AT25DF256-XMHN-T Integrated Circuits (ICs)

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AT25DF256-XMHN-T is a kind of non-volatile memory developed by Microchip Technology, Inc. It is mainly used in the field of industrial control, embedded systems, and Internet of Things.

AT25DF256-XMHN-T is a serial flash memory chip composed of a floating-gate array and a standard CMOS process. It has 256 megabytes of storage capacity, which can be divided into 16,383 sectors with a size of 4 kilobytes each. The chip also contains a 256-bit non-volatile electronic signature, an EEPROM-like virtual register array, 4 dedicated protection bytes and a status register.

AT25DF256-XMHN-T supports a dual-mode serial interface, providing a 3-wire SPI interface and a 4-wire SPI/Q-SPI interface option. The 3-wire SPI interface uses the SCK (serial clock) + DI (data in) + DO (data out) signals. The 4-wire SPI/Q-SPI interface adds the data output enable IO2 (Q-SPI only) signal. All peripherals support SPI BUS speed up to 66 MHz and Q-SPI support up to 80 MHz.

AT25DF256-XMHN-T provides read, write and erase operations at the byte, subsector and sector levels. In addition, a fast Page Read/Page Program feature allows multiple continuous bytes of data to be read/written without requiring individual byte addressing. 8-byte instruction and address registers can store instructions, addresses, and data for subsequent transmission.

The AT25DF256-XMHN-T has a write-protected high-security feature that prevents illegal data changes. In order to perform write/erase programming operations, the WP pin must be programmed using the Security Register. The chip can also be verified with a unique 256-bit identification code.

AT25DF256-XMHN-T offers a wide operating voltage range from 1.7V~3.6V, and has a high write speed of up to 25MB/s. It is also very cost-effective and reliable, and provides high programming/erasing endurance with up to 10,000 program/erase cycles and data retention of 20 years. Thus, AT25DF256-XMHN-T can be safely used in harsh environments and long-term data storage.

In summary, AT25DF256-XMHN-T is a reliable non-volatile memory with a wide range of applications. It is mainly used in industrial control and embedded systems, as well as Internet of Things. It offers high levels of security, reliability, and endurance, making it suitable for long-term data storage and harsh environment applications.

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