25LC640-E/SN

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	EEPROM
Technology:	EEPROM
Memory Size:	64Kb (8K x 8)
Clock Frequency:	3MHz
Write Cycle Time - Word, Page:	5ms
Memory Interface:	SPI
Voltage - Supply:	2.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	25LC640

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25LC640-E/SN are 8-kilobit Serial-Interface Electrically Erasable Programmable Read-Only Memory (EEPROM) devices that are internally organized as 64-kilobytes. 25LC640-E/SNgather an array of 8Kbytes and have an additional 64 bytes of SRAM. They are organized as 64 pages of 256 bytes each. The 25LC640-E/SNprovide serial communication through an I2C/Microwire Bus compatible serial interface.25LC640-E/SN is a good option for storing persistent data in ultra-low power applications because it offers the added advantage of supporting fast read or write operations without the need for an external power source. The 25LC640-E/SN supports a wide temperature range (from -40℃ to +125℃), so it can be used in numerous environmental conditions, from military to aerospace applications. Additionally, the device supports advanced write protection for both the data and the status registers. An application field for the 25LC640-E/SN includes data logging, and control of machines/robots. Data logging from electrical, electronic and environmental instruments is one use for this device as it enables data to be recorded on a continuous basis. Additionally, 25LC640-E/SN can be used in controlling machines/robots, because they offer fast read/write operations and nonvolatile memory locations that enable data to be stored between power cycles.The working principle of 25LC640-E/SN involves reading, writing and erase operations. A user can access data stored in the memory by issuing a sequence of commands, including: read enable, write enable, read, write and erase. Read enable and write enable are used to enable data and program memory. Read command allows users to read data from the memory by sending a specific address. Write command stores data in the memory and erase command erases memory contents, such as commands, instructions and data.25LC640-E/SN also comes with advanced write protection for both the data and status registers. This feature prevents data from being partially written by checking whether the device is enabled for a write operation or falsely forced into a write operation when power is applied. It also prevents accidental loss of data due to erroneous control instructions or sudden blackouts, allowing users to trust in the reliability and durability of the device.Overall, 25LC640-E/SN is an ideal solution for low-power, small form factor memory applications. It offers the advantages of supporting fast read or write operations without the need for an external power source, a wide temperature range and advanced write protection. These features make it suitable for a variety of applications, such as data logging and controlling machines/robots. With its serial interface and nonvolatile memory, 25LC640-E/SN is an excellent choice for storing persistent data.

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