SLAZ197I October 2012 – May 2021 MSP430F425
ESP Module
Functional
Temperature measurement in Tamper mode could modify SD16 settings.
Unintended modification of the SD16 registers by the ESP can occur during temperature measurement when operating in Tamper mode. The following simultaneous events can trigger this:
1. Meter is running in Tamper mode (Measuring on both I1 and I2 current channels)
2. Temperature measurement is requested
3. I2GTI1FG in register ESP430_STAT0 changes state from logic "0" to "1" or logic "1" to "0" during the Temperature measurement.
Synchronize the request for Temperature measurement with the ENRDYFG or ENRDYME.
Request for temperature measurement after the flag ENRDYFG=1, or when ENRDYME is set to 1. This ensures enough time for the temperature measurement before I2GTI1FG changes state.