6 inch Silicon wafer collectors set - DS87C520 CPU wafer and DS87C520 CPU chip. For Sale
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6 inch Silicon wafer collectors set - DS87C520 CPU wafer and DS87C520 CPU chip.
Price: US $107.50
The DS87C520/DS83C520 EPROM/ROM high-speed microcontrollers were fast 8051-compatible microcontrollers. They featured a redesigned processor core without wasted clock and memory cycles.
As a result, the devices execute every 8051 instruction between 1.5 and 3 times faster than the original for the same crystal speed. Typical applications will see a speed improvement of 2.5 times using the same code and the same crystal.
Wafer is 6 inches across (150mm) and was fabricated by Dallas Semiconductor in 1994. The wafer is in excellent condition, no scratches, chips, or other blemishes and over 200 CPUs are on it. The wafer colors will vary depending on viewing angle and lighting conditions. The processor chip is new looking condition, but untested (no scratches or chips in the package, no bent pins, no solder on the pins) .Photos were taken under ordinary incandescent room light. I've got a wide selection of other collectable wafers in my store.Thanks for looking!
