MAX5816 MAXIM [Maxim Integrated Products], MAX5816 Datasheet - Page 24

• Manufacturer Part Number: MAX5816
• Description: Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC with Internal Reference and I2C Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

The CODEn command updates the CODE register contents for the selected DAC(s). Changes to the CODE register
content based on this command will not affect DAC outputs directly unless the latch has been configured to be trans-
parent (see the CONFIG command). In order to update CODE register content of all DACs, use the CODEn command
with DAC selection = 1XX = all DACs. The CODEn command supports the multibyte protocol. See
Table 5. CODEn (000) Command Format
Table 4. DAC Selection
The LOADn command (B[23:20] = 0001) updates the DAC register content for the selected DAC(s) by uploading the
current contents of the CODE register. The LOADn command can be used with DAC SELECTION = 1XX = ALL DACs
to issue a software load for all DACs, which does not alter the existing content of any CODE register (unlike CODEn_
LOAD_ALL command). See
Table 6. LOADn (001) Command Format
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC
0
0
M
M
Data Default Value ➝
B18
0
0
0
0
0
0
1
Command
Command
Command Byte
Command Byte
CODEn
LOADn
0
 Maxim Integrated Products 24
0
0
1
A2
A2
DAC Address
Dac Address
Table 3
with Internal Reference and I
A1
A1
and
B17
A0 D11 D10 D9
A0
X
0
0
1
1
Table
0
X
6. The LOADn command supports the multibyte protocol.
0
X
Code Register Data [11:4]
0
X
Data High Byte
Data High Byte
Don’t Care
D8
0
X
D7
B16
0
X
X
0
1
0
1
D6
0
X
D5
0
X
B8
D4
B8
0
X
DAC A
DAC B
DAC C
DAC D
ALL DACs
Code Register Data
B7
D3
B7
0
X
B6
D2
B6
0
X
[3:0]
DAC SELECTED
B5
D1
B5
0
X
2
Data Low Byte
Data Low Byte
C Interface
Don’t Care
B4
D0
CODEn Command
B4
LOADn Command
0
MAX5816
X
Table 3
B3
B3
X
X
X
Don’t Care
B2
B2
and
X
X
X
B1
B1
Table
X
X
X
B0
B0
X
X
X
5.