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MCP4728 датащи(PDF) 43 Page - Microchip Technology

номер детали MCP4728
подробное описание детали  12-Bit, Quad Digital-to-Analog Converter with EEPROM Memory
PDF  66 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4728 датащи(HTML) 43 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS22187C-page 43
MCP4728
FIGURE 5-12:
Write Command: Write Voltage Reference Selection Bit (VREF) to the DAC Input
Registers.
FIGURE 5-13:
Write Command: Write Power-Down Selection Bits (PD1, PD0) to the DAC Input
Registers. See Table 4-7 for the power-down bit setting.
Note 1: V
REF = 0: VDD
= 1: Internal Reference (2.048V)
VREF A = Voltage reference of Channel A
VREF B = Voltage reference of Channel B
VREF C = Voltage reference of Channel C
VREF D = Voltage reference of Channel D
2: X is don’t care bit.
Command Type Bits:
C2=1
C1=0
C0=0
1st byte
Note 1
2nd Byte
R/W
Device Addressing
ACK
(MCP4728)
(C2 C1 C0)
Start
Write
S
1
1
0
0A2 A1 A00
A1
0
0
X
VREF AVREF BVREF CVREF D A
P
Command
Registers and VOUT are updated
at this falling edge of ACK pulse.
Stop
Note 1: X is don’t care bit.
2nd Byte
(C2 C1 C0)
3rd Byte
1
0
1
X
PD1 A
PD0 A PD1 B PD0 B A
PD1 C
PD0 C PD1 D
PD0 D
X
X
X
X
A
P
ACK
(MCP4728)
1st byte
Channel C
R/W
Device Addressing
ACK
(MCP4728)
Start
Write
S
1
1
0
0
A2A1A0
0
A
Command
Command Type Bits:
C2=1
C1=0
C0=1
Stop
Registers and VOUT are updated
at this falling edge of ACK pulse.
Channel A
Channel B
Channel D
for Power-Down
Selection Bits



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