max5820 Maxim Integrated Products, Inc., max5820 Datasheet - Page 11

• Manufacturer Part Number: max5820
• Description: Max5820 Dual, 8-bit, Low-power, 2-wire, Serial Voltage-output Dac
• Manufacturer: Maxim Integrated Products, Inc.

Table 3. Command Byte Definitions
C3
0
0
0
0
1
1
1
1
1
1
1
1
C2
0
0
1
1
0
0
1
1
1
1
1
1
C1
0
0
0
0
0
0
0
0
1
1
1
1
______________________________________________________________________________________
C0
SERIAL DATA INPUT
0
1
0
1
0
1
0
1
0
1
1
1
Dual, 8-Bit, Low-Power, 2-Wire, Serial
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
D7
X
0
0
0
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
D6
X
0
0
0
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
D5
X
0
0
1
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
D4
X
0
1
0
Load DAC A input and DAC registers with new data.
Contents of DAC B input registers are transferred to the
DAC register. All outputs are updated.
Load DAC B input and DAC registers with new data.
Contents of DAC A input registers are transferred to the
DAC register. All outputs are updated.
Load DAC A input register with new data. DAC outputs
remain unchanged.
Load DAC B input register with new data. DAC outputs
remain unchanged.
Data in all input registers is transferred to respective DAC
registers. All DAC outputs are updated simultaneously.
New data is loaded into DAC A input register.
Data in all input registers is transferred to respective DAC
registers. All DAC outputs are updated simultaneously.
New data is loaded into DAC B input register.
Load all DACs with new data and update all DAC outputs
simultaneously. Both input and DAC registers are updated
with new data.
Load all input registers with new data. DAC outputs
remain unchanged.
Update all DAC outputs simultaneously. Device ignores
D7–D4. Do not send the data byte.
Extended command mode. The next word writes to the
power-down registers (see the Extended Command Mode
section).
Read DAC A data. The device expects an S
followed by an address word with R/W = 1.
Read DAC B data. The device expects an S
followed by an address word with R/W = 1.
Voltage-Output DAC
FUNCTION
r
r
condition
condition
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