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CC2745R10-Q1: CC2745 flash & OTA memory arrangement

Jerry Kuo
Expert 4850 points

Part Number: CC2745R10-Q1

Hi team,

My customer ask some questions about flash size. Please help clarify. Thank you.

1. From CC2745R10 datasheet, Flash size is 1MB. However, the .map file only show length "0XE500" as below which is only 937KB. Are the remaining regions reserved for what kind of application ? (eg. CCFG, SCFG etc.)

OUTPUT FILE NAME:   <car_node.out>
ENTRY POINT SYMBOL: "resetISR"  address: 00048ccf

MEMORY CONFIGURATION

         name            origin    length      used     unused   attr    fill
----------------------  --------  ---------  --------  --------  ----  --------
  FLASH                 00000000   000e5000  000569b5  0008e64b  R  X
  NVS_SLOT              000e5000   00003000  00003000  00000000  R  X
  SRAM                  20000000   00028800  000165c8  00012238  RW X
  S2RRAM                40098000   00001000  00000000  00001000  RW  
  CCFG                  4e020000   00000800  00000800  00000000  R   
  SCFG                  4e040000   00000400  00000400  00000000  R   
  LOG_DATA              90000000   00040000  00000000  00040000  R   
  LOG_PTR               94000008   00040000  00000000  00040000  R   

2. For the example of car_node project, it uses 345KB (0x0x569B5 as above). If customer want to use          A/B partition for OTA. Are the remaining flash space is enough for below items ?

  • Bootloader
  • Dual image (A/B)
  • OTA relating data (eg. Metadata)
  • 0
    TI__Mastermind 41700 points

    Hi Jerry,

    96kB will be reserved for the HSM, the rest of flash will be used for app, NV, etc. 

    Car node itself has some code in it that should not be considered in the full numbers (i.e. menu system, etc). 

    Overall, I don't see any immediate issue with the question on #2, but will obviously depend on the customers bootloader and OTA related data.