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Systemyde International
Target Applications
Systemyde International
Y90
Targets: General Purpose, Military & Aerospace
The Y90 microprocessor is an upgrade of the venerable Z80 and Z180. The Y90 uses a uniform two-clock machine cycle and provides direct interface to either external memory or memory IP. The Y90 design is available in three versions: the Y90 CPU consists of the processor only while the Y90-180 contains the peripheral functions present in the original Zilog Z180.
The Y90 microprocessor surrounds the processor with a number of modules to support operation with an RTOS. This includes a memory management unit, an interrupt controller, a DMA request controller, a watch-dog timer, real-time interrupt for time-slicing, and various fault monitors. The Y90 microprocessor targets high-reliability military/aerospace applications with fault monitors, including timeout limits on Wait requests and DMA requests, an illegal machine state detect, and dedicated WDT instructions for Arm and Reset.