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Out of curiosity what’s the cheapest microcontroller die you’ve come across? It would be interesting to know what you get at the lowest possible price point.
by klelatti 3y ago
Out of curiosity what’s the cheapest microcontroller die you’ve come across? It would be interesting to know what you get at the lowest possible price point.
- FirmwareBurner 3y agoThe cheapest mask ROM microcontrollers you can't buy from distributors but only directly from the manufacturer and in large volumes they can be a couple of cents since you buy the dies and package it yourself directly on the PCB under the classic black blob of resin you see in watches/calculators and other cheap dollar store widgets.
- klelatti 3y agoThanks! Do you know what you’d get for that couple of cents?
- FirmwareBurner 3y agoSomething like the EM MICROELECTRONIC EM6680 or the Seiko-Epson S1C63004 but a bit more spartan. Also parts from OKI/Lapis/ROHM semi (they do the dies for Casio watches and calculators) and I think some Chinese vendors who bought out operations form Toshiba/Sharp/NEC for similar old school parts.
- RetroTechie 3y agoOver on EEVblog there was talk of a 3 cents uC from Padauk: (w/ several follow-ups) https://www.eevblog.com/2018/11/07/eevblog-1132-the-3-cent-microcontroller/ https://www.eevblog.com/2018/11/07/eevblog-1132-the-3-cent-m... That 3c is packaged & all :-) One-time programmable iirc.
- klelatti 3y agoVery interesting. Thanks!