AT28C040-25LC

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The AT28C040-25LC is a member of the AT28C00 family of electrically erasable programmable read-only memories (EEPROMS). It is a nonvolatile memory device that allows users to electrically store and erase data with approximately 100,000 erase/write cycles per sector. It is also very useful in asynchronous communications and requires no additional components when used in most applications.

The AT28C040-25LC is a low-cost, single-chip CMOS memory device that is ideal for use in a wide variety of industrial and consumer applications. It is the perfect choice for data storage and processing applications, such as embedded control, communications and computer peripherals. In addition, it can be used as a system memory and as a code storage device in microcontroller based systems.

The AT28C040-25LC offers four memory options: 256Kbits, 1Mbit, 2Mbit, and 4Mbit. It also offers three packaging options, a 28-pin PLCC package, a 28-pin DIP package, and a 38-pin PLCC package. The device is available in two access speed options, 25 nanoseconds (ns) and 45 ns.

The AT28C040-25LC features an asynchronous design and is fully compatible with industry standards, including the Joint Test Action Group (JTAG) and I2C/SPI protocols. This allows the device to be easily integrated into existing designs. The device also features a write protection feature to prevent inadvertent access or erasure of data. The AT28C040-25LC also includes a wide temperature range operating voltage of 2.7-5.5 Volts.

When it comes to the working principle of the AT28C040-25LC, the chip is based on a technology called nonvolatile memory. This means that the data stored in the device is not lost when the power is turned off or the device is taken away from its power source. The device can be erased and reprogrammed many times during its lifecycle. This process involves the use of a relatively low voltage, which is applied to the device to erase and reprogram it.

The AT28C040-25LC also offers a powerful error correction capability that helps it to remain more reliable over time. It provides a comprehensive set of diagnostic features, including built-in error checking and correction, CRC and parity bits, and an on-chip programmable memory independent of the main memory. This helps ensure that users can trust the integrity of their data at all times.

In addition to the robust memory architecture, the AT28C040-25LC also offers on-chip security features that help to protect data from unauthorized access, accidental tampering, and malicious tampering. These features include encryption, ability to lock/unlock sectors of memory, and password protection. These features also help to make the AT28C040-25LC a secure and reliable choice for data storage, embedded control, or communications.

Overall, the AT28C040-25LC is a convenient, versatile, and cost-effective memory device suitable for a wide variety of industrial and consumer applications. Its nonvolatile memory technology and enhanced error correction schemes make it a reliable and secure memory solution for embedded devices, computer peripherals, and communication systems. And with its multiple access speed and packaging options, the AT28C040-25LC can easily meet the needs of any application.

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