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參數(shù)資料
| 型號： | SLE4442M2.2 |
| 廠商： | SIEMENS AG |
| 英文描述： | ICs for Chip Cards Intelligent 256-Byte EEPROM |
| 中文描述： | 集成電路芯片卡智能256字節(jié)EEPROM |
| 文件頁數(shù)： | 11/35頁 |
| 文件大?。?/td> | 1011K |
| 代理商： | SLE4442M2.2 |
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SLE 4432
SLE 4442
Semiconductor Group
9
SLE 4442
Additionally to the above functions the SLE 4442 provides a security code logic which controls the
write/erase access to the memory. For this purpose the SLE 4442 contains a 4-byte security
memory with an
E
rror
C
ounter EC (bit 0 to bit 2) and 3 bytes reference data. These 3 bytes as a
whole are called
P
rogrammable
S
ecurity
C
ode (PSC). After power on the whole memory, except for
the reference data, can only be read. Only after a successful comparison of verification data with the
internal reference data the memory has the identical access functionality of the SLE 4432 until the
power is switched off. After three successive unsuccessful comparisons the
E
rror
C
ounter blocks
any subsequent attempt, and hence any possibility to write and erase.
2.2
Transmission Protocol
The transmission protocol is a two wire link protocol between the interface device IFD and the
integrated circuit IC. It is identical to the protocol type “S = A”. All data changes on I/O are initiated
by the falling edge on CLK.
The transmission protocol consists of the 4 modes:
Note:
The I/O pin is open drain and therefore requires an external pull up resistor to achieve a high
level.
– Reset and Answer-to-Reset
– Command Mode
– Outgoing Data Mode
– Processing Mode
Operational modes
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SLE44R35S | Interlligent 1K-byte EEPROM with Interface for Contactless Transistors,Security Logic and Anticollision(帶無接口晶體管，安全邏輯和防碰撞智能1K位EEPROM) |
| SLE4520 | Pulse-Width Modulator |
| SLE5536S | Intelligent 221_bit EEPROM counter with security logic and high security authentication(智能221位EEPROM帶安全邏輯和安全鑒證) |
| SLE5536SE | Intelligent 221_bit EEPROM Counter with Security Logic and High Security Authentication(智能221位EEPROM帶安全邏輯和安全鑒證) |
| SLX24C04P | 4 Kbit 512 x 8 bit Serial CMOS EEPROMs, I2C Synchronous 2-Wire Bus, Page Protection Mode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SLE4442M3 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Chip Cards / Intelligent 256/64/128-Byte EEPROM |
| SLE4466 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Securiy & Chip Card ICs |
| SLE44C10S | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Security & Chip Card ICs |
| SLE44C10S-C | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Security & Chip Card ICs |
| SLE44C10S-M4 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Security & Chip Card ICs |
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