28C16 DATASHEET PDF

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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Back in the late ‘s I had an S based programmer that datwsheet ‘s and ‘s. No contracts, No fees, No Kidding! A RAM device, obviously, can be written to, about the same speed as it can be read.

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(PDF) 28C16 Datasheet download

I got away with just using a 74C keyboard encoder, and feeding an inverted version of the “valid data” 28f16 from that, datqsheet to “not WE” on the Dallas part. Number 2816 rule of experimenting is to alway be sure to identify off spec parts to avaoiod re-using them as good ones. Are you sure you wish to delete this message from the message archives of neonixie-l groups.

Datasyeet does anyone suspect that by NOT giving the a precisely timed pulse, that I may have damaged it? 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.

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. What’s the deal with the ? What do I need to datashheet, in order to write data to the or 28C16? The cell voltages are usually monitored and the programming procedure repeated by the programmer until the cells reach specified voltage levels when read back.

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D to be more accurate: I think it’s an open-source homebrew programmer — you can build it yourself or buy it already built. I’ve never used the Willem Programmer, I don’t sell it, etc. Writing was a bit different. Chuck Richards Chuck, The is an electrically-erasable version of the 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 datadheet of the time after the first few uses.

Back when I just got started in the electronics business, I was working as tech and general slave. First hit on google: Most new ones withwrite cycles, before data transfers get iffy. It was the 70’s think polyester leisure suits.

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

The 8-bit CPUs back then all had bit address buses and, therefore, a max memory space of 64K 65, bytes. Do they require an exact timing pulse to be applied to the “not WE” pin, in order to write to it?

Anyone familiar with these parts? Search Only Within This Topic. Again, read the data sheet carefully and make sure it’s for the exact same device and manufacturer. Their site has forums that may point you in the right direction. Just Beyond the Fringe http: Datashdet 2 extra supplies. Your email is included with the abuse report.

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

What am I missing here? The intent for these devices was to hold configuration info, and other field alterable data. Two E’s instead of one Big difference. Otherwise, you can write single bytes to it, by pausing after each byte.

A few months after I got it back, the same thing happened again. CPU and memory cards where made to accommodate this situation. 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 ZIF socket was inserted in one of those slots. This cannot be undone. One day A good datasheeet came in the shop all upset that his drive was dead, I hald it to my nose and went to the back datasjeet get a screwdriver and a chip.

28C16 EEPROM used in Commodore and Amiga equipment

A needed a write pulse longer than uS ,nSbut shorter than 1mS 1,nS. It was an ‘ad-hoc’ job, using datzsheet assemblies. The new topic will begin with this message. There was a most satisfying “BLAM!

It reads just fine, but it won’t take any new data. Got away without needing a pulse. Reminds me of the Old Apple ][ Disk ][ Drives.

They are not intended to hold actual program code, even though you could do this. At 10mS per byte, it would get quite tiresome. Won’t touch the s I have, though Egg on my face. Subject of the new topic: