Rainbow Electronics MAX5511 - Manual (Page 13)

MAX5510/MAX5511
+1.8V to +5.5V, Ultra-Low-Power, 8-Bit,
Voltage-Output DACs
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CONTROL BITS INPUT DATA SUB-BITS
C3 C2 C1 C0 D7–D0 S3–S0
FUNCTION
0 0 0 0 XXXXXXXX 0000 No operation; command is ignored.
0 0 0 1 8-bit data 0000
Load input register from shift register; DAC register
unchanged; DAC output unchanged.
0 0 1 0 — — Command reserved; do not use.
0 0 1 1 — — Command reserved; do not use.
0 1 0 0 — — Command reserved; do not use.
0 1 0 1 — — Command reserved; do not use.
0 1 1 0 — — Command reserved; do not use.
0 1 1 1 — — Command reserved; do not use.
1 0 0 0 8-bit data 0000
Load DAC register from input register; DAC output
updated; MAX5510 enters normal operation if in
shutdown; MAX5511 enters normal operation if in
standby or shutdown.
1 0 0 1 8-bit data 0000
Load input register and DAC register from shift register;
DAC output updated; MAX5510 enters normal operation
if in shutdown; MAX5511 enters normal operation if in
standby or shutdown.
1 0 1 0 — — Command reserved; do not use.
1 0 1 1 — — Command reserved; do not use.
1 1 0 0
D7, D6,
XXXXXX
0000
MAX5510 enters shutdown; MAX5511 enters standby*.
For the MAX5511, D7 and D6 configure the internal
reference voltage (Table 3).
1 1 0 1
D7, D6,
XXXXXX
0000
MAX5510/MAX5511 enter normal operation; DAC output
reflects existing contents of DAC register. For the
MAX5511, D7 and D6 configure the internal reference
voltage (Table 3).
1 1 1 0
D7, D6,
XXXXXX
0000
MAX5510/MAX5511 enter shutdown; DAC output set to
high impedance. For the MAX5511, D7 and D6 configure
the internal reference voltage (Table 3).
1 1 1 1 8-bit data 0000
Load input register and DAC register from shift register;
DAC output updated; MAX5510 enters normal operation
if in shutdown; MAX5511 enters normal operation if in
standby or shutdown.
Table 2. Serial-Interface Programming Commands
X = Don’t care.
*Standby mode can be entered from normal operation only. It is not possible to enter standby mode from shutdown.