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YWW7640 데이터시트(PDF) 1 Page - IC MICROSYSTEMS |
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YWW7640 데이터시트(HTML) 1 Page - IC MICROSYSTEMS |
1 / 14 page REV 1.0 7/5/00 Characteristics subject to change without notice. 1 of 14 www.icmic.com BLOCK DIAGRAM 496 Byte EEPROM Array Logic SCL SDA RST Interface Data Transfer Array Access Enable ISO Reset Response Register Password Array and Password Verification Logic Retry Counter Erase Logic 4K X76F400 512 x 8 bit Secure SerialFlash FEATURES •64-bit password security •One array (496 bytes) two passwords (16 bytes) —Read password —Write password •Programmable passwords •Retry counter register —Allows 8 tries before clearing of the array •32-bit response to reset (RST input) •8 byte sector write mode •1MHz clock rate •2-wire serial interface •Low power CMOS —2.5 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, SOIC,TSSOP DESCRIPTION The X76F400 is a password access security supervisor, containing one 3968-bit Secure Serial Flash array. Access to the memory array can be controlled by two 64-bit passwords. These passwords protect read and write operations of the memory array. The X76F400 features a serial interface and software protocol allowing operation on a popular 2-wire bus. The bus signals are a clock input (SCL) and a bi-directional data input and output (SDA). The X76F400 also features a synchronous response to reset, providing an automatic output of a hard-wired 32-bit data stream, thereby meeting the industry standard for memory cards. The X76F400 utilizes Xicor’s proprietary Direct Write ™ cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years. This X76F400 device has been acquired by IC MICROSYSTEMS from Xicor, Inc. ICmic IC MICROSYSTEMS TM |
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