DESCRIPTION
The ST16R820, a member of the standard ST16 device family, is a serial access microcontroller especially designed for large volume contactless/contact Smartcard applications.

■ 8 BIT ARCHITECTURE CPU
■ 8 KBytes of USER ROM, SECTOR COMBINATIVE
■ 4.5 KBytes of SYSTEM ROM
■ 192 Bytes of RAM
■ 544 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
■ 13.56 MHZ OPERATION
■ 106 KBIT/S DATA TRANSFER
■ AMPLITUDE MODULATION READER TO CARD
■ LOAD MODULATION CARD TO READER
■ 3V OPERATION

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