SPRADL4 January   2025 F29H850TU , F29H859TU-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Differences Between EEPROM and On-Chip Flash
  6. 3 Overview
    1. 3.1 Basic Concepts
    2. 3.2 Single-Unit Method
    3. 3.3 Ping-Pong Method
    4. 3.4 Creating EEPROM Sections (Pages) and Page Identification
  7. 4 Software Description
    1. 4.1 Software Functionality and Flow
  8. 5 Single-Unit Emulation
    1. 5.1 User Configuration
      1. 5.1.1 EEPROM_Config.h
      2. 5.1.2 F29H85x_EEPROM.c
    2. 5.2 EEPROM Functions
      1. 5.2.1 Initialization and Setup Functions
        1. 5.2.1.1 Configure_Device
        2. 5.2.1.2 EEPROM_Config_Check
      2. 5.2.2 Page Mode Functions
        1. 5.2.2.1 EEPROM_GetValidBank
        2. 5.2.2.2 EEPROM_UpdateBankStatus
        3. 5.2.2.3 EEPROM_UpdatePageStatus
        4. 5.2.2.4 EEPROM_UpdatePageData
        5. 5.2.2.5 EEPROM_Write_Page
      3. 5.2.3 64-Bit Mode Functions
        1. 5.2.3.1 EEPROM_64_Bit_Mode_Check_EOS
        2. 5.2.3.2 EEPROM_Write_64_Bits
      4. 5.2.4 Functions Used in Both Modes
        1. 5.2.4.1 EEPROM_Erase
        2. 5.2.4.2 EEPROM_Read
      5. 5.2.5 Utility Functions
        1. 5.2.5.1 EEPROM_Write_Buffer
        2. 5.2.5.2 Erase_Bank
        3. 5.2.5.3 Set_Protection_Masks
        4. 5.2.5.4 Configure_Protection_Masks
        5. 5.2.5.5 Fill_Buffer
        6. 5.2.5.6 ClearFSMStatus
    3. 5.3 Testing Example
  9. 6 Ping-Pong Emulation
    1. 6.1 User-Configuration
      1. 6.1.1 EEPROM_PingPong_Config.h
      2. 6.1.2 F29H85x_EEPROM_PingPong.c
    2. 6.2 EEPROM Functions
      1. 6.2.1 Initialization and Setup Functions
        1. 6.2.1.1 Configure_Device
        2. 6.2.1.2 EEPROM_Config_Check
      2. 6.2.2 Page Mode Functions
        1. 6.2.2.1 EEPROM_GetValidBank
        2. 6.2.2.2 EEPROM_UpdateBankStatus
        3. 6.2.2.3 EEPROM_UpdatePageStatus
        4. 6.2.2.4 EEPROM_UpdatePageData
        5. 6.2.2.5 EEPROM_Write_Page
      3. 6.2.3 64-Bit Mode Functions
        1. 6.2.3.1 EEPROM_64_Bit_Mode_Check_EOS
        2. 6.2.3.2 EEPROM_Write_64_Bits
      4. 6.2.4 Functions Used in Both Modes
        1. 6.2.4.1 EEPROM_Erase_Inactive_Unit
        2. 6.2.4.2 EEPROM_Read
        3. 6.2.4.3 EEPROM_Erase_All
      5. 6.2.5 Utility Functions
        1. 6.2.5.1 EEPROM_Write_Buffer
        2. 6.2.5.2 Erase_Bank
        3. 6.2.5.3 Configure_Protection_Masks
        4. 6.2.5.4 Set_Protection_Masks
        5. 6.2.5.5 Fill_Buffer
        6. 6.2.5.6 ClearFSMStatus
    3. 6.3 Testing Example
  10. 7 Application Integration
  11. 8 Flash API
    1. 8.1 Flash API Checklist
      1. 8.1.1 Flash API Do's and Do Not's
  12. 9 Source File Listing
  13. 10Troubleshooting
    1. 10.1 General
  14. 11Conclusion
  15. 12References

3.3 Ping-Pong Method

If using Ping-Pong emulation, a second flash memory range is specified, and the emulation is divided into the Active Unit and the Inactive Unit. When the Active Unit is full and the EEPROM is updated, the unit designations will swap and the data is written to the new Active Unit. After the data is programmed, the Inactive Unit is safely erased without fear of data loss.

Ping Pong BehaviorFigure 3-2 Ping Pong Behavior