Detailed Product Description

ibutton,

Smart Card (TM card, Information Button, Touch Memory)

Type: TM1991L-F5

Dimension: diameter 16.25MM, high 5.9MM

Function: anti-water, anti-shake, anti-rust; the shell is made by 304 stainless steel, never rust; the chip is made by new TM1990B wafer, unique 64bit serial number of the world. Full compatible with ds1991L-F5 .

SPECIAL FEATURES
ß  1,152-bit secure read/write, nonvolatile
memory
ß  Secure memory cannot be deciphered
without matching 64-bit password
ß  Memory is partitioned into 3 blocks of 384
bits each
ß  64-bit password and ID fields for each
memory block
ß  512-bit scratchpad ensures data transfer
integrity
ß  Operating temperature range: -40°C to
+70°C
ß  Over 10 years of data retentionl 

ß  Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48-
bit serial number + 8-bit CRC tester) assures
absolute traceability because no two parts are
alike
ß  Multidrop controller for MicroLAN
ß  Digital identification and information by
momentary contact
ß  Chip-based data carrier compactly stores
information
ß  Data can be accessed while affixed to object
ß  Economically communicates to bus master
with a single digital signal at 16.3k bits per
second
ß  Standard 16 mm diameter and 1-Wire
protocol ensure compatibility with iButton
family
ß  Button shape is self-aligning with cup-
shaped probes
ß  Durable stainless steel case engraved with
registration number withstands harsh
environments