SLAZ107I October   2012  – May 2021 MSP430AFE222

 

  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.      PW24
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  BCL12
    2. 6.2  CPU4
    3. 6.3  EEM20
    4. 6.4  FLASH24
    5. 6.5  FLASH27
    6. 6.6  FLASH36
    7. 6.7  TA12
    8. 6.8  TA16
    9. 6.9  TA18
    10. 6.10 TA21
    11. 6.11 TAB22
    12. 6.12 US15
  7. 7Revision History

6.6 FLASH36

FLASH Module

Category

Functional

Function

Flash content may degrade due to aborted page erases

Description

If a page erase is aborted by EEIEX, the flash page containing the last instruction before erase operation will start to degrade. This effect is incremental and, after repetitions, may lead to corrupted flash content.

Workaround

- Use the EEI (interrupted erasing) feature instead of EEIEX (abort erasing).
or
- A PSA checksum can be calculated over affected flash page using the marginal read mode (marginal 0). If PSA sum differs from expected PSA value the affected flash page has to be reprogrammed.
or
- Start flash erasing from RAM and limit system frequency to <1MHz (to ensure 6-us delay after EEIEX).  If the last instruction before erasing is located in RAM, flash cell degradation does not occur.