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AT24C256 card

AT24C256 card is the earliest one of Atmel company produces the memory chip, AT24C256IC card with series of IC products are ATMEL24C01 / ATMEL24C02 / ATMEL24C04 / ATMEL24C08 / ATMEL24C16 / ATMEL24C32 / ATMEL24C64 Atmel memory card, is a kind of don't block encryption function of EEPROM, AT24C for serial number, part number for the K bit capacity,They are 1K, 2K, 4K, 8k, 16K, 32K and 64K respectively.Its use method and EPROM are exactly the same, the storage structure is simple, only read and write two kinds of operation functions, mainly used to store some of the confidentiality requirements of data is not high.

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AT24C256 card chip parameters

Packaging into finished standard size: 85.5mm*54mm*0.84mm 24CXX memory card, is a kind of EEPROM card without encryption function.

AT24C for serial number, part number for the K bit capacity, respectively, 1 K, 2 K and 4 K, 8 K, 16 K, 64 K, corresponding to the chip for: 24 c01/24 our fleet / 24 c04/24 c08/24 c16/24 c32/24 popular c64

Its use and EPROM is exactly the same, storage structure is simple, only read and write two kinds of operation functions, communication is very stable

AT24C series operating frequency is lMHz(5V), lMHz(2.7v), 400KHz(1.8v);

The working voltage is 5V l0%, which can be as low as 1.8v according to the requirements;

ICC current read is lmA, write is 3mA:

Write/erase times l00 million times;

Capacity: 256K

Data kept for 100 years;

Working temperature is O - 70 ℃, according to the requirements can exceed the specified operating temperature;

Communication protocol in accordance with ISO/IEC 7816-3 synchronous protocol, two-way serial interface.

Mainly used for storage of some data with low confidentiality requirements, such as data storage, phone CARDS and campus CARDS in various fields. Storage content can be encrypted into ciphertext, and with the effectiveness of the system, can also achieve the confidentiality function, such as now commonly used driving school driving training timing system.