关键字: ATMEL24C01 ATMEL24C02 ATMEL24C04 ATMEL24C08 ATMEL24C16 ATMEL24C32 ATMEL24C64 SLE4442 SLE4428 Keyword: ATMEL24C01 ATMEL24C02 ATMEL24C04 ATMEL24C08 ATMEL24C16 ATMEL24C32 ATMEL24C64 SLE4442 SLE4428

ATMEL储存卡介绍 ATMEL Card introduced

常见ATMEL储存卡型号为：ATMEL24C01/ATMEL24C02/ATMEL24C04/ATMEL24C08/ATMEL24C16/ATMEL24C32/ATMEL24C64 ATMEL存储卡，是一种不具备加密功能的EEPROM卡，AT24C为系列号，数字部分为K位容量，分别为1K、2K、4K、8k、16K、32K、64K。 Common ATMEL Card Model: ATMEL24C01/ATMEL24C02/ATMEL24C04/ATMEL24C08/ATMEL24C16/ATMEL24C32/ATMEL24C64 ATMEL memory card is a lack of EEPROM encryption card, AT24C for the serial number, part number for the K-capacity, respectively, 1 K , 2K, 4K, 8k, 16K, 32K, 64K. 它的使用方法与EPROM完全相同，存储结构简单，只有读写两种操作功能，主要用于存放一些保密性要求不高的数据。 Its use the same methods and EPROM storage structure is simple, only two features to read and write, mainly for the storage of some of the main requirement of confidentiality of data. AT24C系列的工作频率为lMHz(5V)，lMHz(2.7V)，400KHz(1.8V)；工作电压为5V士l0％，根据要求最低可至1.8V；Icc电流读最大为lmA，写最大为3mA： 写／擦除次数为l00万次；数据保持lO0年；工作温度为O-70℃，根据要求可超过指定工作温度；通讯协议符合ISO／IEC 7816-3同步协议，双向串行接口。 AT24C series for the working frequency of lMHz (5V), lMHz (2.7V), 400KHz (1.8V); working voltage of 5 V disabilities l0%, the minimum required to be 1.8 V; Icc current maximum lmA Reading, writing mA maximum 3 : write / erase frequency of l00 million; data maintained lO0; temperature is O-70 ℃, on request over a specified temperature; communications protocols in accordance with ISO / IEC 7816-3 synchronization protocols, two-way serial interface. AT24C系列型号的后两位数字为该型号的最大K位数(1K=1024)，8位为1字节，最大字节存储容量的算法为K位数×l024÷8。 AT24C series after two models of digital models for the largest median K (1 K = 1024), 8 1 bytes, the biggest byte storage algorithm for K median × l024 ÷ 8. 如：AT24C01A的最大存储容量字节1×1024÷8=128，其字节地址空间为O—127(16进制为0x00—0x7F)。 Such as: AT24C01A byte maximum storage capacity of 1 × 1024 ÷ 8 = 128, byte address space for the O-127 (16 hexadecimal 0 x00-0x7F).

SLE储存卡简介 About SLE Card

常见SEL储存卡型号为：SEL4428/SEL4442 容量分别为：1K/256B,所有数据除密码外, 在任意情况下均可被读出, 密码在核对正确后可以被读出。 Common SEL Card Model: SEL4428/SEL4442 capacity are as follows: 1 K/256B, all data in addition to passwords, in any circumstances can be read out after the correct password verification can be read out. 所有数据都可以按字节进行写保护，写保护后数据固化，任何情况下不可更改。 All data can be protected by byte write, write protection of data after curing, not change under any circumstances. 密码出错计数器密码核对出错一次, 便减1。 Counter wrong password error checking a password, then minus 1. 若计数器值为0,则整张卡的数据被锁死, 只可读出, 不可写入或更改且无法继续核对密码; 若不为0, 则只需一次核对正确, 计数器将恢复为初始值。 If the counter value is 0, then the whole card data to be locked, the only readable, not write or could not continue to check and change your password; not to 0, then just one check correctly, will revert to the initial counter value. SEL4428密码出错计数器初始值为8，SEL4442为3。 SEL4428 password wrong counter initial value of 8, SEL4442 3. 温度范围：-35℃-80℃，至少100,000次擦写，至少10年数据保存期。 Temperature Range: -35 ℃ -80 ℃, at least 100,000, erase, at least 10 data retention period. SLE4428卡无需密码便可读出整张卡的数据, 因此设计时要注意内容加密， 以防破坏者辩识数据格式。 SLE4428 cards can be read without password whole card data, therefore we should pay attention to the design of the content encryption to prevent saboteurs identification data format. 整张卡是不分区的, 密码一经核对正确便可向任一地址写入或修改数据, 因此设计时要注意适当固化数据和将数据内容加密, 以防无意破坏数据或非法更改数据。 Card is not the whole district, a password to be able to verify the correct address into a data or modify, so we should pay attention to the design of appropriate data and curing will be the content of the data encryption to prevent illegal has no intention to destroy data or data changes. 密码核对正确后, 可被读出。 After checking the correct password can be read out. 因此设计时程序要能防止破坏者采用非法中断程序运行, 直接去读取密码的方法来窃取密码。 So the design process must be able to prevent the illegal use of saboteurs interrupt procedures and direct access to the password method to steal passwords.

专业制卡 Professional card system
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CARD DESIGN CARD DESIGN
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