Hi!
-
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
-
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
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.
-
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.
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.
-
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.
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.
-
R relay@relay.infosec.exchange shared this topic
