Datasheet

ADS1240, 1241
19
SBAS173F
www.ti.com
STOPC–Stop Continuous
Description: Ends the continuous data output mode. Issue
after
DRDY goes LOW.
Operands: None
Bytes: 1
Encoding: 0000 1111
Data Transfer Sequence:
D
IN
0000 1111xxx
DRDY
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: 2
Encoding: 0001 rrrr xxxx nnnn
Data Transfer Sequence:
Read Two Registers Starting from Register 01
H
(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: 2
Encoding: 0101 rrrr xxxx nnnn
Data Transfer Sequence:
Write Two Registers Starting from 04
H
(DIO)
D
IN
0001 0001 0000 0001 xxxx xxxx xxxx xxxx
D
OUT
MUX ACR
• • •
(1)
NOTE: (1) For wait time, refer to timing specification.
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: 1
Encoding: 1111 0000
Data Transfer Sequence:
D
IN
1111 0000
0101 0100 xxxx 0001 Data for DIO Data for DIR
D
IN
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: 1
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: 1
Encoding: 1111 0010
Data Transfer Sequence:
D
IN
1111 0001
D
IN
1111 0010