topic Re: AC60 Flash size - is the datasheet wrong? in 8-bit Microcontrollers

AC60 Flash size - is the datasheet wrong?

patsko — Fri, 14 Aug 2015 17:57:29 GMT

Hello,

I'm beginning to work with the S08AC60 and I found out that the datasheet (latest version: Rev. 3 8/2011) is conflicting about its Flash size.

At section 4.4.1, the datasheet says:

MC9S08AC60 — 61268 bytes (120 pages of 512 bytes each)

But looking at figure 4.1 (at the beginning of section 4.1) and calculating the Flash size based on the memory map, I came out with 63.280 bytes and 124 pages.

I also haven't found any errata about this on the MCU documentation.

Just as a comparison, I looked for the datasheet of a similar MCU (S08AW60) and it seems to be right, showing the Flash size as 63.280 bytes and 124 pages.

Can I assume that the S08AC60 datasheet is wrong and its Flash size is 63.280 bytes?

Re: AC60 Flash size - is the datasheet wrong?

david_diaz — Tue, 18 Aug 2015 23:50:35 GMT

Hello Luis Fernando,

It certainly looks like a documentation error.

In this case, the Figure 4-1 from the Reference Manual shows the correct information:

MC9S08AC60 FLASH Size: 63280 bytes.

I based my response on its corresponding .prm file:

ROM = READ_ONLY 0x1860 TO 0xFFAF;

ROM1 = READ_ONLY 0x0870 TO 0x17FF;

Hope this information will be useful for you.

Have a great day.

Best Regards,

David Diaz.

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