SLAZ142I October   2012  – May 2021 MSP430F155

 

  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.      RTD64
      2.      PM64
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC18
    2. 6.2  ADC25
    3. 6.3  BCL5
    4. 6.4  CPU4
    5. 6.5  DAC4
    6. 6.6  I2C7
    7. 6.7  I2C8
    8. 6.8  I2C9
    9. 6.9  I2C10
    10. 6.10 I2C11
    11. 6.11 I2C12
    12. 6.12 I2C13
    13. 6.13 I2C14
    14. 6.14 I2C15
    15. 6.15 I2C16
    16. 6.16 TA12
    17. 6.17 TA16
    18. 6.18 TA21
    19. 6.19 TAB22
    20. 6.20 TB2
    21. 6.21 TB16
    22. 6.22 TB24
    23. 6.23 US14
    24. 6.24 US15
    25. 6.25 WDG2
    26. 6.26 XOSC4
  7. 7Revision History

6.7 I2C8

I2C Module

Category

Functional

Function

Master Transmitter transmits 0FFh continuously.

Description

When the USART is configured for I2C mode (U0CTL.I2C, SYNC, and I2CEN are set) and the module is configured as an I2C master (U0CTL.MST=1) and I2CNDAT is used to control the number of bytes to transmit, the possibility exists that the master state-machine can become corrupted and start sending 0FFh as data on the I2C bus. Specifically, this error can occur when a long delay occurs between the set of the I2CTXRDY interrupt flag and the loading of I2CDRB (I2CDRW).

Workaround

After detection of the I2CTXRDY interrupt flag, verify that the I2CTXUDF bit in I2CDCTL is set before loading I2CDRB (I2CDRW).