HARDWARE DESCRIPTION
The ST19KF16, a member of the ST19 device family, is a serial access microcontroller especially designed for very large volume and cost competitive secure portable objects, where high performance Public Key Algorithms will be implemented, to cut down initialization and communication costs and to increase security.

■ 8 BIT ARCHITECTURE CPU
■ 32 KBytes of USER ROM WITH PARTITIONING
■ SYSTEM ROM FOR LIBRARIES
■ 1984 Bytes of RAM WITH PARTITIONING
■ 16 KBytes of EEPROM WITH PARTITIONING
   – Highly reliable CMOS EEPROM technology
   – 10 year data retention
   – 100,000 Erase/Write cycle endurance
   – Separate Write and Erase cycles for fast “1” programming
   – 1 to 64 bytes Erase or Program in 1 ms
■ 1088 BITS MODULAR ARITHMETIC PROCESSOR
   – Fast modular multiplication and squaring using Montgomery method
   – Software Crypto Libraries in separate ROM area for efficient algorithm coding using a set of advanced functions
   – Software selectable operand length up to 2176 bits
■ SECURITY FIREWALLS FOR MAP AND MEMORIES
■ VERY HIGH SECURITY FEATURES INCLUDING EEPROM FLASH PROGRAM AND RAM FLASH CLEAR
■ 8 BIT TIMER
■ SERIAL ACCESS, ISO 7816-3 COMPATIBLE
■ 3V ± 10% or 5V ± 10% SUPPLY VOLTAGE
■ POWER SAVING STANDBY MODE
■ UP TO 10 MHz INTERNAL OPERATING FREQUENCY
■ CONTACT ASSIGNMENT COMPATIBLE ISO 7816-2
■ ESD PROTECTION GREATER THAN 5000V
■ FAST CRYPTOGRAPHIC FUNCTIONS PROCESSING (5V ± 10%, 5MHz)