Table 4. command summary – Rainbow Electronics MAX5550 User Manual
Page 13
MAX5550
Dual, 10-Bit, Programmable, 30mA
High-Output-Current DAC
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13
SERIAL DATA INPUT
C5
C4
C3
C2
C1
C0
D9–D0
FUNCTIONS
0
0
0
0
0
0
XXXXXXXXXX
No operation.
0
0
0
0
0
1
10-bit DAC data
Load DAC data to both DAC registers and both input registers from the
shift register.
0
0
0
0
1
0
10-bit DAC data
Load DAC register A and input register A from the shift register.
0
0
0
0
1
1
10-bit DAC data
Load DAC register B and input register B from the shift register.
0
0
0
1
0
0
10-bit DAC data
Load both channel input registers from the shift register, both DAC
registers are unchanged.
0
0
0
1
0
1
10-bit DAC data
Load input register A from the shift register; DAC register A is
unchanged.
0
0
0
1
1
0
10-bit DAC data
Load input register B from the shift register; DAC register B is
unchanged.
0
0
0
1
1
1
XXXXXXXXXX
Update both DAC registers from their corresponding input registers.
0
0
1
0
0
1
XXXXXXXXXX
Update DAC register A from input register A.
0
0
1
0
1
0
XXXXXXXXXX
Update DAC register B from input register B.
0
0
1
0
1
1
XXXXXXXXXX
Internal reference mode.
0
0
1
1
0
0
XXXXXXXXXX
External reference mode (default mode at power-up).
0
0
1
1
0
1
XXXXXXXXXX
Shut down both DACs.
0
0
1
1
1
0
XXXXXXXXXX
Shut down DACA.
0
0
1
1
1
1
XXXXXXXXXX
Shut down DACB.
0
1
0
0
0
0
XXXXXXXXXX
DACA 1mA–2mA full-scale current range mode (default mode at
power-up)
0
1
0
0
0
1
XXXXXXXXXX
DACA 1.5mA–3mA full-scale current range mode.
0
1
0
0
1
0
XXXXXXXXXX
DACA 2.5mA–5mA full-scale current range mode.
0
1
0
0
1
1
XXXXXXXXXX
DACA 4.5mA–9mA full-scale current range mode.
0
1
0
1
0
0
XXXXXXXXXX
DACA 8mA–16mA full-scale current range mode.
0
1
0
1
0
1
XXXXXXXXXX
DACA 15mA–30mA full-scale current range mode.
1
0
1
1
0
1
XXXXXXXXXX
Power up both DACs.
1
0
1
1
1
0
XXXXXXXXXX
Power up DACA.
1
0
1
1
1
1
XXXXXXXXXX
Power up DACB.
1
1
0
0
0
0
XXXXXXXXXX
DACB 1mA–2mA full-scale current range mode (default mode at
power-up)
1
1
0
0
0
1
XXXXXXXXXX
DACB 1.5mA–3mA full-scale current range mode.
1
1
0
0
1
0
XXXXXXXXXX
DACB 2.5mA–5mA full-scale current range mode.
1
1
0
0
1
1
XXXXXXXXXX
DACB 4.5mA–9mA full-scale current range mode.
1
1
0
1
0
0
XXXXXXXXXX
DACB 8mA–16mA full-scale current range mode.
1
1
0
1
0
1
XXXXXXXXXX
DACB 15mA–30mA full-scale current range mode.
Table 4. Command Summary