This X76F400 device has been acquired by
IC MICROSYSTEMS from Xicor, Inc.
ICmic
IC MICROSYSTEMS
TM
4K
X76F400
Secure SerialFlash
DESCRIPTION
512 x 8 bit
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:
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.
—8-lead, SOIC,TSSOP
BLOCK DIAGRAM
Retry Counter
Data Transfer
Array Access
Enable
SCL
SDA
Interface
Logic
Erase Logic
496 Byte
EEPROM Array
Password Array
and Password
Verification Logic
RST
ISO Reset
Response Register
REV 1.0 7/5/00
www.icmic.com
Characteristics subject to change without notice.
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