S12 / MagniV MicrocontrollersのトピックRe: About MC9S12Dx512's MMC-Memory-map file.

About MC9S12Dx512's MMC-Memory-map file.

yongpanan — Thu, 19 Oct 2017 07:32:26 GMT

I am now doing a bootloader based on the MC9S12DP512, but now I have some problems. Flash on the use of the time to use the address, I should use the global address or PPAGE configuration selection erase it. Can you give me a memory map? There is no single-chip internal address register? I can not find the relevant introduction in the chip manual.

Re: About MC9S12Dx512's MMC-Memory-map file.

lama — Thu, 19 Oct 2017 10:04:55 GMT

Hi,

there is no globla memory approach. In order to be access any part of the flash you can use 16bit address only for spaces 4000~7FFF and C000~FFFF which are also addressable via PPAGE access via pages 3E and 3F together with window 8000~BFFF.

Moreover, the memory map can be affected by modification registers INITRG, INITRM and INITEE.

The memory map can be found in the attachment.

Moreover, I have attached a SW which can help you to create your own bootloader.

Best regards,

Ladislav

Re: About MC9S12Dx512's MMC-Memory-map file.

yongpanan — Thu, 19 Oct 2017 12:06:39 GMT

Thanks,
About the An3275SW ,Can I used for MC9S12DP512 directly?
If no,Which module did i should to modify?
I was the first to use this chip。And the AN3275SW is too diffcult for me to understanding.

Re: About MC9S12Dx512's MMC-Memory-map file.

lama — Thu, 19 Oct 2017 21:08:56 GMT

Hi,

yes, you can us it directly. However, it is necessary to read the entire AN3275.pdf carefully.

Best reards,

Ladislav

Re: About MC9S12Dx512's MMC-Memory-map file.

yongpanan — Thu, 19 Oct 2017 23:48:56 GMT

Got it.

Thank you.