ISO 7816 Compatible
2K
X76F200
Secure SerialFlash
DESCRIPTION
256 x 8 bit
FEATURES
• 64-bit Password Security
• One Array (240 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
—2.0 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:
—8 lead PDIP, SOIC, TSSOP, Smart Card and
Smart Card Module
The X76F200 is a Password Access Security Supervisor,
containing one 1920-bit Secure SerialFlash 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 X76F200 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
bidirectional data input and output (SDA).
The X76F200 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 X76F200 utilizes Xicor’s proprietary Direct Write
TM
cell, providing a minimum endurance of 100,000 cycles
and a minimum data retention of 100 years.
Functional Diagram
CS
SCL
INTERFACE
Interface
LOGIC
Logic
PASSWORD ARRAY
Password Array
AND PASSWORD
and Password
VERIFICATION LOGIC
CHIP ENABLE
DATA TRANSFER
Data Transfer
ARRAY ACCESS
Array Access
ENABLE
Enable
Retry Counter
8K BYTE
SerialFlash ARRAY
Erase Logic
ARRAY 0
(PASSWORD PROTECTED)
SCL
SDA
SDA
240 Byte
32 BYTE
SerialFlash ARRAY
EEPROM Array
ARRAY 1
(PASSWORD PROTECTED)
Verification Logic
RST
RESET
ISO Reset
RESPONSE REGISTER
Response Register
RETRY COUNTER
7025 FM 01
RST
©
Xicor, Inc. 1999 Patents Pending
9900-5004.3 1/26/99 EP
1
Characteristics subject to change without notice
XICOR [ XICOR INC. ]
