SLAS797C August   2014  – August 2018 MSP430FR6927 , MSP430FR69271 , MSP430FR6928 , MSP430FR6977 , MSP430FR6979 , MSP430FR69791

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
    1. 3.1 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagrams
    2. 4.2 Signal Descriptions
      1. Table 4-1 Signal Descriptions – MSP430FR697x and MSP430FR697x1
      2. Table 4-2 Signal Descriptions – MSP430FR692x(1)
    3. 4.3 Pin Multiplexing
    4. 4.4 Connection of Unused Pins
  5. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Active Mode Supply Current Into VCC Excluding External Current
    5. 5.5  Typical Characteristics, Active Mode Supply Currents
    6. 5.6  Low-Power Mode (LPM0, LPM1) Supply Currents Into VCC Excluding External Current
    7. 5.7  Low-Power Mode (LPM2, LPM3, LPM4) Supply Currents (Into VCC) Excluding External Current
    8. 5.8  Low-Power Mode With LCD Supply Currents (Into VCC) Excluding External Current
    9. 5.9  Low-Power Mode LPMx.5 Supply Currents (Into VCC) Excluding External Current
    10. 5.10 Typical Characteristics, Low-Power Mode Supply Currents
    11. 5.11 Typical Characteristics, Current Consumption per Module
    12. 5.12 Thermal Resistance Characteristics
    13. 5.13 Timing and Switching Characteristics
      1. 5.13.1 Power Supply Sequencing
        1. Table 5-1 Brownout and Device Reset Power Ramp Requirements
        2. Table 5-2 SVS
      2. 5.13.2 Reset Timing
        1. Table 5-3 Reset Input
      3. 5.13.3 Clock Specifications
        1. Table 5-4 Low-Frequency Crystal Oscillator, LFXT
        2. Table 5-5 High-Frequency Crystal Oscillator, HFXT
        3. Table 5-6 DCO
        4. Table 5-7 Internal Very-Low-Power Low-Frequency Oscillator (VLO)
        5. Table 5-8 Module Oscillator (MODOSC)
      4. 5.13.4 Wake-up Characteristics
        1. Table 5-9   Wake-up Times From Low-Power Modes and Reset
        2. Table 5-10 Typical Wake-up Charge
        3. 5.13.4.1    Typical Characteristics, Average LPM Currents vs Wake-up Frequency
      5. 5.13.5 Peripherals
        1. 5.13.5.1 Digital I/Os
          1. Table 5-11 Digital Inputs
          2. Table 5-12 Digital Outputs
          3. 5.13.5.1.1  Typical Characteristics, Digital Outputs at 3.0 V and 2.2 V
          4. Table 5-13 Pin-Oscillator Frequency, Ports Px
          5. 5.13.5.1.2  Typical Characteristics, Pin-Oscillator Frequency
        2. 5.13.5.2 Timer_A and Timer_B
          1. Table 5-14 Timer_A
          2. Table 5-15 Timer_B
        3. 5.13.5.3 eUSCI
          1. Table 5-16 eUSCI (UART Mode) Clock Frequency
          2. Table 5-17 eUSCI (UART Mode)
          3. Table 5-18 eUSCI (SPI Master Mode) Clock Frequency
          4. Table 5-19 eUSCI (SPI Master Mode)
          5. Table 5-20 eUSCI (SPI Slave Mode)
          6. Table 5-21 eUSCI (I2C Mode)
        4. 5.13.5.4 LCD Controller
          1. Table 5-22 LCD_C, Recommended Operating Conditions
          2. Table 5-23 LCD_C Electrical Characteristics
        5. 5.13.5.5 ADC
          1. Table 5-24 12-Bit ADC, Power Supply and Input Range Conditions
          2. Table 5-25 12-Bit ADC, Timing Parameters
          3. Table 5-26 12-Bit ADC, Linearity Parameters With External Reference
          4. Table 5-27 12-Bit ADC, Dynamic Performance for Differential Inputs With External Reference
          5. Table 5-28 12-Bit ADC, Dynamic Performance for Differential Inputs With Internal Reference
          6. Table 5-29 12-Bit ADC, Dynamic Performance for Single-Ended Inputs With External Reference
          7. Table 5-30 12-Bit ADC, Dynamic Performance for Single-Ended Inputs With Internal Reference
          8. Table 5-31 12-Bit ADC, Dynamic Performance With 32.768-kHz Clock
          9. Table 5-32 12-Bit ADC, Temperature Sensor and Built-In V1/2
          10. Table 5-33 12-Bit ADC, External Reference
        6. 5.13.5.6 Reference
          1. Table 5-34 REF, Built-In Reference
        7. 5.13.5.7 Comparator
          1. Table 5-35 Comparator_E
        8. 5.13.5.8 FRAM Controller
          1. Table 5-36 FRAM
      6. 5.13.6 Emulation and Debug
        1. Table 5-37 JTAG and Spy-Bi-Wire Interface
  6. 6Detailed Description
    1. 6.1  Overview
    2. 6.2  CPU
    3. 6.3  Operating Modes
      1. 6.3.1 Peripherals in Low-Power Modes
        1. 6.3.1.1 Idle Currents of Peripherals in LPM3 and LPM4
    4. 6.4  Interrupt Vector Table and Signatures
    5. 6.5  Bootloader (BSL)
    6. 6.6  JTAG Operation
      1. 6.6.1 JTAG Standard Interface
      2. 6.6.2 Spy-Bi-Wire Interface
    7. 6.7  FRAM
    8. 6.8  RAM
    9. 6.9  Tiny RAM
    10. 6.10 Memory Protection Unit Including IP Encapsulation
    11. 6.11 Peripherals
      1. 6.11.1  Digital I/O
      2. 6.11.2  Oscillator and Clock System (CS)
      3. 6.11.3  Power-Management Module (PMM)
      4. 6.11.4  Hardware Multiplier (MPY)
      5. 6.11.5  Real-Time Clock (RTC_C)
      6. 6.11.6  Watchdog Timer (WDT_A)
      7. 6.11.7  System Module (SYS)
      8. 6.11.8  DMA Controller
      9. 6.11.9  Enhanced Universal Serial Communication Interface (eUSCI)
      10. 6.11.10 Timer_A TA0, Timer_A TA1
      11. 6.11.11 Timer_A TA2
      12. 6.11.12 Timer_A TA3
      13. 6.11.13 Timer_B TB0
      14. 6.11.14 ADC12_B
      15. 6.11.15 Comparator_E
      16. 6.11.16 CRC16
      17. 6.11.17 CRC32
      18. 6.11.18 AES256 Accelerator
      19. 6.11.19 True Random Seed
      20. 6.11.20 Shared Reference (REF_A)
      21. 6.11.21 LCD_C
      22. 6.11.22 Embedded Emulation
        1. 6.11.22.1 Embedded Emulation Module (EEM)
        2. 6.11.22.2 EnergyTrace++™ Technology
      23. 6.11.23 Input/Output Diagrams
        1. 6.11.23.1  Digital I/O Functionality – Ports P1 to P10
        2. 6.11.23.2  Capacitive Touch Functionality Ports P1 to P10 and PJ
        3. 6.11.23.3  Port P1 (P1.0 to P1.3) Input/Output With Schmitt Trigger
        4. 6.11.23.4  Port P1 (P1.4 to P1.7) Input/Output With Schmitt Trigger
        5. 6.11.23.5  Port P2 (P2.0 to P2.3) Input/Output With Schmitt Trigger
        6. 6.11.23.6  Port P2 (P2.4 to P2.7) Input/Output With Schmitt Trigger
        7. 6.11.23.7  Port P3 (P3.0 to P3.7) Input/Output With Schmitt Trigger
        8. 6.11.23.8  Port P4 (P4.0 to P4.7) Input/Output With Schmitt Trigger
        9. 6.11.23.9  Port P5 (P5.0 to P5.7) Input/Output With Schmitt Trigger
        10. 6.11.23.10 Port P6 (P6.0 to P6.6) Input/Output With Schmitt Trigger
        11. 6.11.23.11 Port P6 (P6.7) Input/Output With Schmitt Trigger
        12. 6.11.23.12 Port P7 (P7.0 to P7.7) Input/Output With Schmitt Trigger
        13. 6.11.23.13 Port P8 (P8.0 to P8.3) Input/Output With Schmitt Trigger
        14. 6.11.23.14 Port P8 (P8.4 to P8.7) Input/Output With Schmitt Trigger
        15. 6.11.23.15 Port P9 (P9.0 to P9.3) Input/Output With Schmitt Trigger
        16. 6.11.23.16 Port P9 (P9.4 to P9.7) Input/Output With Schmitt Trigger
        17. 6.11.23.17 Port P10 (P10.0 to P10.2) Input/Output With Schmitt Trigger
        18. 6.11.23.18 Port PJ (PJ.4 and PJ.5) Input/Output With Schmitt Trigger
        19. 6.11.23.19 Port PJ (PJ.6 and PJ.7) Input/Output With Schmitt Trigger
        20. 6.11.23.20 Port PJ (PJ.0 to PJ.3) JTAG Pins TDO, TMS, TCK, TDI/TCLK, Input/Output With Schmitt Trigger
    12. 6.12 Device Descriptors (TLV)
    13. 6.13 Memory
      1. 6.13.1 Peripheral File Map
    14. 6.14 Identification
      1. 6.14.1 Revision Identification
      2. 6.14.2 Device Identification
      3. 6.14.3 JTAG Identification
  7. 7Applications, Implementation, and Layout
    1. 7.1 Device Connection and Layout Fundamentals
      1. 7.1.1 Power Supply Decoupling and Bulk Capacitors
      2. 7.1.2 External Oscillator
      3. 7.1.3 JTAG
      4. 7.1.4 Reset
      5. 7.1.5 Unused Pins
      6. 7.1.6 General Layout Recommendations
      7. 7.1.7 Do's and Don'ts
    2. 7.2 Peripheral- and Interface-Specific Design Information
      1. 7.2.1 ADC12_B Peripheral
        1. 7.2.1.1 Partial Schematic
        2. 7.2.1.2 Design Requirements
        3. 7.2.1.3 Detailed Design Procedure
        4. 7.2.1.4 Layout Guidelines
      2. 7.2.2 LCD_C Peripheral
        1. 7.2.2.1 Partial Schematic
        2. 7.2.2.2 Design Requirements
        3. 7.2.2.3 Detailed Design Procedure
        4. 7.2.2.4 Layout Guidelines
  8. 8Device and Documentation Support
    1. 8.1  Getting Started and Next Steps
    2. 8.2  Device Nomenclature
    3. 8.3  Tools and Software
    4. 8.4  Documentation Support
    5. 8.5  Related Links
    6. 8.6  Community Resources
    7. 8.7  Trademarks
    8. 8.8  Electrostatic Discharge Caution
    9. 8.9  Export Control Notice
    10. 8.10 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Detailed Design Procedure

A major component in designing the LCD solution is determining the exact connections between the LCD_C peripheral module and the display itself. Two basic design processes can be employed for this step, although in reality often a balanced co-design approach is recommended:

  • PCB layout-driven design
  • Software-driven design

In the PCB layout-driven design process, the segment Sx and common COMx signals are connected to respective MSP430 device pins so that the routing of the PCB can be optimized to minimize signal crossings and to keep signals on one side of the PCB only, typically the top layer. For example, using a multiplexed LCD, it is possible to arbitrarily connect the Sx and COMx signals between the LCD and the MSP430 device as long as segment lines are swapped with segment lines and common lines are swapped with common lines. It is also possible to not contiguously connect all segment lines but rather skip LCD_C module segment connections to optimize layout or to allow access to other functions that may be multiplexed on a particular device port pin. Employing a purely layout-driven design approach, however, can result in the LCD_C module control bits that are responsible for turning on and off segments to appear scattered throughout the memory map of the LCD controller (LCDMx registers). This approach potentially places a rather large burden on the software design that may also result in increased energy consumption due to the computational overhead required to work with the LCD.

The other extreme is a purely software-driven approach that starts with the idea that control bits for LCD segments that are frequently turned on and off together should be co-located in memory in the same LCDMx register or in adjacent registers. For example, in case of a 4-mux display that contains several 7-segment digits, from a software perspective it can be very desirable to control all 7 segments of each digit though a single byte-wide access to an LCDMx register. And consecutive segments are mapped to consecutive LCDMx registers. This allows use of simple look-up tables or software loops to output numbers on an LCD, reducing computational overhead and optimizing the energy consumption of an application. Establishing of the most convenient memory layout needs to be performed in conjunction with the specific LCD that is being used to understand its design constraints in terms of which segment and which common signals are connected to, for example, a digit.

For design information regarding the LCD controller input voltage selection including internal and external options, contrast control, and bias generation, see the LCD_C Controller chapter in the MSP430FR58xx, MSP430FR59xx, MSP430FR68xx, and MSP430FR69xx Family User's Guide.

For additional design information, see Designing With MSP430 and Segment LCDs.