AT28CPC Microchip Technology / Atmel EEPROM 64K 5V w/RDYBSY – NS COM TEMP datasheet, inventory, & pricing. Microchip AT28C64 EEPROM are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Microchip AT28C64 EEPROM. AT28CPC 64k (8k X 8) Parallel EePROMs Features. Fast Read Access Time ns Fast Byte Details, datasheet, quote on part number: AT28C 15PC.
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I created a circuit in which all the address inputs of an AT28C are connected to outputs of shift registers 74HC That’s the darasheet part.
Well no connect could mean do not connect or does not connect. In the future I will do many of these circuits, however I haven’t yet decided if I need the full 32KB datashete memory. With that resistor in series with pin 1, swapping in an 8K ROM instead of the 32K one should work just fine. Sign up using Facebook.
AT28CSC IC EEPROM 64K NS SO Atmel datasheet pdf data sheet FREE from
After looking at the datasheets, I notice the difference in pin-out between the two chips is ar28c64 on the AT28C64, A13 and A14 are replaced with NC no connects. Sign up or log in Zt28c64 up using Google. There are “No Connect” NC pins, those are not connected in the chip so you can hook them up to a voltage.
AT28C64 Datasheet PDF
This does exactly what you say, i. At28x64 general, except in cases where the manufacture is specifically supporting compatible footprints between different parts, you should not connect to the NC pins.
Sometimes no connect pins are special function pins and they don’t want you to connect to them. Home Questions Tags Users Unanswered. They can usually answer these types of questions.
Sign up using Email and Password. The datasheet of the AT28C64 makes it pretty clear: Email Required, but never shown.
For memory chips in particular, pins that get used as address pins in larger parts and are NC pins in smaller parts can usually be connected. Is it OK anyway to connect such pins to outputs of shift registers and be able to make a AT28C64 like a drop-in replacement for AT28C or are the NC pins internally connected to something? Other times there may not even be a wire bond between the silicon and the pin, so you are free to do whatever you want with it. Post as a guest Name.