|Published (Last):||23 January 2013|
|PDF File Size:||3.77 Mb|
|ePub File Size:||19.6 Mb|
|Price:||Free* [*Free Regsitration Required]|
Sign up using Email and Password. This question has already fatasheet answered in some detail. You will have better chance of up-votes if you break up your wall of text into small paragraphs.
What here determines the size? ME high regardless of the! It is my first time using this. Ideally only D2 in the schematic would change because D1 is Hi, S1 is the only output that should go low in read mode! Whit3rd 4, 10 I assume that the memory enable should just stay low at all times, but I did try moving it around.
Also, for the inputs address and data input I did choose 4. I have been learning about the memory chip. Remember, both ME and WE need to be active low in order to write data to the chip. Then the switch is closed, then also LED D5 comes on. This is a follow up question to this question. I would hook the up as follows:. I bought two SN because I wanted to learn datasehet the memory chip works.
The SIP network is nice because you can plug it into your breadboard right next to the DIP switch, eliminating a lot of wires. Does this mean that I am doing something wrong, or have I broken the chip? If I connect the ME to high, then this behavior does not change. I just want to make sure that I understand before I do any damage. I had two of these that turned out to be broken see here datasheeet previous question on this.
Sign up using Facebook. Home Questions Tags Users Unanswered. Post as a guest Name. ME alone is lo and! Do I need some resistors somewhere in all of this? For LED drive, you do the same thing: Switch resistance of 0. Thanks for cleaning up the schematics. Related Posts.
Subscribe to RSS
7489 DATASHEET PDF
PDF 7489 Datasheet ( Hoja de datos )