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DAC7678SPW Datasheet(PDF) 31 Page - Texas Instruments

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Part # DAC7678SPW
Description  12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital-to-Analog Converter with 2.5V Internal Reference
PDF  52 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

DAC7678SPW Datasheet(HTML) 31 Page - Texas Instruments

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DAC7678
www.ti.com
SBAS493A – FEBRUARY 2010 – REVISED AUGUST 2010
Table 17. Control Matrix for Write Commands
COMMAND AND ACCESS BYTE
MOST SIGNIFICANT DATA BYTE
LEAST SIGNIFICANT DATA BYTE
DESCRIPTION
C3
C2
C1
C0
A3
A2
A1
A0
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
Write to DAC Input Register
0
0
0
0
0
0
0
0
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel A
0
0
0
0
0
0
0
1
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel B
0
0
0
0
0
0
1
0
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel C
0
0
0
0
0
0
1
1
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel D
0
0
0
0
0
1
0
0
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel E
0
0
0
0
0
1
0
1
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel F
0
0
0
0
0
1
1
0
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel G
0
0
0
0
0
1
1
1
Data[11:4]
Data[3:0]
X
X
X
X
Write to DAC input register of channel H
0
0
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Invalid code, no action performed
0
0
0
0
1
1
1
1
Data[11:4]
Data[3:0]
X
X
X
X
Broadcast mode–write to all DAC channels
Select to Update DAC Register
0
0
0
1
0
0
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel A to be updated
0
0
0
1
0
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel B to be updated
0
0
0
1
0
0
1
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel C to be updated
0
0
0
1
0
0
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel D to be updated
0
0
0
1
0
1
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel E to be updated
0
0
0
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel F to be updated
0
0
0
1
0
1
1
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel G to be updated
0
0
0
1
0
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Selects DAC channel H to be updated
0
0
0
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Invalid code, no action performed
Broadcast mode–selects all DAC channels to be
0
0
0
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
updated
Write to DAC Input Registers and Update DAC Register (Individual Software LDAC)
Write to DAC input register for channel A and
0
0
1
1
0
0
0
0
Data[11:4]
Data[3:0]
X
X
X
X
update channel A DAC register
Write to DAC input register for channel B and
0
0
1
1
0
0
0
1
Data[11:4]
Data[3:0]
X
X
X
X
update channel B DAC register
Write to DAC input register for channel C and
0
0
1
1
0
0
1
0
Data[11:4]
Data[3:0]
X
X
X
X
update channel C DAC register
Write to DAC input register for channel D and
0
0
1
1
0
0
1
1
Data[11:4]
Data[3:0]
X
X
X
X
update channel D DAC register
Write to DAC input register for channel E and
0
0
1
1
0
1
0
0
Data[11:4]
Data[3:0]
X
X
X
X
update channel E DAC register
Write to DAC input register for channel F and
0
0
1
1
0
1
0
1
Data[11:4]
Data[3:0]
X
X
X
X
update channel F DAC register
Write to DAC input register for channel G and
0
0
1
1
0
1
1
0
Data[11:4]
Data[3:0]
X
X
X
X
update channel G DAC register
Write to DAC input register for channel H and
0
0
1
1
0
1
1
1
Data[11:4]
Data[3:0]
X
X
X
X
update channel H DAC register
0
0
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Invalid code, no action performed
Broadcast mode–write to all input registers and
0
0
1
1
1
1
1
1
Data[11:4]
Data[3:0]
X
X
X
X
update all DAC registers
Copyright © 2010, Texas Instruments Incorporated
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