MAX5258 Datasheet, PDF (12/20 Pages) Maxim Integrated Products – +3V/+5V, Low-Power, 8-Bit Octal DACs with Rail-to-Rail Output Buffers

+3V/+5V, Low-Power, 8-Bit Octal DAC
with Rail-to-Rail Output Buffers
Table 1. Serial-Interface Programming Commands
16-BIT SERIAL WORD*
A2 A1 A0 C2 C1 C0
X
X
X
0
0
0
D7……D0
XXXXXXXX
X
X
X
0
0
1
XXXXXXXX
X
X
X
0
1
0
XXXXXXXX
0
X
X
0
1
1
XXXXXXXX
1
X
X
0
1
1
XXXXXXXX
X
X
X
1
0
0 8-bit DAC data
0
0
0
1
0
1 8-bit DAC data
0
0
1
1
0
1 8-bit DAC data
0
1
0
1
0
1 8-bit DAC data
0
1
1
1
0
1 8-bit DAC data
1
0
0
1
0
1 8-bit DAC data
1
0
1
1
0
1 8-bit DAC data
1
1
0
1
0
1 8-bit DAC data
1
1
1
1
0
1 8-bit DAC data
0
0
0
1
1
0 8-bit DAC data
0
0
1
1
1
0 8-bit DAC data
0
1
0
1
1
0 8-bit DAC data
0
1
1
1
1
0 8-bit DAC data
1
0
0
1
1
0 8-bit DAC data
1
0
1
1
1
0 8-bit DAC data
1
1
0
1
1
0 8-bit DAC data
1
1
1
1
1
0 8-bit DAC data
X
X
X
1
1
1
* The first two bits are “don’t care.”
XXXXXXXX
LDAC
X
X
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
FUNCTION
No operation (NOP); shift data in shift registers.
Clears all input and DAC registers and sets all DAC
outputs to zero.
Software shutdown. Output buffers can be individually
shut down with zeros in the corresponding data bits.
DOUT Phase Mode 0. DOUT transitions on the falling
edge of SCLK.
DOUT Phase Mode 1. DOUT transitions on the rising
edge of SCLK.
Loads all DACs with the same data
Load input register A. All DAC outputs unchanged.
Load input register B. All DAC outputs unchanged.
Load input register C. All DAC outputs unchanged.
Load input register D. All DAC outputs unchanged.
Load input register E. All DAC outputs unchanged.
Load input register F. All DAC outputs unchanged.
Load input register G. All DAC outputs unchanged.
Load input register H. All DAC outputs unchanged.
Load input register A. Update OUTA. All other DAC
outputs unchanged.
Load input register B. Update OUTB. All other DAC
outputs unchanged.
Load input register C. Update OUTC. All other DAC
outputs unchanged.
Load input register D. Update OUTD. All other DAC
outputs unchanged.
Load input register E. Update OUTE. All other DAC
outputs unchanged.
Load input register F. Update OUTF. All other DAC
outputs unchanged.
Load input register G. Update OUTG. All other DAC
outputs unchanged.
Load input register H. Update OUTH. All other DAC
outputs unchanged.
Software LDAC command. Updates all DACs from their
respective input registers.
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