SLAZ169O October   2012  – May 2021 MSP430F2274 , MSP430F2274-EP

 

  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.      DA38
      2.      RHA40
      3.      YFF49
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  BCL12
    2. 6.2  BCL13
    3. 6.3  BCL16
    4. 6.4  CPU14
    5. 6.5  CPU19
    6. 6.6  CPU45
    7. 6.7  EEM20
    8. 6.8  FLASH21
    9. 6.9  FLASH22
    10. 6.10 FLASH24
    11. 6.11 FLASH26
    12. 6.12 FLASH27
    13. 6.13 FLASH36
    14. 6.14 JTAG13
    15. 6.15 JTAG14
    16. 6.16 PORT10
    17. 6.17 SYS15
    18. 6.18 TA12
    19. 6.19 TA16
    20. 6.20 TA21
    21. 6.21 TAB22
    22. 6.22 TB2
    23. 6.23 TB16
    24. 6.24 TB24
    25. 6.25 USCI16
    26. 6.26 USCI20
    27. 6.27 USCI21
    28. 6.28 USCI22
    29. 6.29 USCI23
    30. 6.30 USCI24
    31. 6.31 USCI25
    32. 6.32 USCI26
    33. 6.33 USCI27
    34. 6.34 USCI30
    35. 6.35 USCI34
    36. 6.36 USCI35
    37. 6.37 USCI40
    38. 6.38 XOSC5
    39. 6.39 XOSC8
  7. 7Revision History

6.25 USCI16

USCI Module

Category

Functional

Function

UART/IrDA Mode Lost Characters

Description

When configured for UART/IrDA mode, the USCI baud rate generator may halt operation under the following conditions:
1 - IrDA mode: repeated invalid start bits on the receive line
or
2 - UART/IrDA modes: positive pulse on the receive line during break character reception inside the stop bit time slot (the second stop bit time slot in case of UCSPB=1) with a pulse width that passes the deglitch filter but is shorter than half a bit time.

After halting, additional characters will be ignored. Transmit functionality is not affected.

Workaround

Check the UCBUSY flag status periodically in software. If the flag is set and no character has been received in the expected time, reset the USCI module in software. To reset the USCI module, toggle UCSWRST and re-enable the USCI interrupts.