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上文讲述高集成度现场可编程门阵列(FPGA)和复杂PLD(CPLD)的许多新结构,厂家提供的基于RAM的FPGA已达到10万个门的集成度,与门阵列相当.电可擦的、紫外线可擦的和一次性可编程的反熔丝FPGA也有类似的新发明.它们使设计师在设计系统时有了更多的解决办法;这些系统需要可编程器件带来的灵活性,但其需要量又不值得使用掩模编程的门阵列.虽然迄今为止的大部分开发工作都放在数字逻辑上,但混合信号系统的设计师也开始注意可编程技术的好处.International Microelectronic Products公司推出的第一个可编程模拟阵列使模拟系统设计师可以在系统中重新进行编程,并拥有很广泛的模拟资源(请
While many of the new architectures for highly integrated field-programmable gate arrays (FPGAs) and complex PLDs (CPLDs) are described above, the manufacturers’ offering of RAM-based FPGAs has achieved 100,000 gates of gate integration equivalent to gate arrays. Similar to the new inventions of UV-erased and one-time programmable anti-fuse FPGAs, designers have more options in designing systems that require the flexibility of programmable devices, However, it does not require the use of mask-programmed gate arrays.Although much of the development effort so far has been on digital logic, designers of mixed-signal systems are also beginning to notice the benefits of programmable techniques International Microelectronics Products The first programmable analog array introduced allows analog system designers to reprogram in the system and has a wide range of analog resources