DESCRIPTION
The X76F641 is a Password Access Security Supervisor, containing one 65536-bit Secure Serial Flash array and one 256-bit Secure Serial Flash array. Access to each memory array is controlled by five 64-bit passwords each. These passwords protect read and write operations of the memory array. A separate RESET password is used to reset the passwords and clear the memory arrays in the event the read and write passwords are lost.

FEATURES
• 64-bit Password Security
     —Five 64-bit Passwords for Read, Program and Reset
• 8192 Byte+32 Byte Password Protected Arrays
     —Seperate Read Passwords
     —Seperate Write Passwords
     —Reset Password
• Programmable Passwords
• Retry Counter Register
     —Allows 8 tries before clearing of both arrays
     —Password Protected Reset
• 32-bit Response to Reset (RST Input)
• 32 byte Sector Program
• 400kHz Clock Rate
• 2 wire Serial Interface
• Low Power CMOS
     —2.0 to 5.5V operation
     —Standby current Less than 1µA
     —Active current less than 3 mA
• High Reliability Endurance:
     —100,000 Write Cycles
• Data Retention: 100 years
• Available in:
    —8 lead EIAJ SOIC
    —SmartCard Module