T56 - M5M28F102J erase & program failed

OffGao

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

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2022-5-2 19:40

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2022-5-2 19:39

OffGao

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.

OffGao

回复 4# Albano.Matos

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2022-5-4 11:17

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.

OffGao

回复 7# admin

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2022-5-6 00:26

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...

OffGao

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.

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2022-5-9 20:47

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2022-5-9 21:09

OffGao

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2022-6-15 12:18

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

READ: Success
ERASE: Success
PROGRAM: Failed

OffGao

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.