| Status |
| Part Number |
Status |
| DS1992 |
Active: In production, but some versions are no longer available. |
| DS1993 |
Active: In production, but some versions are no longer available. |
| Description |
The DS1992/DS1993 memory iButtons (hereafter referred to as DS199_) are rugged read/write data carriers that act as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton is attached. Data is transferred serially through the 1-Wire® protocol that requires only a single data lead and a ground return.
The scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command transfers the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS199_ to provide a guaranteed unique identity that allows for absolute traceability. 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 DS199_ to be easily used by human operators. Accessories permit the DS199_ to be mounted on almost any surface including plastic key fobs, photo-ID badges, and PC boards. Applications include access control, work-in-progress tracking, electronic travelers, storage of calibration constants, and debit tokens. |
This product contains lithium-metal batteries. See applicable regulations for transport requirements for batteries in equipment.
| Key Features |
|
Applications/Uses |
- 4096 bits of Read/Write Nonvolatile Memory (DS1993)
- 1024 bits of Read/Write Nonvolatile Memory (DS1992)
- 256-bit Scratchpad Ensures Integrity of Data Transfer
- Memory Partitioned into 256-bit Pages for Packetizing Data
- Data Integrity Assured with Strict Read/Write Protocols
- Operating Temperature Range from -40°C to +70°C
- Over 10 years of data retention
- 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
- Multidrop Controller for MicroLAN
- Digital Identification and Information by Momentary Contact
- Chip-Based Data Carrier Compactly Stores Information
- Data Can be Accessed While Affixed to Object
- Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
- Standard 16mm Diameter and 1-Wire Protocol Ensure Compatibility with iButton Family
- Button Shape is Self-Aligning with Cup-Shaped 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
- Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class I, Division 1, Group A, B, C, and D Locations
- Underwriters Laboratories (UL®) Recognized
|
|
- Debit Tokens
- Electronic Travelers
- Storage of Calibration Constants
- Work-in-Progress Tracking
|
| Diagram |
 |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
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