One of the features on an Intel 8085 microprocessor is an eight-bit microprocessor that can process, provide and accept eight-bit data simultaneously, as well as being able to access 64 kilobytes of memory using 16 built-in address lines and providing five built-in hardware interrupts. The Intel 8085 can also operate on a 5-volt power supply and access 256 I/O ports by providing eight-bit I/O addresses.
The Intel 8085 was first produced by Intel in 1977, and it stayed in production until the 1990s. The microprocessor was binary compatible with the Intel 8080 but had less supporting hardware requirements, which allowed the construction of more affordable and less complex microcomputer systems.
With a basic von Neumann design, the Intel 8085 pinned its eight-bit data bus to the 16-bit address bus, which allowed it to limit the number of pins on its surface to 40. Pin 40 and pin 20 on the microprocessor were used for the power supply and electric ground respectively.
At its introduction, the Intel 8085 microprocessor was able to support up to 74 instructions following five general addressing modes. As of 2014, the Intel 8085 is used for instructional purposes at multiple engineering schools as part of their introductory microprocessor courses.