Hi dazheng,
Need to know ... what is EEPROM used in MCU for ?. I know EEPROM stand for Electrical Erasable Programming ROM but I need to know what's the purpose or where it going to be used in MCU?
I ask this because some of MCU dont have EEPROM ( EEPROM = 0 byte) ie 80NC535 & 80NC321 and the best thing about this MCU (without EEPROM) that's its cheaper than MCU with EEPROM. If it just minor used and can solve it in other method (and not effect my project) , I will use it as I need to lower the cost as much as possible.
Any instruction (ie in proton) that must be used on MCU with EEPROM ?
More explanation greatly appreciated.
Thanks
zuisti
Hi "zuisti",
She wants the EEPROM for keeping the program when changed.
Will flash Magic Support this one ?
I happen to have a few pieces of this controller!!
I'm ready(?) with this work yet. It is a two mode (switchable) 8 char dot matrix display, working in Proteus, with source in javaC: I'm used a 89c734a.
- in scrolling mode it has a buffer for a max 54 chars message. The speed is controllable. - in static mode it is cascadable, set the position in the received string with the pos. switch.
The attached ZIP contains the orig. article (a PDF), as my start point. Please read it!
Please post here your minds!
I find article and it
EEPROM is only used for storing system configuration option i.e set point on temperature entered by user because you can't save them in volatile ram for next power on use.
We wont store temperatures so I think EEPROM is useless and no good.
The flash Magic works with the 80NC535 but I dont think 80NC321 is done(?) yet.I check with update for 89C734A.
Proton is better for the design of PCB but the RCF rope is difficult
Ignorte the messages from the trollop
Note This message was edited to reduce width.
"Proton is better for the design of PCB but the RCF rope is difficult"
You don't know what you're talking about. RCF rope is so simple my third grader uses it without any trouble at all.
"I started PCB already but I cant find (?) help on the RCF rope."
What kind of bonehead needs help with RCF rope? RCF rope is easy, a piece of cake.
Just Please read the manual.
Anyone who can think of anything more dense than a neutron star?
"The 80NC321 has a lot of register but I think it has EEPROM so we cant use it?"
Of course we can use it. You're being silly. Why do you doubt its usefulness?
"If we stored the latest statuses of it's operational condition in ROM then we could load our last state and continue the operation from there when the power comes back, without starting from the begining twice."
Again, silliness. ROM is Read Only Memory. We can't write to ROM, so we can't store our operational condition there.
dazheng,
Dont try to find the rope option.I looked on web and the version doesnt use it. it has an autostep menu.
How much space do we need for the statuses? bcoz do we need more than statuses than code?
yes i think the system could crash, but in my project i only use the key & the screen. if you think that the system would be stable. But my questions is what happens with Magic, maybe Magic dont like working without interruptions.i don't need to get back to sleep once my programm has finished. this is like an embedded project the pc only has to show the signal from the MCU in the screen.
ignore the trolops and they will get tired !)
"How much space do we need for the statuses?"
I think if we plan on 4 square inches, we'll be fine.
"bcoz do we need more than statuses than code?"
Yes, that's why 4 square inches. The code fits in a little less than 2.
"i don't need to get back to sleep ..."
Me neither. Our new project is so fun and exciting, who needs sleep?!!!
I was looking abot the circuit for atrication process i found this article:
Basically, there is no difference. The operational sequence is designed to handle analog signals as long as you do not overdrive it. This enables us to do a number of operations at the same time (log, antilog, invert,rectify, add, subtract etc.) on analog signals (i.e. signals which vary continuously). If you overdrive the MCU, then you can use it with digital signals too, though nobody will prefer that. There are much better options for signals above 122%. Negating the charge causes a positive overlap which throws the logic into an opposite contrajecture.
there are some bits i (?) dont understand but is it right area for project.
"there are some bits i (?) ..."
Why the '?' question mark? Are you doubting your existence?
I'm beginning to wonder about your participation in our project.
I may have to start looking elsewhere for someone more qualified.
"... dont understand but is it right area for project."
See, that's what I mean.
If you don't understand, what is your contribution and value to our project?
zuisti,
I want to use the 89c734a bcoz i think it has the pins we need. can you get the code done for it. can we take the EEPROM out of the MCU?
Do we need above 122%? how much?
"can we take the EEPROM out of the MCU?"
Sure, no problem. We'll pop the top and pull it out with non-conductive tweezers.
"Do we need above 122%? how much?"
No, I'm calculating that 7.3% less than that is closer to ideal.
"No, I'm calculating that 7.3% less than that is closer to ideal."
But that still leaves us at ~113%. How do we deal with greater than 100%?
Should we put the EEPROM back in the MCU to make up the difference?
"RCF rope is so simple my third grader uses it without any trouble at all."
Maybe dazheng, zuisti, et al could hire your 3rd grader as a Consultant?
Or would that just be money for old rope...?
"Dont try to find the rope option. I looked on web and the version doesnt use it."
Yes, I usually find that it's difficult to use options that don't exist!
"Maybe dazheng, zuisti, et al could hire your 3rd grader as a Consultant?"
Yes! As demonstrated by the dialog in this thread and their other threads in this forum, the team is in desperate need of improvement.
But don't forget that from the current level, improvement should not be so hard...
Even a blind hen...
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