Ds1990A Serial Number Magnetic Ibutton Key Fob with Holder

Shot Description:

DS1990A Serial Number Magnetic Ibutton Key Fob with Holder The DS1990A Serial Number iButton is a rugged data carrier that acts as an electronic registration number for automatic identification. The DS1990A consists of a factory-lasered, 64-bit ROM that includes an unique 48-bit serial number, an 8-bit CRC and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire protocol which requires only a single data lead and aground…

Description:

DS1990A Serial Number Magnetic Ibutton Key Fob with Holder

The DS1990A Serial Number iButton is a rugged data carrier that acts as an electronic registration number for automatic identification. The DS1990A consists of a factory-lasered, 64-bit ROM that includes an unique 48-bit serial number, an 8-bit CRC and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire protocol which requires only a single data lead and aground return. The DS1990A is fully compatible with the DS1990 Serial Number iButton but provides the addi-tional 1-Wire protocol capability that allows the Search ROM command to be interpreted by the DS1990A and therefore allows multiple DS1990A devices to reside on a single data line.

DS1990A SPECIAL FEATURES

•Upgrade of DS1990 allows multiple Serial Number

iButtons to reside on a common bus

•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

Mfg Application Notes	Using a UART to Implement a 1-Wire Bus Master
	Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
	Reading and Writing 1-Wire® Devices Through Serial Interfaces
	1-Wire Communication Through Software
	Guidelines for Reliable Long Line 1-Wire Networks
	1-Wire Software Resource Guide Device Description
	Software Methods to Achieve Robust 1-Wire® Communication in iButton® Applications
	1-Wire Search Algorithm
	Using the DS2480B Serial 1-WireÂ® Line Driver
	Advanced 1-Wire Network Driver
	White Paper 2: Using the 1-Wire® Public Domain Kit
	White Paper 5: Using 1-Wire APIs for Data Sheet Commands
	What Is an iButton Device?
	Understanding the DS1WM Synthesizable 1-Wire Bus Master
	Create a 1-Wire Master with Xilinx PicoBlaze

About us: Shenzhen A.N.G Technology CO., Ltd located in Shenzhen, is a high-tech manufacturer specialized in production Radio Frequency Identification Smart Card, NFC Label and Card Reader.

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2. Better Price With High Quality And Professional Package.
3. Be Specialized In RFID Tag, NFC Tag And Smart Card For Long Time.
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5. Professional Designer, Experienced Salesman And Workers.
6. Advanced Production Experience and Professional R&D Capability.

Packing:

rfid ibutton card-6

Applications:

Waterproof DS1990A Ibutton Key Fob With 8 Kbits RAM Capacity , Stainless Steel Material

Tags:

Ds1990A

IButton

Key fob

Magnetic ibutton

Touch Memory Card