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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Dattasheet you write to the same address at one write per 10mS, you’d kill that byte in about 20 minutes. I’ve never used the Willem Programmer, I don’t sell it, etc. These requirements are different for different manufacturers and even different part numbers from the same manufacturer. Number one rule of experimenting is to alway be sure to identify off spec parts datasbeet avaoiod re-using them as good ones.
The cell voltages are usually monitored and the programming procedure repeated by the programmer until the cells reach specified voltage levels when read back. The new topic will begin with this message. A needed a write pulse longer than uS ,nSbut shorter than 1mS 1,nS.
They are not intended to hold actual 288c16 code, even though you could do this. Again, read the data sheet carefully and make sure it’s for the exact same device and manufacturer. It reads just fine, but it won’t take any new data. I got away with just using a 74C keyboard encoder, and feeding an datashret version of the “valid data” output from that, directly to “not WE” on the Dallas part. The intent for these devices was to hold configuration info, and other field alterable data.
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. This cannot be undone. Back in the 2c816 ‘s I had an S based programmer that did ‘s and ‘s.
28c166 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. Otherwise, you can write single bytes to it, by pausing after each byte.
28C16 (STMicroelectronics) – 16k 2k X 8 Parallel Eeprom With Software Data Protection
To go even more off-topic Most new ones withwrite cycles, before data transfers get iffy. 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.
First hit on google: A Datashset device, obviously, can be written to, about the same speed as it can be read. Sometimes 2 extra supplies. No contracts, No fees, No Kidding! 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. Got away without needing a pulse. Your 28v16 is included with the abuse report.
28C16A-15 – 28C16A 16K 250ns Parallel EEPROM Technical Data
Their site has forums that may point you in the right direction. So, I decided to do a little experiment: Anyone familiar with these parts?
What am I missing here?
It was the 70’s think polyester leisure suits. 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. It used an 8-pin TI switching chip to generate the programming voltages.
Just Beyond the Fringe http: CPU and memory cards where made to accommodate this situation. 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.
Subject of the new topic: It was an ‘ad-hoc’ job, using pre-existing assemblies. Are you sure you wish to delete this message from the message archives of neonixie-l groups. Writing was a bit different. Hello, Forgive this slightly off-topic question: 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.
Do they require an exact timing pulse to be applied to the “not WE” pin, in order to write to it?