DJ🌞

@[email protected]
779 Followers
168 Following
3.9K Posts
I break things and void warranties. Encryption extremist. Adversarial archivist. 100% no-LLM pure-organic BS.
Fun fades, but irritation is infinite.
⚠️Private account. All toots are licensed under the MIT license.
#NoBridge
🤍❤️🤍 🇺🇦
Bloghttps://dev-zzo.github.io/blarg/
Patreonhttps://patreon.com/NakedSilicon
DJ🌞22h ago
DJ🌞1d ago

Hi! A little bit late in the day, but #nakeddiefriday is still happening today.

And today's exhibit is TC8568AM by Toshiba. This is a VFO to be used in floppy disk controllers. This is made very prominent on the die itself. Interesting how such a discrete part was still made in early 90s, where I kind of expected them to be replaced by fully integrated parts. A really short thread will follow.

Full-res map: http://infosecdj.net/map/toshiba/tc8568am/infosecdj_mz_nikpa40x_66p/

Many thanks to @RueNahcMohr for supplying this sample!

#electronics #reverseengineering #microscopy

DJ🌞1d ago
Henryk Plötz1d ago

Ok, fellow hackers, I propose a pact: That new EU age verification app thingy ... do NOT help improve it.

Don't publish findings. Don't responsibly disclose insecurities. Don't facilitate them making it bulletproof.

If personal data is directly at risk, by all means, slam their asses into the ground. GDPR them into oblivion.

But on its core functionality this needs to be, to become, and to stay, the most insecure, the most easily circumventable piece of shit code on the planet.

Show threadDJ🌞1d ago

This was a rather welcome diversion from the long-running deprocessing project, with large devices and perfectly readable cells. I hope you enjoyed looking at it as much as I did.

And that'd be it for the day. Just wanted to remind that I am always happy to accept donations in any way or form, whether of samples, materials for processing them, or simply a fiver a month. All the links are in my profile.

I wish you all a nice rest of this Friday and an amazing weekend to go with it. Until next time!

Show threadDJ🌞1d ago
The crystal oscillator circuitry is stuck between two I/O blocks and covered by metal-2.
Show threadDJ🌞1d ago

The standard cell library used elsewhere on the die looks rather unusual; both poly and diffusion features make large excursions outside power distribution rails.

At the top of the snippet is what looks like an autorouter bug.

Show threadDJ🌞1d ago
At the bottom of the die are several pieces of special CMOS circuitry, I suspect this is where the VCO lives. Several prominent capacitor structures can be seen, formed between the poly layer and the substrate.
Show threadDJ🌞1d ago
In the bottom left corner we have what looks like a die ID (D930 0001A) along with e-test features. These are two transistors with a common gate wire, which apparently has an ESD protection diode as well.
DJ🌞1d ago

Hi! A little bit late in the day, but #nakeddiefriday is still happening today.

And today's exhibit is TC8568AM by Toshiba. This is a VFO to be used in floppy disk controllers. This is made very prominent on the die itself. Interesting how such a discrete part was still made in early 90s, where I kind of expected them to be replaced by fully integrated parts. A really short thread will follow.

Full-res map: http://infosecdj.net/map/toshiba/tc8568am/infosecdj_mz_nikpa40x_66p/

Many thanks to @RueNahcMohr for supplying this sample!

#electronics #reverseengineering #microscopy

DJ🌞1d ago
Matt Venn2d ago

To help guide us over the next year, we’d really appreciate 2 minutes of your time to fill out this short survey:

https://forms.gle/tvcbz5R6iXV3Fin67

As a thank-you, one lucky respondent will win a genuine 150mm silicon wafer.

DJ🌞2d ago
Bill Minarik2d ago

A garnet muscovite schist in cross-polarized light. Horizontal field of view ~ 4cm.

#ThinSectionThursday #Schist #Metamorphic #Pelite