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X76F641AE-2.0 Datasheet

  • X76F641AE-2.0

  • Secure SerialFlash

  • 17頁

  • XICOR   XICOR

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ISO 7816 Compatible
64K
X76F641
Secure SerialFlash
DESCRIPTION
8Kx8+32x8
FEATURES
鈥?64-bit Password Security
鈥擣ive 64-bit Passwords for Read, Program
and Reset
鈥?8192 Byte+32 Byte Password Protected Arrays
鈥擲eperate Read Passwords
鈥擲eperate Write Passwords
鈥擱eset Password
鈥?Programmable Passwords
鈥?Retry Counter Register
鈥擜llows 8 tries before clearing of both arrays
鈥擯assword Protected Reset
鈥?32-bit Response to Reset (RST Input)
鈥?32 byte Sector Program
鈥?400kHz Clock Rate
鈥?2 wire Serial Interface
鈥?Low Power CMOS
鈥?.0 to 5.5V operation
鈥擲tandby current Less than 1碌A
鈥擜ctive current less than 3 mA
鈥?High Reliability Endurance:
鈥?00,000 Write Cycles
鈥?Data Retention: 100 years
鈥?Available in:
鈥? lead EIAJ SOIC
鈥擲martCard Module
The X76F641 is a Password Access Security Supervisor,
containing one 65536-bit Secure SerialFlash array and
one 256-bit Secure SerialFlash array. Access to each
memory array is controlled by 鏗乿e 64-bit passwords
each. These passwords protect read and write opera-
tions 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.
The X76F641 features a serial interface and software
protocol allowing operation on a popular two wire bus.
The bus signals are a clock Input (SCL) and a bidirec-
tional data input and output (SDA).
The X76F641 also features a synchronous response to
reset providing an automatic output of a hard-wired 32-bit
data stream conforming to the industry standard for
memory cards.
The X76F641 utilizes Xicor鈥檚 proprietary Direct Write
TM
cell, providing a minimum endurance of 100,000 cycles
and a minimum data retention of 100 years.
Functional Diagram
SCL
SDA
INTERFACE
LOGIC
DATA TRANSFER
ARRAY ACCESS
ENABLE
8K BYTE
SerialFlash ARRAY
ARRAY 0
(PASSWORD PROTECTED)
PASSWORD ARRAY
AND PASSWORD
VERIFICATION LOGIC
RST
RESET
RESPONSE REGISTER
32 BYTE
SerialFlash ARRAY
ARRAY 1
(PASSWORD PROTECTED)
RETRY COUNTER
7025 FM 01
漏
Xicor, Inc. 1994, 1995, 1996 Patents Pending
9900-5004.5 3/9/99 EP
1
Characteristics subject to change without notice

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