Common used logic encryption IC for compatible toner chips-AT88SC

AT88SC is a series of smart encryption chips launched by ATMEL (now a subsidiary of Microchip Technology) in 2001, primarily used in the fields of secure data storage and encrypted communication, covering applications in smart cards, industrial control devices, and consumer electronics. The chip series offers capacities ranging from 1K to 256K bits and supports the ISO7816-3 protocol as well as multiple interface protocols such as I2C and SPI. Its operating voltage ranges from 2.7V to 5.5V, and it is compatible with PC/SC protocol readers.

The chips provide three operating modes: standard, authentication, and encryption. In standard mode, they function as EEPROM storage units; in authentication mode, they verify device identity and generate temporary session keys through dynamic bilateral encryption (based on the F2 algorithm); in encryption mode, bus data encryption is enabled. Four built-in user data partitions allow independent configuration of read/write permissions and authentication methods via access registers, supporting line encryption, anti-plug removal protection, and data integrity verification. The product series employs a fuse-locking mechanism for configuration parameters, supports multi-platform development toolchains, and meets the security requirements of low-resource embedded systems.

Most used on Samsung old generation toner chips,just like Samsung MLT-D2850,1630....