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| Product Name: |
4442Contact Memory Chip
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| Supply Ability: |
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| Specifications |
4442chip |
| Price Term: |
FOB |
| Port of loading: |
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| Minimum Order |
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| Unit Price: |
FOB SHA |
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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 Error Counter EC (bit 0 to bit 2) and 3 bytes reference data. These 3 bytes as a whole are called Programmable Security Code (PSC). After power on the whole memory, except for the reference data, can only be read. Only after a successful co***rison 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 co***risons the Error Counter blocks any subsequent attempt and hence any possibility to write and erase.
Technical Features:
256 * 8-bit EEPROM organization
Byte-wise addressing
Irreversible byte-wise write protection of lowest
32 addresses (Byte 0 ... 31) 32*1-bit organization of protection memory
Two-wire link protocol
End of processing indicated at data output
Answer-to-Reset acc. to ISO standard 7816-3
Programming time 2.5 ms per byte for both erasing and writing
Minimum of 104 write/erase cycles
Data retention for minimum of ten years
Contact configuration and serial interface in accordance with ISO standard 7816 (synchronous transmission)
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| Company: |
Shanghai RealSmart Technologies Co., Ltd.
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| Contact: |
Ms. Fanny zheng |
| Address: |
1401,Tower D, No.80, Caobao Road, Xuhui District, Shanghai 200235, China |
| Postcode: |
200235 |
| Tel: |
86-021-64326941 |
| Fax: |
86-021-64326942 |
| E-mail: |
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