MSP430I2040: Writing to flash area that does not exist

ReedKacz

Part Number: MSP430I2040
Other Parts Discussed in Thread: UNIFLASH

Hi MSP430 Experts,

What would you expect to happen if we tried to write flash into an area of flash that doesn’t exist on the part. For example if we write our program code into 0x8000 on a 16kB part.

The boards currently have both 32K and 16K variants of MSP430 installed, but we’ve noticed that if we program the 32K code onto the 16k parts we’re not seeing any errors being generated.

MSP430I2040TPWR (16K device)

MSP430I2041TPWR (32K device)

Thanks!

Reed

over 4 years ago

0 Evan Lew over 4 years ago

TI__Genius 10060 points

Hi Reed,

Are you doing a verification step when you program these devices? I would expect that fail on a 16K device if you have a program that is written outside the 16k boundary.

Regards,

Evan

0 ReedKacz over 4 years ago in reply to Evan Lew

TI__Expert 3687 points

Hi Evan,

So without a verification step, there would be no error or anything?

Could you share what verification step you would recommend? Like a read back of what was written?

Thanks,

Reed

0 Evan Lew over 4 years ago in reply to ReedKacz

TI__Genius 10060 points

Reed,

What tool are you using to program the devices? Uniflash has an option to verify (which I think does a readback).

Regards,

Evan

0 ReedKacz over 4 years ago in reply to Evan Lew

TI__Expert 3687 points

The customer is using Uniflash. I will ensure they are checking for proper readback.

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MSP430I2040: Writing to flash area that does not exist