Lecture_embedded systems engineering15.ppt

Embedded systems

1. Lecture # 15
Organization and Expansion
Techniques of Memory System

2. Read-Only Memories –Basic Structure

3. Accessing Read-Only Memories

4. Accessing Read-Only Memories –Read Cycle

5. Accessing Read-Only Memories

6. Expanding the Storage Capacity of EPROM

7. Expanding the Storage Capacity of EPROM

8. SRAM-Basic Structure

9. Expanding the
Storage Capacity of
Static RAM
Design a memory system
using Four 8k x 8 SRAM to
implement 16k x 16 storage
of SRAM.

10. Expanding the
Storage Capacity of
Static RAM

11. Expanding the
Storage Capacity of
Static RAM

12. DRAM-Basic Structure

13. Expanding the
Storage Capacity of
DRAM
Design a memory system
using sixteen 64k x 1
DRAM to implement
64k x 16 storage of DRAM.

14. Expanding the
Storage Capacity of
DRAM
Use Sixteen 64k x 1
DRAM to make a
circuit that will work
as DRAM of 64k x 16