HC08AZ32 (mask 0J66D)

[kevfield]

Hi could anyone help me i have ETL 908 programmer and HC08AZ32 (mask 0J66D) from merc sprinter immo box i can read no probs but when i come to write back it never writes the data to the chip i read from address 0800-09FF data seems to be ok and i have corrected bad data to good but when i try to write back it never seems to work not sure if i am setting ETL programmer software up wrong ??

Thanks kev

[kazikk]

I have read/write 0J66D from Sprinter immo box without any problem.

try this connection :

2- IRQ ( lift )
3- RES (lift)
21 - GNd
22 - VCC
26 - PTA0 (lift)
60 - PTC0

[kevfield]

Thanks for reply the thing is i can read 100% ok just cant seem to write back i am reading off board with etl so no need to lift leg

Thanks kev

[Zmann]

Post the data of read EEPROM of the address FE1C (much scroll down)

[kevfield]

dont have read here but will in morning, size was 512 i think from line 0800-09ff

Thanks kev

[Zmann]

That's not of the user's EEPROM area, it's the locking mechanism byte.

[kevfield]

hmm ok you can help me with this then ???

Thanks kev

[Zmann]

The data should be read as F0 otherwise with two possibilities, deadly locked byte-any programming not possible or this locked byte is still editable. Let see.

[kevfield]

Zmann, do you have etl 908 programmer ? can you point me the right way please ??

Thanks kev

[Zmann]

Your problem maybe yes or no to this but just one point out.

Check the data in the red circled address, my sample case (az60) is '10', this MCU is mostly deadly locked and need to be bin unless with a very special tool !!

[kevfield]

ahhh ok i see now will look in morning this means that mcu can no longer be writen to, so i need to replace with new ?

thanks kev

[kevfield]

Address line FE10 = FF

[Zmann]

Now you find the cause, edit this byte to F0 in the unchanged-original EEPROM dump then program EEPROM (in OBP mode). Everthing should go fine now. If EEPROM dump is also needed to modify it can be done after this.

Wondering that why it was set as FF, did you hit EEPROM erase once before?

[kevfield]

Ok read a little more about the HC08AZ32 and with the help from Zmann for pointing me in the right direction once read full EEPROM i could see that at address FEC1 was set to F0 but once set to 10 i could write back to mcu job done.

Thanks kev

[Zmann]

Thanks for the feed back. But must not be '10' to AZ60, AZ60A, AS60, AZ32A and possibily AS60A too.

[sasaran]

pls start error red hc08 all memori pls

[sasaran]

pls start error hc08 red all memory upa