Atmel’s 27C have additional features to ensure high quality and efficient sients may exceed data sheet limits, resulting in device non-conformance. Microchip 27C EPROM are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Microchip 27C EPROM. 27C 2-megabit K x 8 OTP Eprom Features. Fast Read Access Time – 55 ns Low Power CMOS Operation. µA max. Standby 25 mA max. Active at 5.
|Published (Last):||17 March 2006|
|PDF File Size:||12.86 Mb|
|ePub File Size:||12.3 Mb|
|Price:||Free* [*Free Regsitration Required]|
Users browsing this forum: Mon Dec 31, 3: Mon Sep 05, 9: I hate to ask stubid question but what is a flashrom? I guess my setup is a bit dated with the new fancy roms that I know datashedt about.
Tue Sep 06, 6: I dont realy know much about flashroms. Tue Sep 06, 3: Tue Sep 06, 4: Tue Sep 06, 5: The advantages of flash are it’s availability, price and potential capacity. Tue Sep 06, 8: Sorry, I wasn’t clear with my response.
Most EEPROM cannot be programmed in-circuit without providing a programming voltage, which is usually very high like 12v. Most flash can be programmed at Vcc in-circuit. This is very handy because you can create parallel port cable to connect to your PC on one side, and the cart connector on the other, and re-program your flash without even opening the plastic cover on the cart and without a programmer. You are absolutely right that flash is much cheaper, and with EEPROM going the way of datashewt dinosaur also much easier to obtain.
27C020 PDF Datasheet浏览和下载
I’m kinda noob in the electric part. Tue Sep 06, 9: I see any question I hight have dattasheet has already been asked and answered witch is nice, sept for dXtr’s witch I would also like more information on thanks, everyboady. Tue Sep 06, I noticed you talked about in-circuit programming.
Wed Sep 07, 4: I actually prefer 270c20 to Flash for minimalist jobs since they can just be written to at the byte level, no dealing with commands or sector nonsense. Page 1 of 2.
Previous topic Next topic.
Some of the advantages are that they can be erased electrically and re-programmed in-circuit no need to pull them out of the board, 27d020 need for UV lamp. They have some “quirks” like only being able to erase an entire block at a time, but that doesn’t negatively affect their use as ROM replacements. If you have a universal programmer, chances are it can erase at least the more popular Flash brands.
• View topic – What is the EEPROM equivalint to the 27C/27C EPROM
I actually prefer them to Flash for minimalist jobs since they can just be written to at the byte level, no dealing with commands datadheet sector nonsense ; Bregalad wrote: In-circuit programming is easy. As long as you don’t have mapper registers in the same location are ROM data. Find a flash or other chip that programs at 5V, and look in it’s datasheet and it will have all the info about how to do it.
I actually prefer them to Flash for minimalist jobs since they can just be written to at the byte level, no dealing with commands or sector nonsense It’s the fist time I heard it in that sense.
Overall, is there a list of advantage datasneet disadventages of each one? 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.