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T56 - M5M28F102J erase & program failed

T56 can't ERASE and PROGRAM for MITSUBISHI M5M28F102J .
wrong command data(D0-D15)?

VCC: 5V OUT OK
VPP: 12V OUT OK

Read: Successed
Erase: Failed (data remains)
Program: Failed

20220502_203628.jpg コメント 2022-05-02 203226.png

回复  OffGao

no useful at all. I tested with very low speed , can not  write to next address.
admin 发表于 2022-6-26 07:56


As an User.... Maybe this IC is very sensitive is this version PLCC44. If you ask for slower speed why not trying to handle the 'need for speed'. I've 3 sockets, two ZIF
from different sources, and the one you have , but no IC to test.
I would test at least with all of them, but with only one option, i can remember add a decoupling
power capacitor, as i can't have the socket in a black pcb version, neither the speed down
option....just guessing, it works partially now. Please try it if you understand what i'm trying
to tell  :-(

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回复 14# OffGao

no useful at all. I tested with very low speed , can not  write to next address.

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Hmm... Access may be too fast.
If you program it many times, it will gradually change to the correct value.
(ex: Write AA55, FFFF -> FEFF -> BEF7 -> AED7 -> AAD5 -> AA55)

I want an option to slow down access.

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回复 12# OffGao


   I tested more and more , but it can not be sloved.  programming logic is right.   It seems that the age of the chip is too old to be written.

Found :  after erasing,Disable erase before programming , then repeat programming more times. it can write into the first word, but cannot write the second word.


and M5M28F102 SOP40 is Normal.  I can't find the the problem.

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1201.png
I tried new Xgpro v12.01.
But, My M5M28F102J failed program.

READ: Success
ERASE: Success
PROGRAM: Failed

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回复 10# OffGao


   I have to get the chip to test!

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回复 9# admin

I tried new algorithm file.

READ: Success
ERASE: Success!!
PROGRAM: Failed

Erase Successed. My M5M28F102J was correctly blanked.

But, Program Failed... Only one word is written unstable.
Some modifications are needed.

m5m-2.png
m5m-3.png

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回复 8# OffGao

But M5M28F102J SOP40 is Normal,  they are same command.
please test with new algorithm with 0x2020
ROM40P91.alg (63.74 KB)

Replace it in the floder:  ?/xgpro/algorithm. After replacement, reopen the application software.

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回复 7# admin

20220506_013643.jpg
I tried using an oscilloscope.
After investigating, it was possible that I was sending the wrong command.

Erase Command required "2020H" and "A0A0H".
But, T56 Sending "0020H" and "00A0H".
It's wrong...

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回复 6# Albano.Matos


   I carefully proofread the algorithm and no errors found,    Test with SOP40 1.27mm is normal, but I don't have this chip of PLCC44, and it's hard to find

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回复  Albano.Matos


I looked it up.
All pins are connected(0Ω), and not shorted near pins.
A ...
OffGao 发表于 2022-5-4 11:19

As an User:.... Nice answer. Now Waiting , hopefully, Admin gave further tips or new answer.
Rgds

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回复 4# Albano.Matos

20220504_115958.jpg
I looked it up.
All pins are connected(0Ω), and not shorted near pins.
Also, It successed program for HN27C1024(PLCC44) with this adapter.
This PLCC to DIP Adapter is works.

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回复  admin
ttps://www.datasheets360.com/pdf/2009148678025692463
I'm checking the datasheet, this ...
OffGao 发表于 2022-5-3 23:08



    As an user... Just to add diagnostic info, please check ohm from every pin, to dip, and sure pin to pin with no high ohm between?

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回复 2# admin
ttps://www.datasheets360.com/pdf/2009148678025692463
I'm checking the datasheet, this chip doesn't seem to suported boot lock feature.
The data read after erasing was the same as the data before erasing.

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回复 1# OffGao


   If the IC is Boot Locked . the boot data canot be erased.  Check the data after the boot.  if all is  FF , the chip is boot locked.

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