Active Member
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[China]
Address: Room421, Fuquan Bldg A, Qingquan Road, Longhua District, Shenzhen,China 518109
Contact name:Dora
Shenzhen A.N.G Technology Co., Ltd |
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DS1990A Magnetic Ibutton Key Fob / holders in Cabinet Lock and Sauna Locker Room
Description
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 DS1990A and therefore allows multiple DS1990A devices to reside on a single data line.
The durable MicroCan package is highly resistant
to environmental hazards such as dirt, moisture and shock. Its
compact coin–shaped profile is self–aligning with mating
receptacles, allowing the DS1990A to bused easily by human
operators. Accessories permit the DS1990A to be mounted on plastic
key tabs, photo ID badges, printed circuit boards or any smooth
surface of an object. Applications include access control,
work–in–progress tracking, tool management and inventory control.
Datasheets | DS1990A |
|---|---|
| Product Photos | DS1990A-F5+ |
| 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-Wire® 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 |
| Product Training Modules | Lead (SnPb) Finish for COTS Long-Term Supply Program |
| RoHS Information | IButton RoHS Compliance Plan |
| Standard Package | 1 |
| Category | Memory Cards, Modules |
| Family | Specialized |
| Series | iButton® |
| Memory Type | ROM |
| Memory Size | 8B |
| Speed | * |
| Technology | * |
| Operating Temperature | * |
| Dynamic Catalog | iButton® Series |
| Other Names | DS1990AF5 |
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