®
IS23SC1604
ISSI
ADVANCE INFORMATION
APRIL 2003
16-KBIT SECURED SERIAL EEPROM
FEATURES
DESCRIPTION
IS23SC1604 is a low-cost, low-power, highly secured
16K bits (2K x 8) serial EEPROM. It is fabricated using
ISSI’s advanced CMOS technology.
• 16K serial EEPROM with security features
• Comply with ISO/IEC Standard 7816-3
Synchronous Protocol
The security features of IS23SC1604 provide high levels
of memory security protection for smart card applications.
The memory is partitioned into four application zones.
Each individual application zone is protected by multiple
security codes from unauthorized read/write/erase
access to the zone. In addition, an internal security fuse
is available for the card issuer to fully personalize the
device before releasing it to customer.
• Store and validate security codes
• Four protected application zones
• Provide transport code security
• Single 5V power supply for read/write/erase
operations
• Low power operation:
The device also features an internal high-voltage charge
pump for memory programming, 1,000,000 write/erase
cycles and ten years of data retention.
— 15 µA (max.) standby current
— 3 mA (max.) read current at 300 KHz
— 4 mA (max.) write/erase current
• 2 ms read access time at 300 KHz;
5 ms write cycle time
• 300 KHz serial clock rate
• High ESD protection: > 4 KV
• High reliability:
— 1,000,000 erase/write cycles
— 10 years data retention
Pin Configuration: 8-pin Plastic DIP
• Standard CMOS Process
• Wide operating temperature range
Vcc
RST
CLK
FUS
C1
C2
C3
C4
C5
C6
C7
C8
GND
NC
—
0°C to +70°C Commercial; –40°C to +85°C
Industrial
• Data access only after validation of security
code
I/O
PGM
• Permanent invalidation of device upon eight
consecutive failed attempts to enter the correct
security code
• Separate read/write/erase access protections
for each application zone
• Allow the memory chip to be personalized if the
internal security fuse is not blown. If the internal
security fuse is blown, maximum security protection
of the memory will always be enabled.
Copyright © 2003 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability
arisingoutoftheapplicationoruseofanyinformation, productsorservicesdescribedherein. Customersareadvisedtoobtainthelatestversionofthisdevicespecificationbeforerelyingonany
publishedinformationandbeforeplacingordersforproducts.
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION Rev. 00E
1
04/10/03