Although you would think that the 80187 is the next logical step from the 8087, the 80C187 was introduced in late 1988. In fact the 80287 was already on the market since 1983! However the design was based on the 387 and therefore could execute code written for the 387 (SX & DX). It was also compatible with the 8087 and 80287.
The 80C187 was designed to operate with the 80186 but not with the 80188. Because the 80C187 interface logic was not implemented on the 80188, this CPU cannot communicate with the 187.
In 1996 Intel ended the production of the 80C187 and also stopped the support. But many embedded designs used the 80C187. This opened up an opportunity for companies that could offer a replacement chip. Cast is such a company that produces the CTS80C187 NPU which can be used as a replacement for a defect Intel 80C187. Gesytec is a company that offers an emulator board which is based on a 486 CPU.
Intel produced the 80C187 with its CHMOS III manufacturing process at 1.5 microns. It was available in a 40 pin DIP and a 44 pin PLCC package. The following 80187 versions were available :
- D80C187-12 (DIP)
- D80C187-16 (DIP)
- N80C187-12 (PLCC)
- N80C187-16 (PLCC)
![](javascript:openImageWindow("http://www.cpu-info.com/img/cpu/80187/iD80C187-12-L.jpg","Intel 80C187-12")) |
![](javascript:openImageWindow("http://www.cpu-info.com/img/cpu/80187/iD80C187-16-L.jpg","Intel 80C187-16")) |