The Microchip Technology Inc. 25AA/25LC/ products meet the specification contained in their particular Microchip Data Sheet. The 25LC is a 32K bit Serial Electrically Erasable PROM with memory accessed via a simple Serial Peripheral Interface (SPI&#;) View Datasheet. 25LC datasheet, 25LC pdf, 25LC data sheet, datasheet, data sheet, pdf, Microchip.

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Generally speaking there are three modes of transmission numbered 0 – 3. A microcontroller normally has 40 or more pins since the input and output operations occur directly from the chip.

It can only be written bytes at a time, but it can be read bytes at a time.


These memory chips store the bits of data by blowing small fuses inside the memory device. Mainly two types of serial communication protocols are available: Since the individual listing of every part number from every manufacturer creates a prohibitively large list, we list all supported manufacturers in a separate table with core part numbers arranged by technology family and pin count where applicable.

These datashete do not have a battery and maintain their information as an array of magnetic charges. Arduinoos Get the most out of the least. Pre-processor directives are processed before the actual compilation begins. Once they are programmed they cannot be changed.


Due to the number of device manufacturers, the catagories below are organized by technology family and device pin count.

Instead, we will look after chips which data is addressed in serial mode. The difficult part about SPI is that the standard is loose and each device implements it a little differently. Status registers change their state based on various microcontroller conditions.

This approach allows you to more easily locate a device number, as many users do not know the manufacturer of the device in which they have interest.

Additional information about this technology family. Bug of the day: These parts are always in plastic cases because the erasing of the part dataxheet done electrically without the need to expose the internal chip to ultraviolet light. Each chip has its own properties in terms of: Next is a short recap of the chip properties Reference Max.

Insert the AT25HP chip into the breadboard.

B versions have something to do with the way data are arranged internally. It’s memory is organized as pages of bytes each. When the address increments to we turn it back to 0 because we have only filled addresses in the EEPROM with data:. Datashwet core number is normally easy to determine and serves as the industry standard description for nearly all common programmable devices with multiple manufacturers.

25LC32 Datasheet catalog

Microcontrollers are usually found in products which perform a single function such as microwave ovens, computer printers, automatic sprinkler controllers, etc. Instructions are sent as datahseet bit operational codes opcodes and are shifted in on the rising edge of the data clock. Write and read functions are available with and without address setting. As we deal with rather limited micro-controllers, we will skip the families of EEPROM chips which data are addressed in parallel mode.

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Datasheet l | ChipFind Datasheet Archive |

It can also be used for communication between two microcontrollers. Each time through the loop we increment the eeprom address to read.

Control registers code control settings for various microcontroller functionalities. They differ from their supply voltages: The images on the bottom right are close-up views of the first three eprom packages.

In the control register each bit sets a different functionality. The CORE part number is easily identified and has been hi-lited. Each has the manufacturers full part number printed on the device.

Within the 25LC family, some references are getting obsolete and Microchip suggests to use the A versions instead. We send the 16 bit address to begin writing at in two bytes, Most Significant Datashset first.