Digital Systems: Principles and Design

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Digital Systems

FIGURE 17.5 Model of a RAM IC chip numbered 6116 having 2048 arrays of octet of eight cells each and called 2k ´ 8 RAM.

The 6116 has 24 pins: (i) 11 address input pins to its internal decoder, (ii) two supply

pins V

DD

and V

SS

(5 V and GND), (iii) eight data input cum output pins, and (iv) three con-

trol pins,

RD

,

WR

,

CS

Figure 17.5 gives pins used in an IC semiconductor memory 6116

This IC is used as a static RAM of 2 KB.

Points to Remember

Address bus carries the address in the encoded format. It connects to a internal decoder

of the RAM and that decodes an address to make the appropriate byte available.

Data bus connects to internal ...