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X76F041HE-3

Description
PASS TM SecureFlash
File Size106KB,21 Pages
ManufacturerXicon Passive Components
Websitehttp://www.xicor.com
Download Datasheet View All

X76F041HE-3 Overview

PASS TM SecureFlash

A
PPLICATION
N
OTE
A V A I L A B L E
AN83 • Development Tools XK76C
Password Access Security Supervisor
4K
X76F041
PASS
TM
SecureFlash
DESCRIPTION
4 x 128 x 8 Bit
FEATURES
• 64-Bit Password Security
• Three Password Modes
—Secure Read Access
—Secure Write Access
—Secure Configuration Access
• Programmable Configuration
—Read, Write and Configuration Access
Passwords
—Multiple Array Access/Functionality
—Retry Register/Counter
• 8 Byte Sector Write
• (4) 1K Memory Arrays
• ISO Response to Reset
• Low Power CMOS
—50
µ
A Standby Current
—3mA Active Current
• 1.8V to 3.6V or 5V “Univolt” Read and Program
Power Supply Versions
• High Reliability
—Endurance: 100,000 Cycles
—Data Retention: 100 Years
—ESD 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 configuration.
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-configured
32-bit data stream conforming to the ISO standard for
memory cards.
The X76F041 utilizes Xicor’s 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
080–0FF
CS
000–07F
PASSWORD ARRAY AND
PASSWORD VERIFICATION
LOGIC
100–17F
RST
ISO RESET RESPONSE
DATA REGISTER
180–1FF
CONFIGURATION
REGISTER
(4) 16 x 64
SECUREFLASH
ARRAYS
7002 ILL F01
©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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