Datasheet

SCLK
DIN
DOUT
DRDY
MSB
0001001X
LSB
1 8 1 16
NOP NOP
RDATA
SCLK
DOUT
DIN
DRDY
NOPNOP NOP RDATA NOP NOP
1
D[15] D[6] D[1] D[1] D[0]D[9] D[8] D[7]D[14] D[15] D[14]
2 1 29 107 8 15 16 15 16
D[0]
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ADS1147
ADS1148
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SBAS453F JULY 2009REVISED APRIL 2012
RDATA—Read data once.
The RDATA command loads the most recent conversion result into the output register. After issuing this
command, the conversion result can be read out by sending 16 SCLKs, as shown in Figure 46. This
command also works in RDATAC mode.
When performing multiple reads of the conversion result, the RDATA command can be sent when the last
eight bits of the conversion result are being shifted out during the course of the first read operation by taking
advantage of the duplex communication nature of the SPI interface, as shown in Figure 47.
Figure 46. Read Data Once
Figure 47. Using RDATA in Full-Duplex Mode
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