单片机作业

8-4已知8031扩展了一片2716程序存储器芯片，其片选信号CE端与P2.6相连，分析该2716占用了多少个重叠的地址范围？写出各个地址空间。答：存储容量为2KB的2716有11根地址线（A0~A10），8根数据线。该2716芯片的地址范围是：*0***00000000000B*0***11111111111B共占用了16个重叠的地址范围。地址范围0000H～07FFH0800H～0FFFH1000H～17FFH1800H～1FFFH2000H～27FFH2800H～2FFFH3000H～37FFH3800H～3FFFH8000H～87FFH8800H～8FFFH9000H～97FFH9800H～9FFFH0A000H～0A7FFH0A800H～0AFFFH0B000H～0B7FFH0B800H～0BFFFH8-7对8051单片机扩展1片2732和一片6232，并根据电路图写出能够访问到它们的地址范围。答：因为已有元件库无6232，故采用6264代替6232工作，除最高位要接地，基本无区别。2732范围：****000000000000B****FFFFFFFFFFFFB地址范围0000H～0FFFH1000H～1FFFH2000H～2FFFH3000H～3FFFH4000H～4FFFH5000H～5FFFH6000H～6FFFH7000H～7FFFH8000H～8FFFH9000H～9FFFH0A000H～0A7FFH0B000H～0BFFFH0C000H～0CFFFH0D000H～0DFFFH0E000H～0EFFFH0F000H～0FFFFH6264范围：0***000000000000B0***FFFFFFFFFFFFB地址范围0000H～0FFFH1000H～1FFFH2000H～2FFFH3000H～3FFFH4000H～4FFFH5000H～5FFFH6000H～6FFFH7000H～7FFFH