MAX1031 Maxim Integrated Products, MAX1031 Datasheet - Page 18

• Manufacturer Part Number: MAX1031
• Description: (MAX1027 - MAX1031) 10-Bit 300ksps ADCs
• Manufacturer: Maxim Integrated Products

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10-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
Figure 5. Clock Mode 01
In clock mode 10, the wake up, acquisition, conversion,
and shutdown sequences are initiated by writing an
input data byte to the conversion register, and are per-
formed automatically using the internal oscillator. This
is the default clock mode upon power-up. See Figure 6
for clock mode 10 timing.
Initiate a scan by writing a byte to the conversion regis-
ter. The MAX1027/MAX1029/MAX1031 then power up,
scan all requested channels, store the results in the
18
Figure 6. Clock Mode 10
DIN
SCLK
DOUT
EOC
CS
CNVST
SCLK
DOUT
EOC
CS
______________________________________________________________________________________
Conversions Using the Serial Interface
(ACQUISITION1)
THE CONVERSION BYTE BEGINS THE ACQUISITION. CNVST IS NOT REQUIRED.
REQUEST MULTIPLE CONVERSIONS BY SETTING CNVST LOW FOR EACH CONVERSION.
Performing Conversions in Clock Mode 10
(CONVERSION1)
Internally Timed Acquisitions and
(ACQUISITION2)
(CONVERSION BYTE)
(CONVERSION2)
(UP TO 514 INTERNALLY CLOCKED ACQUISITIONS AND CONVERSIONS)
MSB1
MSB1
X = DON'T CARE.
X = DON'T CARE.
FIFO, and shut down. After the scan is complete, EOC
is pulled low and the results are available in the FIFO. If
a temperature measurement is requested, the tempera-
ture result precedes all other FIFO results. EOC stays
low until CS is pulled low again.
In clock mode 11, acquisitions and conversions are ini-
tiated by writing to the conversion register and are per-
formed one at a time using the SCLK as the conversion
Conversions Using the Serial Interface
Externally Clocked Acquisitions and
Performing Conversions in Clock Mode 11
LSB1
LSB1
MSB2
MSB2