DESCRIPTION
The ST16HF52, a member of the standard ST16 device family, is a serial access microcontroller especially designed for large volume contactless/ contact Smartcard applications.
The ST16HF52 is based on 8 bit CPU core and includes on chip memories: 512 Bytes of RAM, 22 KBytes of USER ROM, SYSTEM ROM, and 2048 Bytes of EEPROM.

■ 8 BIT ARCHITECTURE CPU
■ 22 KBytes of USER ROM, SECTOR COMBINATIVE
■ SYSTEM ROM
■ 512 Bytes of RAM
■ 2048 Bytes of EEPROM, SECTOR COMBINATIVE
   – Highly reliable CMOS EEPROM technology
   – 10 year data retention
   – 300,000 Erase/Write cycle endurance
   – Protected One Time Programmable block (32 or 64 bytes)
   – 1 to 32 bytes block either Erase or Write in single cycle programming
■ POWER SAVING STANDBY MODE
■ VERY HIGH SECURITY FEATURES INCLUDING EEPROM FLASH ERASE
■ ESD PROTECTION GREATER THAN 5000V
■ 2 OPERATING CONFIGURATIONS
   – ISSUER
   – USER

CONTACTLESS SPECIFIC FEATURES
■ COMPATIBLE WITH ISO 14443 TYPE B STANDARD
■ 13.56 MHZ CARRIER FREQUENCY
■ 106 KBIT/S DATA TRANSFER
■ AMPLITUDE MODULATION READER TO CARD
■ LOAD MODULATION CARD TO READER
■ 3V OPERATION
■ HYPERPROXIMITY TM FEATURE

CONTACT SPECIFIC FEATURES
■ EXTENDED VOLTAGE OPERATION, Vcc Range: 2.7V to 5.5V
■ SERIAL ACCESS, ISO 7816-3 COMPATIBLE
■ UP TO 5 MHz INTERNAL OPERATING FREQUENCY
■ CONTACT ASSIGNMENT COMPATIBLE ISO 7816-2