We love microchips

- That's why we boil them in acid.

January 1, 2020

1977 Unisonic Blackjack - Rockwell A4821 PMOS uC : weekend die-shot

You can read about reverse engineering of this chip here (+following parts) and here, some information about the game is here.


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December 9, 2019

Infineon BFP540FESD - 30Ghz fT NPN BJT : weekend die-shot

Not often we see multiple metal layers in BJT's. Die size 246x223 µm.


December 7, 2019

TI LMV321 - general purpose 5V opamp: weekend die-shot

Significantly smaller than ST TS321, but low-voltage only. New designs though should use LMV321A.
Die size 635x567 µm.


December 1, 2019
November 17, 2019
October 30, 2019

National MC74HC182N - ALU Carry Look-ahead : weekend die-shot

Die size 2063x1635 µm.

Used back in the days when you built CPU's from TTL chips. Some still do it though : https://www.homebrewcpuring.org/
I hope one day I will have enough time to build one...


With metal etched: