APPLICATION NOTE 91

Microcontroller Design Guidelines for Reducing ALE Signal Noise

By: Kevin Self

Abstract: When using a Dallas Semiconductor high-speed microcontroller with external memory, noise from P0 switching could couple to ALE. With careful board layout and a good understanding of induced noise on a multiplexed address/data bus, these problems can be minimized. This application note looks at the DS80C320 high-speed microcontroller when accessing external memory.