General Description
SLE 22C05S is a member of the Infineon Technologies low cost security controller family in 0.6 µm CMOS technology. The CPU provides the high efficiency of the SAB 8051 instruction set extended by additional powerful instructions together with enhanced performance, memory sizes and security features.
The controller IC offers 7.5 Kbytes of User-ROM, 128 bytes internal RAM and 512 Bytes EEPROM.
The CRC module allows the easy generation of checksums according to ISO 3309 (16-BitCRC). To minimize the overall power consumption, the chip card controller IC offers a sleep mode.

Features
• 16-bit microcomputer in 0.6 µm CMOS technology
• Instruction set opcode compatible with standard SAB 8051 processor
• Enhanced 16-bit arithmetic
• Additional powerful instructions optimized for chip card applications
• Dedicated, non-standard architecture with execution time six times faster than standard SAB 8051 processor
• 7.5-Kbytes User ROM for application programs
• 512-bytes reserved ROM for Resource Management System (RMS) with intelligent write/erase routines
• 512-Bytes EEPROM as program/data memory
• 128 bytes RAM
• CRC Module
• Power saving sleep mode
• Clock freq. = int. freq.: 1 to 7.5 MHz
• Contact configuration and serial interface in accordance with ISO 7816
• Supply voltage range: 2.7 V to 5.5 V
• Current consumption < 8 mA at 5 MHz and 5.5 V
• Temperature range: -25 to +70°C
• ESD protection larger than 4 kV