Reverse engineering the 76477 sound effect chip
IC

Reverse engineering the 76477 sound effect chip

Ken Shirriff has written an article on reverse engineering the 76477 “Space Invaders” sound effect chip: Remember the old video game Space Invaders? Some of its sound effects were provided by a chip called the 76477 Complex Sound Generation chip. While the sound effects1 produced...

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Inside the vintage 74181 ALU chip
IC

Inside the vintage 74181 ALU chip

Ken Shirriff writes: The 74181 ALU (arithmetic/logic unit) chip powered many of the minicomputers of the 1970s: it provided fast 4-bit arithmetic and logic functions, and could be combined to handle larger words, making it a key part of many CPUs. Inside the vintage 74181 ALU chip -...

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64-layer flash IC enables 1-Tbyte chips
IC

64-layer flash IC enables 1-Tbyte chips

Susan Nordyk @ edn.com writes: Toshiba has added a 512-Gbit (64-Gbyte), 64-layer flash memory device that employs 3-bit-per-cell TLC (triple-level cell) technology to its BiCS Flash product line. This technology will allow the development of 1-terabyte memory chips for use in...

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Bluetooth chip is only 4x4mm
IC

Bluetooth chip is only 4x4mm

by Julien Happich @ edn-europe.com: Part of the Swatch group, EM Microelectronic announced what the company believes to be the world's smallest Bluetooth chip. Offered in a 4x4mm QFN-28 package, in a WLCSP-21 or as a bare-die, the EM9304 is optimized for Bluetooth v4.2 low energy...

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Ultra-thin, high thermal conductivity substrate integrates ESD protection
IC

Ultra-thin, high thermal conductivity substrate integrates ESD protection

Clemens Valens @ elektormagazine.com discuss about a new IC substrate. He writes: A new, ultra-thin ceramic substrate with an ESD strength of up to 25 kV – more than three times higher than the standard 8 kV of state-of-the-art Zener diodes – also features a high thermal...

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ICStripBoard – PCB rapid prototyping tool
PCB

ICStripBoard – PCB rapid prototyping tool

  ICStripBoard is a innovative cheap tool to enable rapid prototyping of surface mount integrated circuits (IC’s) and allow their usage in prototype electronics projects. Inline surface mount IC’s come in a Variety of packages which are different sizes and these Printed...

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LTC4380 Overvoltage Protection
IC

LTC4380 Overvoltage Protection

Thomas Scherer @ elektormagazine.com writes: When it comes to protecting sensitive circuitry from potentially damaging over-voltage spikes and supply surges we usually resort to networks of coils, capacitors, resistors and suppression diodes to iron out the transients. The LTC4380...

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Inside the 74181 ALU chip: die photos and reverse engineering
IC

Inside the 74181 ALU chip: die photos and reverse engineering

A detailed die photos and reverse engineering of the 74181 ALU chip by Ken Shirriff: What’s inside a TTL chip? To find out, I opened up a 74181 ALU chip, took high-resolution die photos, and reverse-engineered the chip.1 Inside I found several types of gates, implemented with...

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