EvilmonkeyzDesignz | 16K-bit UV EPROM @EvilmonkeyzDesignz | Uploaded March 2024 | Updated October 2024, 3 hours ago.
Link to the It's Pronounced "EPROM" T-shirt and other stuff:
evilmonkeyzdesignz.threadless.com
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#ComponentsCloseUp Number 259
Manufacturer: Eurotechnique
Part Number: ET2716Q-1
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The “E” logo on the part is for Eurotechinque, a company “founded in 1979 in Rousset, Bouches-du-Rhône as a joint-venture between Saint-Gobain of France and US-based National Semiconductor” - from the Wikipedia page on STMicroelectronics.
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This part is a 16K-bit (16,384) EPROM (Erasable Programmable Read-Only Memory) device that is able to be erased with UV light. The EPROM can be programmed electrically and erased multiple times, allowing for one device to be used for testing code before deploying it onto chips that can’t be erased, like PROMs.
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To erase the contents stored on the EPROM, an ultraviolet source of 2537Å can be used with the window exposed. This will erase the chip completely within about 15-20 minutes, according to the datasheet. If the window is not covered, the contents can slowly be corrupted and erased, due to UV light from the sun or other sources. This will usually take days or weeks to complete.
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This chip is interesting because something had caught my eye in one of the corners when I was looking at it under the microscope. To me it looks like it could possibly be a butterfly, or perhaps a pair of scissors. rareLEDs over on Instagram had opened up a different EPROM, the the NM27C32G from National Semiconductor, which put all the pieces of the puzzle together.
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On the NM27C32G is a silicon doodle of a wrist with a hand. One of the fingers has a bow tied on it, and there is a watch on the wrist with what looks like a national semi logo. Since Eurotechinque has some ties to National Semiconductor, it makes sense that they would share designs. This design probably used portions of the NM27C32G, but the other parts of the doodle were on different layers, or removed from this design entirely.
Link to the It's Pronounced "EPROM" T-shirt and other stuff:
evilmonkeyzdesignz.threadless.com
-
#ComponentsCloseUp Number 259
Manufacturer: Eurotechnique
Part Number: ET2716Q-1
-
The “E” logo on the part is for Eurotechinque, a company “founded in 1979 in Rousset, Bouches-du-Rhône as a joint-venture between Saint-Gobain of France and US-based National Semiconductor” - from the Wikipedia page on STMicroelectronics.
-
This part is a 16K-bit (16,384) EPROM (Erasable Programmable Read-Only Memory) device that is able to be erased with UV light. The EPROM can be programmed electrically and erased multiple times, allowing for one device to be used for testing code before deploying it onto chips that can’t be erased, like PROMs.
-
To erase the contents stored on the EPROM, an ultraviolet source of 2537Å can be used with the window exposed. This will erase the chip completely within about 15-20 minutes, according to the datasheet. If the window is not covered, the contents can slowly be corrupted and erased, due to UV light from the sun or other sources. This will usually take days or weeks to complete.
-
This chip is interesting because something had caught my eye in one of the corners when I was looking at it under the microscope. To me it looks like it could possibly be a butterfly, or perhaps a pair of scissors. rareLEDs over on Instagram had opened up a different EPROM, the the NM27C32G from National Semiconductor, which put all the pieces of the puzzle together.
-
On the NM27C32G is a silicon doodle of a wrist with a hand. One of the fingers has a bow tied on it, and there is a watch on the wrist with what looks like a national semi logo. Since Eurotechinque has some ties to National Semiconductor, it makes sense that they would share designs. This design probably used portions of the NM27C32G, but the other parts of the doodle were on different layers, or removed from this design entirely.
