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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The 8-bit CPUs back then all had bit address buses and, therefore, a max memory space of 64K 65, bytes. There was a most satisfying “BLAM! Sometimes 2 datsaheet supplies.

28C16 Datasheet PDF

dwtasheet That’s why several types of memory had similar pinouts, though hardwire jumpers also had to be set, due to the differences. Writing was a bit different. Subject of the new topic: The new topic will begin with this message. The Group moderators are responsible for maintaining their community and can address these issues.

Chuck Richards Chuck, The is an electrically-erasable version of the 28c166 Search Only Within This Topic. Most new ones withwrite cycles, before data transfers get iffy. I have one of those, it works great. Thanks anyway for your valuable time. It reads just fine, but it won’t take any new data.

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28C16 EEPROM used in Commodore and Amiga equipment

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. It depended on manufacturer.

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 dtasheet to the programmer. Most sane people don’t spend their time building clocks with antiquated technology! I think it’s an open-source homebrew programmer — you can build it yourself or buy it already built.

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

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 datasheft after the first few uses. Back when I just got started in the electronics business, I was working as tech and general slave.

Got away without needing a pulse. And does anyone suspect that by NOT giving the a precisely timed pulse, that I may have damaged it? If the user put the cable on wrong, the 74LS would turn into a 74LS mount st helens. Hello, Forgive this slightly off-topic question: If you write to the same address at one write per 10mS, you’d kill that byte in about 20 minutes. CPU and memory cards where made to accommodate this situation. Number one rule of experimenting is to alway be sure to identify off spec parts to avaoiod re-using them as good ones.

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

The intent for these devices was to hold configuration info, and other field alterable data. Two E’s instead of one Big difference. Some as low a 10, No contracts, No fees, No Kidding! It was an ‘ad-hoc’ job, using pre-existing assemblies.

What do I need to do, in order to write data to the or 28C16? There are algorithms coded into the programmers to hit the EPROM with the appropropriate voltages for specific time periods. Been there and successfully done both. Both of them require interesting programming voltages and very fussy timing sequences to work. Are you sure you wish to delete this message from the message archives of neonixie-l groups. Otherwise, you can write single bytes to it, by pausing after each byte.

A datasheef months after I got it back, the same thing happened datasheft. Their site has forums that may point you in the right direction. At 10mS per byte, it would get quite tiresome.