The IIS Chip Gallery
HIIRI (1987)
Additional pictures below, click to see larger versions
by
| Application | Industrial |
| Technology | 2000 |
| Manufacturer | VLSI Tech |
| Type | Research |
| Package | DIP64 |
| Dimensions | 6400μm x 3200μm |
| Gates | 1 kGE |
| Voltage | 5 V |
| Clock | 10 MHz |
HIIRI is an optical mouse controller that would be able to detect the movement of a mouse without a special mousepad (this may sound strange, but earlier optical mice required a special mousepad with a tight grid to detect movement).
To detect movement 6 photodiodes in horizontal and vertical direction are integrated on the chip. Since the optical characteristics of the photodiodes for this technology was not known at the time, a series of photodiodes were integrated, these can be seen to the right and bottom of the picture.