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.
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