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Help CenterFM 4428 Chip Card - Quality Cards by Roxtron
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Siemens FM 4428 Chip Card / Smart Card / ICC / Contact IC Card by Roxtron
With Intelligent 8-Kbit EEPROM
The chip contains an EEPROM organized 1024 x 8 bit offering the possibility of programmable write-protection for each byte. Reading of the whole memory is always possible. The memory can be written and erased byte by byte. Input data and the contents of the addressed byte are compared so that only bits are written which were not written before. Erasing is only possible byte-wise, even if only one bit is to be erased, but bits may be written individually. Each byte can be write/erase protected individually by setting a protect bit (EEPROM → ROM). The protect bit is only one time programmable and cannot be erased.
SLE 4428 has a PSC verification logic. All the memory, except for the PSC, can always be read. The memory can be written or erased only after PSC verification. The error counter can always be written. After eight successive incorrect entries the error counter will block any subsequent attempt at PSC verification and hence any possibility to write and erase.
- SLE5542 , SLE4442, SLE4428, SLE5528,
- SLE4442-Compatible, SLE5542-Compatible,
- SLE4428-Compatible, SLE5528-Compatible
- AT24C16, AT24C64, AT24C128SC,
- AT24C256, AT24C512, AT24C1024
- AT88SC0204C, AT88SC0404C, AT88SC1616C
24LC02, 24LC16, I2C Bus, I2C 2K, I2C EE2K
Please contact Roxtron for more information about other available chips.
1. How do I know if this product will work with my devices?
Please send the technical specifications of your device to sales at roxtron dot com. Our staff will help you find the compatible products that will work with your devices. Nearly all leading technologies are available from us, and we will be able to send you free samples so that you can test them with your devices before you place an order.
2. Do you provide any samples before I place an order?
Yes, we would be happy to provide you with free samples. All samples will be labeled accurately by Roxtron staff, and you will be able to quote the PN on the label when you place your order.
3. I would like to place an order. What should I do?
Please submit your order to sales at roxtron dot com. You will receive a Pro Forma Invoice from Roxtron Sales Department that will include your order details and our corporate bank account information (for bank wire transfer) or our PayPal business account. Once we receive your payment and your approval of the customization options (if any), we will produce your order in about 7 to 15 days, depending on the quantity and requirements. Our logistics staff will also be able to find the most suitable shipping option according to your preferences.
4. Can you communicate in my language?
All our sales staff are bilingual and multilingual. In addition, for non-native English speakers who apply for sales positions in Roxtron, we require a +8 IELTS English language certificate to ensure that all our customers' requirements are fully understood, and all orders are processed accurately and correctly.
5. Can I purchase from Roxtron as an individual, or as a school / university?
We accept orders from individuals, companies, schools, universities, NGOs and other organizations. Please do contact us today to find out more about Roxtron's sponsorship offers for research and educational projects related to electronic identification.
6. Do you have any references?
We are a qualified supplier to a large number of the Fortune 500, government organizations and NGOs for over a decade. For more information please contact the Roxtron sales team.
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