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Unit 7: Memory Interfacing
7.2 Basic Concepts in Memory Interfacing Notes
The primary function of memory interfacing is to allow the microprocessor to read from and
write into a given register of memory chip as shown in Figure 7.2.
1. Be able to select the chip
2. Identify the register
3. Enable the appropriate buffer.
Figure 7.2: Memory Interfacing
RAM is temporary memory so save important data in secondary memory.
7.2.1 Address Decoding
The process of address decoding should result in identifying a register with a given address; we
should be able to generate a unique pulse for that address as in Figure 7.3.
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