Hardware Hacking Switch OLED 256gb NAND upgrade

evil_santa · May 14, 2023

I'm looking rn to get those chips
I'll update this post every time I find a supplier.

It seems there is another manufacturer for 512gb emmc Chips.
https://namu.wiki/w/eMMC

https://www.symmetryelectronics.com/products/silicon-motion/sm662pbf-bess/

New emmc manufacturer for 512gb emmc
https://estore.flexxon.com/products/emmc-5-1-153ball-axo?variant=44197847531707

zal16 · May 17, 2023

and there I go to do another memory upgrade

Flaviocarvalho · Jun 4, 2023

Please...anyone can mark on the picture below the points (pads) that are absokutly needed for the switch to work? I have a emmc with few broken pads and want to know if worth the reballing. If anyone can mark for me the absolut necessary i apreciate

Johnny_debt · Jun 4, 2023

Flaviocarvalho said:
Please...anyone can mark on the picture below the points (pads) that are absokutly needed for the switch to work? I have a emmc with few broken pads and want to know if worth the reballing. If anyone can mark for me the absolut necessary i apreciate

You'll need all those except for RFU for it to fully function. But I think if you're missing DAT lines it will go into slow mode.

Flaviocarvalho · Jun 4, 2023

Johnny_debt said:
You'll need all those except for RFU for it to fully function. But I think if you're missing DAT lines it will go into slow mode.

Even if they have the same function? For example....i see a lot of vdd pins

Johnny_debt · Jun 4, 2023

Flaviocarvalho said:
Even if they have the same function? For example....i see a lot of vdd pins

VDD is interconnected on the mainboard, so is VDDF. However I'm not sure if they are interconnected on the emmc chip. Did you lose the pads on the emmc chip or on the mainboard?

evil_santa · Jun 4, 2023

Flaviocarvalho said:
Please...anyone can mark on the picture below the points (pads) that are absokutly needed for the switch to work? I have a emmc with few broken pads and want to know if worth the reballing. If anyone can mark for me the absolut necessary i apreciate

Send pic from your broken emmc and mark the defective pins.
I can say what's needed.
I recommend to dump it externally.

doom95 · Jun 4, 2023

the pads that are most likely to lift are the ones without traces attached, i.e. the ones which are of no consequence when lost

Flaviocarvalho · Jun 4, 2023

Johnny_debt said:
VDD is interconnected on the mainboard, so is VDDF. However I'm not sure if they are interconnected on the emmc chip. Did you lose the pads on the emmc chip or on the mainboard?

On the emmc

Post automatically merged: Jun 4, 2023

evil_santa said:
Send pic from your broken emmc and mark the defective pins.
I can say what's needed.
I recommend to dump it externally.

One of them im sure its broken...the other ones i dont know...the first picture shows the entire emmc...the second show the points i dont know if is broken

Johnny_debt · Jun 5, 2023

It's hard to tell from your close up pictures. The picture with the whole eMMC in view don't appear to be losing any pads except for the one next to the index pin (looks darkened). I think this is a NC pad. You can try scraping that pad lightly with a tweezer to see if it is truly gone. Sometimes they appear gone but it's just covered in a thin film.

evil_santa · Jun 5, 2023

Flaviocarvalho said:
On the emmc

Post automatically merged: Jun 4, 2023

One of them im sure its broken...the other ones i dont know...the first picture shows the entire emmc...the second show the points i dont know if is broken

Hmm hard to see, best is you mark the broken pins on the emmc pinout picture.
It could be also corrosion and it looks like a ripped pad.

Flaviocarvalho · Jun 6, 2023

evil_santa said:
Hmm hard to see, best is you mark the broken pins on the emmc pinout picture.
It could be also corrosion and it looks like a ripped pad.

I reballed...these pins did not soldered...i think if i put the solder ball on it it will solder but i dont wanna stress the emmc with heat....and none of them is marked wjth nothing so i think its NC. Do you think i can leave it whitout the balls or worth try to reball then?

evil_santa · Jun 6, 2023

Flaviocarvalho said:
I reballed...these pins did not soldered...i think if i put the solder ball on it it will solder but i dont wanna stress the emmc with heat....and none of them is marked wjth nothing so i think its NC. Do you think i can leave it whitout the balls or worth try to reball then?

Yes absolutely fine, there are NC and it's working fine whiteout solder balls.

zal16 · Jul 26, 2023

evil_santa said:
I'm looking rn to get those chips
I'll update this post every time I find a supplier.

It seems there is another manufacturer for 512gb emmc Chips.
https://namu.wiki/w/eMMC
View attachment 371367

https://www.symmetryelectronics.com/products/silicon-motion/sm662pbf-bess/

New emmc manufacturer for 512gb emmc
https://estore.flexxon.com/products/emmc-5-1-153ball-axo?variant=44197847531707

Another player entered on the select 512GB eMMC group. The MICRON!

With model MTFC64GAZAQHD-AIT

https://www.micron.com/products/managed-nand/emmc/part-catalog/mtfc64gaxaqea-wt

I definitivelly buy then if available!!!!!

Edit: False alarm guys, the Micron's site is listing erroneuosly a 64GB chip (512Gbit)

FR0ZN · Sep 17, 2023

zal16 said:
Another player entered on the select 512GB eMMC group. The MICRON!

With model MTFC64GAZAQHD-AIT

https://www.micron.com/products/managed-nand/emmc/part-catalog/mtfc64gaxaqea-wt

I definitivelly buy then if available!!!!!

Edit: False alarm guys, the Micron's site is listing erroneuosly a 64GB chip (512Gbit)

MTFC64GAXAQEA-WT is what you ars looking for.

evil_santa · Sep 17, 2023

FR0ZN said:
MTFC64GAXAQEA-WT is what you ars looking for.

It's a 64gb emmc chip
The 512 are GBits

Hassal · Sep 17, 2023

evil_santa said:
It's a 64gb emmc chip
The 512 are GBits

No that's 512GB alright. I think that's the only flash with parallel interface on this capacity

Nephiel · Sep 17, 2023

Hassal said:
No that's 512GB alright. I think that's the only flash with parallel interface on this capacity

It is 512Gbit = 64GByte. The size is also in the product code: MTFC64GAXAQEA.

From the available datasheets, there is no 512GByte variant available in that range.

Hassal · Sep 17, 2023

Nephiel said:
It is 512Gbit = 64GByte. The size is also in the product code: MTFC64GAXAQEA.

From the available datasheets, there is no 512GByte variant available in that range.

Density is written 512GB which is not what you're alluding to. You cannot have 64GB in your part number and have 512GB density.

From micron pages you can clearly see it written as capital B as in Bytes not bits to be consistent with the rest.

Though after thinking more about it I believe there's an error perhaps 512GB was a mistake. No way to find out until these micron b!tches open up their datasheets to the public not just their business partners.

evil_santa · Sep 17, 2023

Doesn't matter, the chip is available on Mouser vor 5,71€...
It's never ever a 512gb emmc chip.
These two are 512 GB chips.
Ferri emmc (Silikon Motion)
SM662PBF-BESS 512gb

Flexxon
FEMC512GBG-E540 512gb

Hardware Hacking Switch OLED 256gb NAND upgrade

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