Legacy microcontrollers Forum Discussions

Hello,

can any one provide the example  software for sector erase suspend command?

my requirement is to Erase a half of the sector and remaining data should not effect by using erase operation.

for example: I want to erase sector SA2 from 0x2000 to 0x4000 only.

But when am using the sector erase command the total sector is erased.

So any one help me for the same.

Thanks

Anil

I'm having a question about the FR60 MCU, inherited from Fujitsu.

Specifically, I am dealing with a part of the MB91460 series.

When enabling the I-Cache, the application supposedly loses messages on the CAN bus.

According to the datasheet (HW-Manual), only external memory (i.e. on the external bus) can be cached, so I preclude effects on peripheral registers at this point.

Is there any issues with this family's I-Cache known ?

A search for concerning errata yielded no results.

And, to add a follow-up question:

The document" MB91460 Series User’s Manual", Version 1.10, 2007-03-09 (Fujitsu document), section 12, "Instruction Cache", states there is an cache for external memory. Section 12.4, "Cacheable areas in the instruction cache" says: "The instruction cache can cache data only in external bus space."

The problem is:

This document/section also describes configuration registers (ISIZE at 0x000003C7, ICHCR at 0x000003E7), which do not show up in the datasheet, neither Fujitsu's last version, nor the latest Cypress version. These peripheral register address range is marked as reserved there (0x000394..0x0003EC). And to add to the confusion, the configurable sizes for _this_ cache (1k, 2k, 4k, off) are different from those of the internal Flash cache (off, 4k, 8k, 16k).

Can somebody shed some light on this issue ?

Update: using dhe Accemic MDE 2006 debugger, the ICHCR and ISIZE registers show up in the IO space at the proper addresses, but contain 0xFF and cannot be changed.

Thanks.

Hello,

Compiler shows error if there is a line like this:

tempValue = 0; u16 uwTempRegValue;

I know it can be simply fixed by separate them into two lines.

But our project has a automatic build for checking code coverage, and it will automatically add some 'check code' into codes like this:

ICOV(34);u16 uTmpRegValue;

And, it shows error.

So how to solve this problem?Any option for Softune?

Br,

Kim