ADS7863ARGET datasheet(22/42 Pages) TI2

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C[1:0] = 00

CHx0

P[1:0] = 01

Features ON

® S4 = 1

C[1:0] = 11

CHx1

P[1:0] = 11

No Updates

C[1:0] = 11

CHx1

P[1:0] = 11

No Updates

C[1:0] = 11

CHx1

P[1:0] = 11

No Updates

12-Bit

Data CHB1

12-Bit

Data CHA1

12-Bit

Data CHA0

12-Bit

Data CHB0

12-Bit

Data CHA1

Previous 12-Bit

Data CHAx

Previous 12-Bit

Data CHBx

High-Z

No Conversion,

Read Access Only

No Conversion,

Read Access Only

Conversion

of Both CHx1

Conversion

of Both CHx1

Conversion

of Both CHx0

Previous Conversion

of Both CHxx

0 s

0.5 s

1.0 s

1.5 s

2.0 s

2.5 s

3.0 s

CLOCK

CONVST

SDI

SDOA

SDOB

BUSY

® S4 Still = 1

® S4

= 1

Still

® S4

= 1

Still

ADS7863A

SBAS610 – DECEMBER 2013

www.ti.com

Special Mode II (Not ADS7861-Compatible)

For Mode II, a special read mode is available in the ADS7863A where both data results can be read out,

triggered by a single RD pulse. To activate this mode, bit S4 in the SDI register must be set to '1' (see also the

Serial Data Input section).

The CONVST and RD pins can remain tied together, but do not need to be issued every 16 CLOCK cycles.

Output data are presented on both terminals, SDOA and SDOB. Figure 37 illustrates the special read mode.

Figure 37. Special Mode II Timing Diagram (M0 = 0, M1 = 1, S4 = 1)

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ADS7863ARGET Datasheet(PDF) 22 Page - Texas Instruments

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