Hardware Design

The following clip shows the process of entering a schematic for an 8051 with external memory. External memory consists of a 32k byte static ram (SRAM). The memory is used to implement external code as well as data memory for the 8051. In order to accomplish this, students add an octal latch, the 32k byte SRAM, address and data bus connections, and an active low OR gate (nor2b2) to OR the two signals PSEN/ and RD/ to provide an output enable for the SRAM.

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Last Modified 14-Feb-1999