SLAZ730B January   2019  – August 2021 MSP430FR5043

 

  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
      2.      RGC64
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC42
    2. 6.2  ADC65
    3. 6.3  ADC68
    4. 6.4  ADC69
    5. 6.5  ADC70
    6. 6.6  ADC71
    7. 6.7  CPU21
    8. 6.8  CPU22
    9. 6.9  CPU40
    10. 6.10 CPU46
    11. 6.11 CPU47
    12. 6.12 CS12
    13. 6.13 PMM31
    14. 6.14 PMM32
    15. 6.15 RTC12
    16. 6.16 TB25
    17. 6.17 USCI42
    18. 6.18 USCI45
    19. 6.19 USCI47
    20. 6.20 USCI50
  7. 7Revision History

6.20 USCI50

USCI Module

Category

Functional

Function

Data may not be transmitted correctly from the eUSCI when operating in SPI 4-pin master mode with UCSTEM = 0

Description

When the eUSCI is used in SPI 4-pin master mode with UCSTEM = 0 (STE pin used as an input to prevent conflicts with other SPI masters), data that is moved into UCxTXBUF while the UCxSTE input is in the inactive state may not be transmitted correctly.  If the eUSCI is used with UCSTEM = 1 (STE pin used to output an enable signal), data is transmitted correctly.

Workaround

When using the STE pin in conflict prevention mode (UCSTEM = 0), only move data into UCxTXBUF when UCxSTE is in the active state.  If an active transfer is aborted by UCxSTE transitioning to the master-inactive state, the data must be rewritten into UCxTXBUF to be transferred when UCxSTE transitions back to the master-active state.