SLAZ357J October   2012  – May 2021 MSP430FE427

 

  1. 1Functional Advisories
  2. 2Preprogrammed Software Advisories
  3. 3Debug Only Advisories
  4. 4Fixed by Compiler Advisories
  5. 5Nomenclature, Package Symbolization, and Revision Identification
    1. 5.1 Device Nomenclature
    2. 5.2 Package Markings
      1.      PM64
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  CPU4
    2. 6.2  EEM20
    3. 6.3  ESP1
    4. 6.4  ESP2
    5. 6.5  ESP3
    6. 6.6  ESP4
    7. 6.7  ESP5
    8. 6.8  FLL3
    9. 6.9  MPY2
    10. 6.10 SD1
    11. 6.11 SD2
    12. 6.12 TA12
    13. 6.13 TA16
    14. 6.14 TA21
    15. 6.15 TAB22
    16. 6.16 US15
    17. 6.17 WDG2
  7. 7Revision History

6.5 ESP3

ESP Module

Category

Functional

Function

Temperature measurement in Tamper mode could modify SD16 settings.

Description

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.

Workaround

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.