Repair manual

Extraneous

Some unnecessary information about the chip.

This page is dedicated to somewhat trivial information about the 24C02 non-volatile RAM chip that is

used to store the passwords and tags which was the focus of this site.

It will also serve to provide more information about why this particular chip was used, debunk the

claims of money-grubbing Hoodwinkers selling replacement chips for around ten times what they pay

for them, and offer options to the souls who have de-soldered or damaged their chips and not yet

bought one of these replacements, or received one which was damaged in transit (according to the

shipper.)

The <B24C02< b>microchip is a small microchip that can store up to 2048 Bits, or 256 Bytes of data.

This data can be read and written by a computer (or by another part of an electronic circuit.) In actual

practice is mostly read from, instead of written to. It uses a serial communication protocol bus called

C, which if you haven't heard of it, is a fairly common way for components inside the computer's

circuitry to exchange information. You can read all about it, if you want to:

The chip has 8 leads, can comes in a variety of shapes and sizes. It is part of a larger family of serial

storage chips which includes the 24LC02, 24C04, 24C06, and 24C16. (The last 2 numbers in the

name refer to the number of Kilo-Bits that the chip can store.)

The one which was used in the demonstration was a ceramic encased surface mount DIP chip which

is based on the design shown on the left.