#6 Final Exam 6) 1. Complete the following Coincident Selection RAM chip design:

Question

#6

Final Exam 6) 1. Complete the following Coincident Selection RAM chip design: Fill in the blanks: RAMa If the given Address bits is: 0111 RAM 10: RAM w RAM" What is A3, A2- RAM What row decoder line is active ? Activating which RAM ? What is A1, A0 What column decoder line is active ? 10 bo Activating which RAM? b) Complete the following Coincident Selection RAM chip design: RAM al RAM ol RAM 01 10 If Address is 101 RAM ol RAN Row Decoder line? Activating RAM Column Decoder line? Activating RAM Therefore: Cell are activated 4

Explanation / Answer

a) A3 = 0, A2 = 1

Row Decoder line 1 is active.

RAM 4, 5, 6 and 7 is activated.

A1 = 1, A0 = 1

Column decoder line 3 is active

RAM 3, 7, 11, 15 will be activated

Final RAM cell activated by address 0111 is RAM 7

b)

Row decoder line is A2A1= 10. Hence line 2 is activated.

Activates RAM 8, 9, 10, 11

Column decoder line A0 = 1 . Hence line 1is activated

Activating RAM 2, 6, 10, 14, 3, 7, 11, 15

Cell activated is 10 and 11

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