Features
• Compatible with Many Existing Memory Card Applications
• 1-Kbit EEPROM User Memory
– Two 256 x 1 Application Zones
– One 512 x 1 Application Zone
– Protected by Security Logic
– Vpp Internally Generated for Single Voltage Operation
– 2 µs Read Access Time
– 2 ms Write Cycle (Self-timed)
• Additional EEPROM Memory for Code Storage
– Three OTP Areas, 144 Bits Total
– 64-bit Code-protected Zone
• Security Features
– Stores and Validates Security Codes
– Maximum of Four Incorrect Security Code Attempts
– Provides Security Code Protection During Transportation
• High Reliability
– Endurance: 100,000 Cycles
– Data Retention: 10 Years
– ESD Protection: 4,000V Minimum
• Manufactured Using Low-power CMOS Technology
• Temperature Range from −25°C to +85°C
• ISO 7816-compliant Card Modules
1K Secure
EEPROM
with Three
Application
Zones
AT88SC1003
Description
The AT88SC1003 is a low-cost synchronous integrated circuit, designed for use in
prepaid and loyalty smart card applications. The AT88SC1003 provides 1024 bits of
serial EEPROM (Electrically Erasable and Programmable Read Only Memory) within
three application zones, plus 64 bits in a code-protected zone. Security logic provides
access protection through use of a 16-bit security code.
Additional EEPROM memory is available to hold unalterable information about the
card history. Separate zones are available for data written by the fabrication facility,
card manufacturer and card issuer. After personalization of the memory by the issuer,
an internal fuse is blown that secures critical memory areas of the device and config-
ures the IC for use by the end customer. The action of blowing this fuse is irreversible.
The AT88SC1003 is manufactured using low-power CMOS technology. EEPROM
programming functions are accomplished using an internally generated high-voltage
pump for single voltage supply operation. Program timing is controlled internally.
Memory endurance is guaranteed to 100,000 erase/write cycles. Ten-year data reten-
tion is guaranteed.
Table 1. Pin Configuration
Pad
VCC
GND
CLK
I/O
Description
ISO Module Contact
Supply Voltage
Ground
C1
C5
C3
C7
C2
C8
C4
Serial Clock Input
Serial Data Input/Output
Reset Input
RST
PGM
FUS
Program Input
Fuse Input
Rev. 2035A–SMEM–4/02
1