APPLICATION NOTE A V A I L A B L E
AN83 • Development Tools XK76C
Password Access Security Supervisor 4K
X76F041
PASSTM SecureFlash
DESCRIPTION
4 x 128 x 8 Bit
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 • .
PASS TM SecureFlash
APPLICATION NOTE A V A I L A B L E
AN83 • Development Tools XK76C
Password Access Security Supervisor 4K
X76F041
PASSTM SecureFlash
DESCRIPTION
4 x 128 x 8 Bit
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 —50µ A 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
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 operations 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 controlled 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.