Contents
What is 64k RAM?
The 64k RAM module uses 2 62256 static RAM chips for up to 64k of RAM in the RC2014. Jumpers allow you to set it to only 32k, 48k, 56k or 60k if you wish so you can use 32k, 16k, 8k or 4k of ROM, and a page pin allows for the lower 32k to be disabled.
What chips does RAM use?
This is the actual chip that is soldered onto small circuit boards in order to create RAM cards or sticks, and it is rated for performance and capacity differently, depending on the model and manufacturer. In the mobile device industry, the most common RAM chip used is DDR3, which has a storage capacity of 1 to 3 GB.
What is 4K 8 RAM?
The 7054 is a high-speed 4K x 8 FourPort™ Static RAM to be used where multiple access into a common RAM is required.
How many RAM chips are there per memory word?
The design calls for two chips per 16–bit word. One chip holds the high–order byte for the word. The other chip holds the low–order byte for the word. Suppose that a 2M x 16 main memory is built using 256K x 8 RAM chips and memory is word addressable.
How many 128×8 RAM chips are needed to provide?
Since 8 bits = 1 byte, Each RAM chip has 64 x 1 byte = 64 bytes. Thus the number of chips to address a memory capacity of 2048 bytes will be, 2048/64 = 32 chips.
How many 16K x 1 memory chips do I Need?
I am trying to figure out how many chips I need, and how the select lines and memory banks should be organized. I know I can use 8 of the 16K x 1 chips to create a 16K x 8 chip. My initial thought is that I would have 4 memory banks each containing 8 of the 16K x 1 chips, for a total of 32 chips.
Do you need decoder for 16K x 1 memory?
The only extra thing you need is a decoder for the two highest address bits. This is a 2-to-4 decoder which is then connected to the chip enable of the four banks of your memory. Usually the memory chips have both the address lines (14 in the case of 16kx1 chips) plus at least one CE (chip enable line).
How many address lines are in a 16Kx1 memory chip?
(BTW, if you have difficulties routing the address lines, you may rearrange them any way you want, as long as they are in the same order at each memory chip.) A 16kX1 has 14 address lines.