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From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.arch.embedded
Subject: Re: $0.03 microcontroller
Date: Wed, 10 Oct 2018 19:29:13 -0700
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Clifford Heath <no.spam@please.net> writes:
> <https://lcsc.com/product-detail/PADAUK_PADAUK-Tech-PMS150C_C129127.html>
> <http://www.padauk.com.tw/upload/doc/PMS150C%20datasheet%20V004_EN_20180124.pdf>
> OTP, no SPI, UART or I²C, but still...

That is impressive!  Seems to be an 8-bit RISC with no registers, just
an accumulator, a cute concept.  1K of program OTP and 64 bytes of ram,
enough for plenty of MCU things.  Didn't check if it has an ADC or PWM.
I like that it's in a 6-pin SOT23 package since there aren't many other
MCUs that small.