术语 | mask programmable |
释义 | mask programmable 可编程掩膜;[可程式化罩膜] A term applied to an integrated circuit read-only memory that is produced as a chip with 1-bits “written” in all bit positions.A special “mask” is produced to customer specification for controlling an etching operation to remove sections of metalized channel and thus to write 0-bits where required. After etching, final stages of encapsulation and test are performed. Masks are computer-generated from (usually) paper tape or punched cards supplied by the customer. 适用于集成电路只读存储器的一个术语。该电路在生产时,把芯片的所有比特位都写1, 然后按顾客的要求生产一个特殊掩膜,以便控制刻蚀操作,把金属化的通道部分去除, 使需要写“0”的地方写“0”。腐蚀之后执行封装和最后测试。掩膜通常由客户提 供的纸带或穿孔卡由计算机产生。 |
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