ST1335, ST1336, ST1355

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ST1335D, ST1336D ST1355D
5-Contact Memory Card IC 272-bit EEPROM With Advanced Security Mechanisms and Inlock System
DATA BRIEF
s s

s s s

s s s s s

5 V Single Supply Voltage Counting Capability (two options) up to 32767 (85 -1) 8 times reloadable, up to 4095 (84-1) Active Authentication Function (ST1335D/55D) Cipher Block Chaining Function (ST1355D) Memory Divided into : 16 bits of Circuit Identification 48 bits of Card Identification 40 bits of Count Data 16 bits for Validation Certificate 24 bits of Transport Code 64 bits of Issuer Data (ST1336D) or Authentication Secret Key (ST1335D/55D) 32 bits of Anti-tearing Flags (optional) 56 bits of User data (optionally not erasable) More than 500,000 Erase/Write Cycles More than 10 Years Data Retention 3.5 ms Programming Time at 5 V (typical) 500 uA Supply Current at 5 V (typical) 250 uA Stand-by Current at 5 V (typical)

Micromodule (D15)

Wafer

DESCRIPTION The members of the ST1335D/36D/55D family are principally designed for use in prepaid Phonecard applications. Each is a 272-bit EEPROM device, with associated security logic and special fuses to control memory access. The memory is arranged as a matrix of 34 x 8 cells, accessed in a serial bitwise fashion for reading and programming, and in a byte-wise fashion for internal erasing. An on-chip

Figure 1. Logic Diagram
VCC

RST

Table 1. Signal Names
CLK RST I/O VCC GND Clock Reset Serial Data Input / Output Supply Voltage

ST1335D ST1336D ST1355D CLK

I/O

GND
Ground
AI03729

June 2000
Complete data available under NDA.

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ST1335 DATASHEET