ADS1243IPWT datasheet(19/25 Pages) TI

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ADS1242, 1243

SBAS235B

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STOPC–Stop Continuous

Description: Ends the continuous data output mode. Issue

after DRDY goes LOW.

Operands:

None

Bytes:

Encoding:

0000 1111

Data Transfer Sequence:

RREG–Read from Registers

Description: Output the data from up to 16 registers starting

with the register address specified as part of the instruction.

The number of registers read will be one plus the second byte

count. If the count exceeds the remaining registers, the ad-

dresses wrap back to the beginning.

Operands:

r, n

Bytes:

Encoding:

0001 rrrr xxxx nnnn

Data Transfer Sequence:

Read Two Registers Starting from Register 01H (MUX)

WREG–Write to Registers

Description: Write to the registers starting with the register

address specified as part of the instruction. The number of

registers that will be written is one plus the value of the second

byte.

Operands:

r, n

Bytes:

Encoding:

0101 rrrr xxxx nnnn

Data Transfer Sequence:

Write Two Registers Starting from 04H (DIO)

SELFCAL–Offset and Gain Self Calibration

Description: Starts the process of self calibration. The Offset

Calibration Register (OCR) and the Full-Scale Register (FSR)

are updated with new values after this operation.

Operands:

None

Bytes:

Encoding:

1111 0000

Data Transfer Sequence:

SELFOCAL–Offset Self Calibration

Description: Starts the process of self-calibration for offset.

The Offset Calibration Register (OCR) is updated after this

operation.

Operands:

None

Bytes:

Encoding:

1111 0001

Data Transfer Sequence:

SELFGCAL–Gain Self Calibration

Description: Starts the process of self-calibration for gain.

The Full-Scale Register (FSR) is updated with new values after

this operation.

Operands:

None

Bytes:

Encoding:

1111 0010

Data Transfer Sequence:

0000 1111

xxx

DRDY

0001 0001

0000 0001

xxxx xxxx

OUT

MUX

ACR

• • •(1)

NOTE: (1) For wait time, refer to timing specification.

0101 0100

xxxx 0001

Data for DIO

Data for DIR

1111 0000

1111 0001

1111 0010

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