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Hi TI Engineers and all,
We are using ADS1226 in our flow meter application.
1. The conversion result is wrong and keeps wrong after power-up(confirmed with the multimeter). if power up and down for 20 times, this would show up once or twice(this possibility is uncertain).
2. After the power-up stage, if the conversion is right, then it keeps right in the following operation.
3. We tried with the MSP430 debugger to see if it is the firmware problem, the program reset can not solve this, only by re-powering. After the start-pin trigger, the data ready interrupt signal is ok, everything is ok, but the data retrieved is wrong. After re-power up, everything is normal again.
Condition: 5V for analog, 3.3V for digital, 5Vref by REF5050(TI).
High speed mode.
No input buffer.
MCU: TI MSP430F2410TPMR
Comm: Toggle the pin
Speed: about 1MHz
the communication time sequence is right. Do you have any experience about this(Power quality? Device initialization?)? Thanks and waiting for your support and solution.
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