Shifeng Wang
Abstract
By hardware programming the CPLD chip XC95144XL,all extenal interrupt singal are logic processed to trigger MCU interrupt,and the interrupt sources can be inquiried by the hardware logic of CPLD.which easily and effectively solves the technical problem of expanding interrupt sources of MCS-51 series MCU.
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By hardware programming the CPLD chip XC95144XL,all extenal interrupt singal are logic processed to trigger MCU interrupt,and the interrupt sources can be inquiried by the hardware logic of CPLD.which easily and effectively solves the technical problem of expanding interrupt sources of MCS-51 series MCU.
Key concepts: Interrupt, Complex programmable logic device, Microcontroller, Computer science, Embedded system, Interrupt handler, Computer hardware, Chip