Active Member
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[China]
Address: Floor 1, 2, No. 9, 10th Bystreet, North Delai Road, Shakou, Xiaolan Town, Zhongshan, Guangdong, China
Contact name:Jackey liu
Zhongshan Jiean Electronic Technology Co., Ltd. |
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iButton ds1990a-f5 congtact information button smart card touch memory
TM1990A SPECIAL FEATURES
•TM1990A is fully compatible with DS1990A, DS1990R and i1990A
• Unique 48–bit serial number
• Low-cost electronic key for access control
• 8-bit CRC for checking data integrity
• Can be read in less than 5 ms
•Operating temperature range of -40°C to +85°C
COMMON INFORMATION BUTTON FEATURES
•Unique, factory-lasered and tested 64-bit
•Multi-drop controller for Micro LAN.
•Digital identification by momentary contact.
•Chip-based data carrier compactly stores information.
•Data can be accessed while affixed to an object.
•Economically communicates to bus master with a single digital
signal at 16.3k bits per second.
•Standard 16 mm diameter and 1-Wire protocol ensure compatibility
with INFORMATION BUTTON family.
•Button shape is self-aligning with cupshaped probes.
•Durable stainless steel case engraved with registration number
withstands harsh environments.
•Easily affixed with self-stick adhesive backing, latched by its
flange, or locked with a ring pressed onto its rim.
•Presence detector acknowledges when reader first applies voltage
