MAX5150 Maxim, MAX5150 Datasheet - Page 10

• Manufacturer Part Number: MAX5150
• Description: Low-Power / Dual / 13-Bit Voltage-Output DACs with Serial Interface
• Manufacturer: Maxim

Table 1. Serial-Interface Programming Commands
Low-Power, Dual, 13-Bit Voltage-Output DACs
with Serial Interface
x = Don’t care
Note: When A0, C1, and C0 = 0, then D12, D11, D10, and D9 become control bits.
Figure 2. Connections for Microwire
10
A0
0
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
______________________________________________________________________________________
MAX5150
MAX5151
C1
0
0
1
1
1
0
1
0
0
0
0
0
0
0
0
0
16-BIT SERIAL WORD
C0
1
1
0
0
1
0
1
0
0
0
0
0
0
0
0
0
SCLK
DIN
CS
D12.......................D0
(MSB)
MSB
1 0 0 1 xxxxxxxxx
1 0 0 0 xxxxxxxxx
0 0 1 x xxxxxxxxx
1 0 1 x xxxxxxxxx
1 1 0 x xxxxxxxxx
1 1 1 x xxxxxxxxx
0 1 0 x xxxxxxxxx
0 1 1 x xxxxxxxxx
0 0 0 x xxxxxxxxx
13-bit DAC data
13-bit DAC data
13-bit DAC data
13-bit DAC data
13-bit DAC data
xxxxxxxxxxxxx
xxxxxxxxxxxxx
SK
SO
I/O
(LSB)
LSB
MICROWIRE
PORT
Load input register A; DAC registers are unchanged.
Load input register B; DAC registers are unchanged.
Load input register A; all DAC registers are updated.
Load input register B; all DAC registers are updated.
Load all DAC registers from the shift register
(start up both DACs with new data.).
Update both DAC registers from their respective input registers
(start up both DACs with data previously stored in the input registers).
Shut down both DACs (provided PDL = 1).
Update DAC register A from input register A
(start up DAC A with data previously stored in input register A).
Update DAC register B from input register B
(start up DAC B with data previously stored in input register B).
Shut down DAC A (provided PDL = 1).
Shut down DAC B (provided PDL = 1).
UPO goes low (default).
UPO goes high.
Mode 1, DOUT clocked out on SCLK’s rising edge.
Mode 0, DOUT clocked out on SCLK’s falling edge (default).
No operation (NOP).
puts become high impedance, and the serial inter-
face
saved, allowing the MAX5150/MAX5151 to recall the
output state prior to entering shutdown when returning
to normal mode. Exit shutdown by recalling the previ-
ous condition or by updating the DAC with new infor-
mation. When returning to normal operation (exiting
shutdown), wait 20µs for output stabilization.
The MAX5150/MAX5151 3-wire serial interface is com-
patible with both Microwire (Figure 2) and SPI/QSPI
(Figure 3) serial-interface standards. The 16-bit serial
input word consists of an address bit, two control bits,
and 13 bits of data (MSB to LSB) as shown in Figure 4.
remains active. Data in the input registers is
FUNCTION
Serial Interface