reference. This
register is for both volatile and nonvolatile memory
locations.
REGISTER 4-2:
VOLTAGE REFERENCE (VREF) CONTROL REGISTER
ADDRESSES 08H AND 18H (VOLATILE/NONVOLATILE)
R/W-nR/W-n R/W-nR/W-n R/W-nR/W-n R/W-n R/W-n R/W-nR/W-n R/W-nR/W-n R/W-nR/W-n R/W-n R/W-n
Octal
VR7B VR7A VR6B VR6A VR5B VR5A VR4B VR4A VR3B VR3A VR2B VR2A VR1B VR1A VR0B VR0A
Quad
—(1)
—(1)
—(1)
—(1)
—(1)
—(1)
—(1)
—(1) VR3B VR3A VR2B VR2A VR1B VR1A VR0B VR0A
bit 15
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
= Quad-channel device
= Octal-channel device
Octal
Quad
—
bit 15-8
Unimplemented: Read as ‘0’
bit 15-0
bit 7-0
VRnB-VRnA: DAC Voltage Reference Control bits
11 =VREF pin (buffered); VREF buffer enabled
10 =VREF pin (unbuffered); VREF buffer disabled
01 =Internal band gap (1.22V typical); VREF buffer enabled
VREF voltage driven when powered down
00 =VDD (unbuffered); VREF buffer disabled
Use this state with Power-Down bits for lowest current.
Note 1:
Unimplemented bit, read as ‘0’.



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