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X76F041AE-3 Datasheet

  • X76F041AE-3

  • PASS TM SecureFlash

  • 21頁(yè)

  • XICOR   XICOR

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A
PPLICATION
N
OTE
A V A I L A B L E
AN83 鈥?Development Tools XK76C
Password Access Security Supervisor
4K
X76F041
PASS
TM
SecureFlash
DESCRIPTION
4 x 128 x 8 Bit
FEATURES
鈥?64-Bit Password Security
鈥?Three Password Modes
鈥擲ecure Read Access
鈥擲ecure Write Access
鈥擲ecure Con鏗乬uration Access
鈥?Programmable Con鏗乬uration
鈥擱ead, Write and Con鏗乬uration Access
Passwords
鈥擬ultiple Array Access/Functionality
鈥擱etry Register/Counter
鈥?8 Byte Sector Write
鈥?(4) 1K Memory Arrays
鈥?ISO Response to Reset
鈥?Low Power CMOS
鈥?0
碌
A Standby Current
鈥?mA Active Current
鈥?1.8V to 3.6V or 5V 鈥淯nivolt鈥?Read and Program
Power Supply Versions
鈥?High Reliability
鈥擡ndurance: 100,000 Cycles
鈥擠ata Retention: 100 Years
鈥擡SD 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 opera-
tions and one for device con鏗乬uration.
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-con鏗乬ured
32-bit data stream conforming to the ISO standard for
memory cards.
The X76F041 utilizes Xicor鈥檚 proprietary Direct Write
TM
cell, providing a minimum endurance of 100,000 cycles
per sector and a minimum data retention of 100 years.
FUNCTIONAL DIAGRAM
CHIP
ENABLE
DATA
TRANSFER
RETRY
COUNTER
SCL
SDA
INTERFACE
LOGIC
ARRAY ACCESS
ENABLE
080鈥?FF
CS
000鈥?7F
PASSWORD ARRAY AND
PASSWORD VERIFICATION
LOGIC
100鈥?7F
RST
ISO RESET RESPONSE
DATA REGISTER
180鈥?FF
CONFIGURATION
REGISTER
(4) 16 x 64
SECUREFLASH
ARRAYS
7002 ILL F01
漏Xicor, Inc. 1994, 1995, 1996 Patents Pending
7002-2.2 4/30/97 T3/C0/D0 SH
1
Characteristics subject to change without notice

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