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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Anyone familiar with these parts? Back when I just got started in the electronics business, I was working as tech and general slave.

If you write to the same address at one write per 10mS, you’d kill that byte in about 20 minutes. Some as low a 10, Most new ones withwrite cycles, before data transfers get iffy. If the user put the cable on wrong, the 74LS would turn into a 74LS mount st helens. They are not intended to hold actual program code, even though you could do this.

(PDF) 28C16 Datasheet download

What’s the deal with the ? Been there and successfully done both.

Just Beyond the Fringe http: Most sane people don’t spend their time building clocks 82c16 antiquated technology! Chuck Richards Chuck, The is an electrically-erasable version of the Both of them require interesting programming voltages and very fussy timing sequences to work.

When I set up my shop a few years ago when I started grad school, I got a programmer from Conitec. Search Only Within This Topic. Hello, Forgive this slightly off-topic question: What am I missing here?

28C16 (STMicroelectronics) – 16k 2k X 8 Parallel Eeprom With Software Data Protection

Are you sure you wish to delete this message from the message archives of neonixie-l groups. A few months after I got it back, the same thing happened again. This situation was usually handled by either running the whole memory space for the slowest device, or datasheer the fastest memory, and then adding ‘wait-states’ for the slower devices.


Two E’s instead of one Big difference.

28C16A-15 – 28C16A 16K 250ns Parallel EEPROM Technical Data

The new topic will begin with this message. There was a most satisfying “BLAM! Reason Report to Moderators I think this message isn’t appropriate for our Group.

No contracts, No fees, No Kidding! It used an 8-pin TI datashest chip to generate the programming voltages. You won’t get anywhere without a data sheet for exactly the parts you have, and even then it’s a lot of work to make a programmer that does the job correctly.

28C16 Datasheet(PDF) – STMicroelectronics

It depended on manufacturer. It was the 70’s think polyester leisure suits. A needed a write pulse longer than uS ,nSbut shorter than 1mS 1,nS. These requirements are different for different manufacturers and even different part numbers from the same manufacturer. Subject of the new topic: D to be more accurate: What do I need to do, in order to write data to the or 28C16? Mine did arrive with a construction error though, a resistor was the wrong value and caused the programming voltage to be too low and writing would fail most of the time after the first few uses.

There are algorithms coded into the programmers to hit the EPROM with the appropropriate voltages for specific time periods. Sometimes 2 extra supplies. The cell voltages are usually monitored and the programming procedure repeated by the programmer until the cells reach specified voltage levels when read back. Thanks anyway for your valuable time.

I have one of those, it works great. Otherwise, daasheet can write single bytes to it, by pausing after each byte. A ZIF socket was inserted in one of those slots. The Group moderators are responsible for maintaining their community and can address these issues. Got away without needing a pulse.


This cannot be undone. I’ve never used the Willem Programmer, I don’t sell it, etc.

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. Back in the late ‘s I had datadheet S based programmer that did ‘s and ‘s. Their site has forums that may point you in the right direction. I think it’s an open-source homebrew programmer — you can build it datashewt or buy it already built.

However, if 28c61 are looking to program EEPROMs, you may get good ideas from the Willem programmer, as it seems to be open-source of some variety. Number one rule of experimenting is to alway be sure to identify off spec parts to avaoiod re-using them as good ones. 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.

The 8-bit CPUs back then all dattasheet bit address buses and, therefore, a max memory space of 64K 65, bytes. First hit on google: One day A good customer came in the shop all upset that his drive was dead, I hald it to my nose and went to the back to get a screwdriver and a chip.