SLAZ271AB October   2012  – May 2021 MSP430F5327

 

  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.      PN80
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC25
    2. 6.2  ADC27
    3. 6.3  ADC29
    4. 6.4  ADC42
    5. 6.5  ADC69
    6. 6.6  BSL6
    7. 6.7  BSL7
    8. 6.8  COMP10
    9. 6.9  CPU21
    10. 6.10 CPU22
    11. 6.11 CPU23
    12. 6.12 CPU26
    13. 6.13 CPU27
    14. 6.14 CPU28
    15. 6.15 CPU29
    16. 6.16 CPU30
    17. 6.17 CPU31
    18. 6.18 CPU32
    19. 6.19 CPU33
    20. 6.20 CPU34
    21. 6.21 CPU35
    22. 6.22 CPU37
    23. 6.23 CPU39
    24. 6.24 CPU40
    25. 6.25 CPU47
    26. 6.26 DMA4
    27. 6.27 DMA7
    28. 6.28 DMA8
    29. 6.29 DMA10
    30. 6.30 EEM9
    31. 6.31 EEM11
    32. 6.32 EEM13
    33. 6.33 EEM14
    34. 6.34 EEM15
    35. 6.35 EEM16
    36. 6.36 EEM17
    37. 6.37 EEM19
    38. 6.38 EEM21
    39. 6.39 EEM23
    40. 6.40 FLASH33
    41. 6.41 FLASH34
    42. 6.42 FLASH35
    43. 6.43 FLASH37
    44. 6.44 JTAG20
    45. 6.45 JTAG26
    46. 6.46 JTAG27
    47. 6.47 LDO1
    48. 6.48 MPY1
    49. 6.49 PMAP1
    50. 6.50 PMM9
    51. 6.51 PMM10
    52. 6.52 PMM11
    53. 6.53 PMM12
    54. 6.54 PMM14
    55. 6.55 PMM15
    56. 6.56 PMM17
    57. 6.57 PMM18
    58. 6.58 PMM20
    59. 6.59 PORT15
    60. 6.60 PORT16
    61. 6.61 PORT19
    62. 6.62 PORT24
    63. 6.63 RTC3
    64. 6.64 RTC6
    65. 6.65 SYS10
    66. 6.66 SYS12
    67. 6.67 SYS14
    68. 6.68 SYS16
    69. 6.69 TAB23
    70. 6.70 USCI26
    71. 6.71 USCI30
    72. 6.72 USCI31
    73. 6.73 USCI34
    74. 6.74 USCI35
    75. 6.75 USCI39
    76. 6.76 USCI40
    77. 6.77 WDG4
  7. 7Revision History

ADC27

ADC Module

Category

Functional

Function

Integral and differential non-linearity exceed specifications

Description

The ADC12_A integral and differential non-linearity may exceed the limits specified in the data sheet under the following conditions:

- If the internal voltage reference generator is used

and

- If the reference voltage is not buffered off-chip

and

- If fADC12CLK > 2.7 MHz

The non-linearity can be up to tens of LSBs. This is due to the internal reference buffer providing insufficient drive for the switched capacitor array of the ADC12_A.

Workaround

(1) Turn on the output of the internal voltage reference to increase the drive strength of the reference to the ADC_12 core:

- If REFMSTR bit in REFCTL0 is 0 (allowing Shared REF to be controlled by ADC_A reference control bits)

Set ADC12REFON bit in ADC12CTL0 = 1

and

Set ADC12REFOUT bit in ADC12CTL2 = 1

- If REFMSTR bit in REFCTL0 is 1

Set REFON and REFOUT bits in REFCTL0 = 1

OR

(2) Ensure fADC12CLK < 2.7 MHz. Depending on the frequency of the source of fADC12CLK (ACLK, MCLK, SMCLK, or MODOSC), select the divider bits accordingly.

- If fADC12CLK = MODOSC

(ADC12OSC) ADC12CTL1 |= ADC12DIV_1; // Divide clock by 2

- If fADC12CLK = ACLK/SMCLK/MCLK > 2.7 MHz.

Use ADC12DIVx and/or ADC12PDIVx bits to reduce the selected clock frequency to between 0.45 MHz and 2.7 MHz.