8085 vs 8086: Key Microprocessor Differences
By RF Wireless Expert Team
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This article explores the differences between the 8085 and 8086 microprocessors. We’ll cover their architecture, programming instructions, and other key features.
8085 Microprocessor Overview
This section provides a concise overview of the 8085 microprocessor, including its architecture and programming aspects.
8086 Microprocessor Overview
Here, we offer a brief look at the 8086 microprocessor and its main functionalities.
8085 vs 8086: A Detailed Comparison
The following table highlights the core differences between the 8085 and 8086 microprocessors:
| Feature | 8085 Microprocessor | 8086 Microprocessor |
|---|---|---|
| Data Width | 8-bit | 16-bit |
| Address Lines | 16-bit | 20-bit |
| Data Bus | 8-bit | 16-bit |
| Clock Speed | 3 MHz | 5, 8, or 10 MHz (versions) |
| Flags | 5 | 9 |
| Pipelining | Not Supported | Supported |
| Clock Cycle Duty Cycle | 50% | 33% |
| Memory Segmentation | Not Supported | Supported |
| Transistor Count | ~6500 | ~29000 |
| Processor Type | Accumulator-based | General-purpose register-based |
| Operating Modes | None (single mode) | Minimum and Maximum modes |
| Number of Processors | Single processor | Multiple processors (external support) |
| Memory Capacity | 64 KB | 1 MB |
In summary, the 8086 is a more advanced processor with a wider data bus, more addressable memory, and support for features like pipelining and memory segmentation. The 8085, on the other hand, is a simpler and less powerful processor.