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QX3 On-Board DRAM

The digital imaging circuitry on the Intel QX3 microscope contains a 4 Mb DRAM (dynamic random access memory) chip to handle storage of images prior to transfer to the computer main RAM bank. The photomicrograph below is a reflected differential interference image of the surface of this chip.

Designed for high performance in portable computer systems and low-power peripheral applications like the QX3, this integrated circuit is part of the Mosel Vitelic lineup of random access memory chips. Code-named the V53C16258L, this 3.3 volt CMOS dynamic RAM chip offers Page mode with Extended Data Output and features a 256K x 16-bit organization.

The chip reads and writes data by multiplexing an 18-bit address into a 9-bit row and 9-bit column address with access times of 35, 40, 45, and 50 nanoseconds. Also featured are an optional self-refresh and a TTL interface.

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The QX3 microscope design is copyrighted © 1999 by Mattel, Inc. Intel® Play™ is a registered trademark of the Intel Corporation. These companies reserve all of their rights and privileges under copyright law. The material contained in this website is solely the opinion of the authors and is intended for eduational use only.
Last Modification Friday, Aug 01, 2003 at 10:42 AM
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