Microcontroller Week 4

What does the WR do to the memory chip?

• It lets the data of the memory chip be written

• It lets the data of the memory chip be read

• It allows access to the memory chip

• It lets the data of the memory chip be read & written

What does the RD do to the memory chip?

• It lets the data of the memory chip be written

• It lets the data of the memory chip be read

• It allows access to the memory chip

• It lets the data of the memory chip be read & written

What does the CS or EN do to the memory chip?

• It lets the data of the memory chip be written

• It lets the data of the memory chip be read

• It allows access to the memory chip

• It lets the data of the memory chip be read & written

Which data is contained in the data bus D_7-0, for an address signal of 101?

(a)  

Which data is contained in the data bus D_7-0, for an address signal of 011?

(a)  

A memory system has 16 address lines. With 4-bit registers each, what is the total capacity of the memory in bit?

(a)  

A processor is capable of 16 address lines and 8 bit data lines. Two memory chips are attached to the processor, each has 8 address lines with 8-bit registers. What is the total memory capacity of the system?

• 2048 bit

• 524288 bit

• 65536 byte

• 256 byte

A processor is capable of 12 address lines and 8 bit data lines. 20 memory chips are available, each has 8 address lines with 8-bit registers. What is the total memory capacity of the system?

• 32768 bit

• 40960 bit

• 5120 byte

• 2048 byte