TMS470R1B1M writing to flash

Jian Chen

Other Parts Discussed in Thread: TMS470R1B1M

Hi,

I am using TMS470R1B1M. I need to write 1K bytes of data into the same block of the chip's internal F05 flash memory once every 4 seconds. Is there any code I can use?

Thanks,

Jian

over 12 years ago

0 Sunil Oak over 12 years ago

TI__Mastermind 49120 points

Hi Jian,

The F05 flash API provided by TI includes the routines you need to use to erase and program the flash. The minimum amount of memory that you must erase is one sector. The R1B1M device has all 64KB sectors, so that you have to erase 64KB at least each time before you program the updated 1KB.

Regards,

Sunil

0 Jian Chen over 12 years ago in reply to Sunil Oak

Intellectual 530 points

Hi Sunil,

Do you know how long it takes to erase the 64KB and then rewrite 1KB? We need to rewrite 1KB data every 5 seconds. The re-writing time has to be less than 300ms.

I downloaded F05a v36 flashAPI folder. Still do not know how to get started. Can you provide a small module to show how to write 1KB to TMS470R1B0M flash?

Thanks, Jian

0 Sunil Oak over 12 years ago in reply to Jian Chen

TI__Mastermind 49120 points

Hi Jian,

As per the flash timings in the datasheet, a sector erase itself typically takes 7 seconds. So you won't be able to erase a sector and reprogram 1KB every 5 seconds.

Regards, Sunil

0 Jian Chen94 over 9 years ago in reply to Sunil Oak

Intellectual 505 points

Where do I find the documents to show the time to erase and program internal flash?

Arm-based microcontrollers

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TMS470R1B1M writing to flash