BL7448SM Datasheet PDF - Shanghai Belling Co., Ltd.

Description
BL7448SM is an IC Card chip (module) made by 0.35um CMOS EERPOM process. It has 1024 byte EEPROM with logical encryption and function.

FEATUREs
• 1024 x 8 bit EEPROM organization
• Byte-wise addressing Irreversible byte-wise write protection of every Byte
• 1024 x1 bit organization of protection memory
• Serial three-wire link
• End of processing indicated at data output
• Minimum of 100,000 write/erase cycles
• Data retention time :>10 years
• Contacts configuration and serial interface according to ISO 7816 standard (synchronous transmission)
• Data can only be changed after entry of the correct 2-byte Programmable security code