TM
This X76F101 device has been acquired by
IC MICROSYSTEMS from Xicor, Inc.
ICmic
128 x 8 bit
IC MICROSYSTEMS
1K
X76F101
Secure SerialFlash
FEATURES
DESCRIPTION
•64-bit Password Security
•One Array (112 Bytes) Two Passwords
The X76F101 is a Password Access Security Supervisor,
containing one 896-bit Secure Serial Flash array. Access
—Read Password
—Write Password
to the memory array can be controlled by two 64-bit
passwords. These passwords protect read and write
operations of the memory array.
•Programmable Passwords
•32-bit Response to Reset (RST Input)
•8 byte Sector Write mode
The X76F101 features a serial interface and software
protocol allowing operation on a popular two wire bus.
•1MHz Clock Rate
•2 wire Serial Interface
•Low Power CMOS
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 (CS) input,
allowing any number of devices to share the same bus.
—3.0 to 5.5V operation
—Standby current Less than 1µA
—Active current less than 3 mA
The X76F101 also features a synchronous response to reset
providing an automatic output of a hard-wired 32-bit
•High Reliability Endurance:
—100,000 Write Cycles
data stream conforming to the industry standard for
memory cards.
•Data Retention: 100 years
•Available in:
TM
The X76F101 utilizes Xicor’s proprietary Direct Write
—8 lead PDIP, SOIC, MSOP and ISO Card
—SmartCard Module
cell, providing a minimum endurance of 100,000 cycles and
a minimum data retention of 100 years.
Functional Diagram
8K BYTE
CS
CHIP ENABLE
SerialFlash ARRAY
ARRAY 0
DATA TRANSFER
SCL
SDA
(PASSWORD PROTECTED)
ARRAY ACCESS
ENABLE
Interface
Logic
112 Byte
32 BYTE
SerialFlash ARRAY
ARRAY 1
(PASSWORD PROTECTED)
PASSWORD ARRAY
AND PASSWORD
VERIFICATION LOGIC
RST
RETRY COUNTER
RESET
RESPONSE REGISTER
7025 FM 01
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
Characteristics subject to change without notice
1
7065 -1.1 4/17/98 T2/C0/D0 SH