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Category. Description, 16K 2K x 8 Parallel Eeprom with Software DATA Protection. Company, ST Microelectronics, Inc. Datasheet, Download 28C16 datasheet. It is offered only with the TSOP28 package. The reader should refer to the M28C17 datasheet for more information about the Ready/Busy func- tion. OPERATION. FAST ACCESS TIME: 90ns. SINGLE 5V ± 10% SUPPLY VOLTAGE. LOW POWER CONSUMPTION. FAST WRITE CYCLE: – 64 Bytes Page Write Operation.

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Their site has forums that may point you in the right direction. Writing was a bit different. Do they require an exact timing pulse to be applied to the “not WE” pin, in order to write to it? I’ve never used the Willem Programmer, I don’t sell it, etc.

28v16 hit on google: A RAM device, obviously, can be written to, about the same speed as it can be read. Subject of the new topic: Otherwise, you can write single bytes to it, by pausing after each byte.

If the user put the cable on wrong, the 74LS would turn into a 74LS mount st helens. What’s the deal with the ? The Group moderators are responsible for maintaining their community and can address these issues. The cell voltages are usually monitored and the programming procedure repeated by the programmer until the cells reach specified voltage levels when read back.

28C16A Technical Data

Anyone familiar with these parts? I got away with just using a 74C keyboard encoder, and feeding an inverted version of the “valid data” output from that, directly to “not WE” on the Dallas part. It was an ‘ad-hoc’ job, using pre-existing assemblies. Most new ones withwrite cycles, before data transfers get iffy. Egg on my face. If you write to the same address at dataasheet write per 10mS, you’d kill that byte in about 20 minutes.


Search Only Within This Topic. Most sane people don’t spend their time building clocks with antiquated technology! At 10mS per byte, it would get quite tiresome. Again, read the data sheet carefully and make sure it’s for the exact same device and manufacturer.

28C16 Datasheet PDF

It was the 70’s think polyester leisure suits. The ST Microelectronics part referenced above has a 64 byte page buffer, which means you can write up to 64 bytes to it – quickly – then pause and all 64 will program at once. I think it’s an open-source homebrew programmer — you can build it yourself or buy it already built. There was a most satisfying “BLAM!

Back when I just got started in the electronics business, I was working as tech and general slave. Some as low a 10, Chuck Richards Chuck, The is an electrically-erasable version of the And does anyone suspect that by NOT giving the a precisely timed pulse, that I may have damaged it? This cannot be undone. It depended on manufacturer.

That’s why several types of memory had similar pinouts, though hardwire jumpers also had to be set, due to the differences. Once I fixed that it has been great, and the blame goes to the Korean manufacture of my particular unit rather than the design itself.


A few months after I got it back, the same thing happened again. Sometimes 2 extra supplies. This situation was usually handled by either running the whole memory space for the slowest device, or for the fastest memory, and then adding ‘wait-states’ for the slower devices.

I have one of those, it works great. Being from the “so, use a bigger hammer” school of thought, I un- soldered the switcher and instead ran some cables from a nice Lambda 50A regulated bench supply to the programmer. To go even more off-topic There are algorithms coded into the programmers to hit the EPROM with the appropropriate voltages for specific time periods.

Thanks anyway for your valuable time. Number one rule of experimenting is to alway be sure to identify off spec parts to avaoiod re-using them as good ones. When I set up my shop a few years ago when I started grad school, I got a programmer from Conitec. The new topic will begin with this message. It reads just fine, but it won’t take any new data.

AT28CPC IC EEPROM 16K NS 24DIP Atmel datasheet pdf data sheet FREE from

It used an 8-pin TI switching chip to generate the programming voltages. It’s easy to find info on the 28C These requirements are different for different manufacturers and even different part numbers from the same manufacturer. Just Beyond the Fringe http: Been there and successfully done both.