DS89C430/DS89C450 Ultra High-Speed Flash Microcontroller Memory Interface Timing

By: Kevin Self

Abstract: The Dallas Semiconductor DS89C430 ultra high-speed microcontroller is a 1-clock-per-machine-cycle device. The DS89C430 can be used as a drop-in replacement for older 8051 architecture designs. However, memory interface timing must be evaluated. This application note addresses the five supported bus modes when using the DS89C430 microcontroller.