SLE7736 Datasheet, PDF (7/8 Pages) Infineon Technologies AG – Security & Chip Card ICs

Eurochip 77
2
General Description
SLE 7736/36E is designed for applications in prepaid telephone cards and pay TV. The chip
consists of an EEPROM memory of 221 bit, a ROM of 16 bits, a control/security unit and a special
computing unit for chip authentication.
Programming Unit
Authentication
Unit
Address
Unit
Authenti-
cation Key 1
(PROM)
optional
Authenti-
cation Key 2
(PROM)
Memory Unit
Data Areas (PROM)
Counter
(PROM / EEPROM)
SLE 7736
Identification Area
40 bit blockable PROM
8 bit Manufacturer Data
16 bit Manufacturer Code
Backup Unit
SLE 7736E
Identification Area
48 bit blockable PROM
16 bit Manufacturer Code
Card-Trash Mechanism
Control Unit (Security Interface)
CLK
I/O
RST
GND
VCC
Figure 3 Block Diagram
• Memory Unit
— Manufacturer Code (16-Bit Code) and Manufacturer Data (3^rd Byte) for unique coding of an
application. For SLE 7736E its recommended to use the 3^rd byte for administration purpose
to uniquely identify the application by the 16-bit manufacturer code and the 3^rd byte;
— Identification Data (e.g. serial number, expiry date);
— Counter;
— Data Areas.
• Address Unit
Setting of the address counter is synchronously with the CLK.
Short Product Information
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2001-12-21