6502.org Forum  Projects  Code  Documents  Tools  Forum
It is currently Tue Nov 12, 2024 3:39 pm

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: 2864 EEprom
PostPosted: Wed Mar 24, 2004 9:35 am 
Offline

Joined: Wed Sep 03, 2003 7:41 pm
Posts: 4
I'd like to begin experimenting with some IC's and other basic electronic parts. But I'm new at it. My first step is to collect some of the parts I think I will be needing.

The parts (IC's) I've collected so far are as follows:

6502 CPU
6522 VIA
Z80 CPU
Z80 PIO
3to8 Decoder IC
64k x 4 Ram (handfull of these)

But now I need some sort of ROM. In particular some EEprom. What I'm currently looking at are 2864 8k x 8 EEprom's. But I have a question on it. Is there any major difference between the 2864 EEprom and something like the 28HC64 EEprom. Is there any reason either would not be compatible with the parts I've already purchased? Is one more sensitive then the other? In other words, is the 28HC64 much harder to handle because of the possiblity of short circuiting the ROM with static electricty.


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Wed Mar 24, 2004 2:35 pm 
Offline
User avatar

Joined: Fri Aug 30, 2002 1:09 am
Posts: 8539
Location: Southern California
Generally all the LSI is static-sensitive, even those parts that don't have a "C" in the identifier. Your '138, if it's 74LS138, is not particularly static-sensitive, but everything else you mention is. These parts do have protection diodes built in, but they can only handle so much. If you're going to work with this stuff at all, you should:
A. have an antistatic mat like Jameco sells and connect it to the grounded chasis of a piece of equipment on your workbench,
B. have the tip of the soldering iron connected to the mat or something that dissipates static, and
C. touch something grounded to discharge the static in your body before you touch static-sensitive parts.

I've never used more than this (like the writst strap, antistatic lab coat, antistatic flooring, humidifier, air ionizer, finger cots, or anything like that), and I've never damaged these parts with static. I've seen plenty of other people damage them by being careless though.


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Wed Mar 24, 2004 8:42 pm 
Offline

Joined: Wed Sep 03, 2003 7:41 pm
Posts: 4
Any compatibility issues between 28HC64 and 2864(without the HC). I'm a little confused on the difference between the two.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: