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X76F041PE-3 Datasheet(PDF) 1 Page - Xicor Inc. |
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X76F041PE-3 Datasheet(HTML) 1 Page - Xicor Inc. |
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1 / 21 page  Password Access Security Supervisor ©Xicor, Inc. 1994, 1995, 1996 Patents Pending 7002-2.2 4/30/97 T3/C0/D0 SH 1 Characteristics subject to change without notice 4K X76F041 4 x 128 x 8 Bit PASSTM SecureFlash FEATURES • 64-Bit Password Security • Three Password Modes —Secure Read Access —Secure Write Access —Secure Configuration Access • Programmable Configuration —Read, Write and Configuration Access Passwords —Multiple Array Access/Functionality —Retry Register/Counter • 8 Byte Sector Write • (4) 1K Memory Arrays • ISO Response to Reset • Low Power CMOS —50 µA Standby Current —3mA Active Current • 1.8V to 3.6V or 5V “Univolt” Read and Program Power Supply Versions • High Reliability —Endurance: 100,000 Cycles —Data Retention: 100 Years —ESD Protection: 2000V on All Pins DESCRIPTION The X76F041 is a password access security supervisor device, containing four 128 x 8 bit SecureFlash arrays. Access can be controlled by three 64-bit programmable passwords, one for read operations, one for write opera- tions and one for device configuration. The X76F041 features a serial interface and software protocol allowing operation on a simple two wire bus. The bus signals are a clock input (SCL) and a bidirectional data input and output (SDA). Access to the device is con- trolled through a chip select input (CS), allowing any number of devices to share the same bus. The X76F041 also features a synchronous response to reset; providing an automatic output of a pre-configured 32-bit data stream conforming to the ISO standard for memory cards. The X76F041 utilizes Xicor’s proprietary Direct WriteTM cell, providing a minimum endurance of 100,000 cycles per sector and a minimum data retention of 100 years. FUNCTIONAL DIAGRAM INTERFACE LOGIC CHIP ENABLE (4) 16 x 64 SECUREFLASH ARRAYS 180–1FF 100–17F 080–0FF 000–07F SDA SCL RST CS 7002 ILL F01 DATA TRANSFER ARRAY ACCESS ENABLE PASSWORD ARRAY AND PASSWORD VERIFICATION LOGIC ISO RESET RESPONSE DATA REGISTER CONFIGURATION REGISTER RETRY COUNTER APPLICATION NOTE A V A I L A B L E AN83 • Development Tools XK76C |
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