ST1336

ST1335, ST1336 ST1355 5-Contact Memory Card IC 272-bit EEPROM with Advanced Security Mechanisms DATA BRIEFING 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 (ST1335/1355) Cipher Block Chaining Function (ST1355) 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 (ST1336) or Authentication Secret Key (ST1335/1355) – 32 bits of Anti-tearing Flags (optional) – 56 bits of User data (optionally not erasable) 1 Million Erase/Write Cycle (minimum) 10 Year Data Retention (minimum) 3.5 ms Programming Time at 5 V (typical) 500 µA Supply Current at 5 V (typical) 250 µA Stand-by Current at 5 V (typical) 1 Micromodule (D10) 1 1 1 Micromodule (D15) Wafer DESCRIPTION The members of the ST1335/1336/1355 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 Data Input / Output Supply Voltage ST1335 ST1336 ST1355 CLK I/...