DS1972-F5 1024-Bit EEPROM iButton (Large Stock for Sales)

DS1972-F5 iButton

Place of Origin: China(Mainland)                   Part Number: DS1972-F5                 Brand Name: Dallas / Maxim Integrated
Min. Order Quantity: 100 Pieces                     Port: Guangzhou                                 Payment Terms: T/T, Western Union, Paypal

DS1972-F5 1024-Bit EEPROM iButton(Large Stock)

Description

The iButton® 256-bit EEPROM (DS1972) is a 1024-bit, 1-Wire® EEPROM chip in a rugged iButton package. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS1972 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the device. The registration number is used to address the device in a multidrop, 1-Wire net environment.

Special Features

• 1024 Bits of EEPROM Memory Partitioned into Four Pages of 256 Bits
• Individual Memory Pages can be Permanently Write Protected or Put in EPROM-Emulation Mode (“Write to 0”)
• Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
• IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, typical)
• Reads and Writes Over a Wide Voltage Range of 2.8V to 5.25V from -40°C to +85°C
• Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps Using 1-Wire Protocol

Common iButton Features

• 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 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
• Designed to meet UL#913 (4th Edit.); Intrinsically Safe Apparatus, Under Entity Concept for use in Class I, Division 1, Group A, B, C and D Locations, contact Dallas Semiconductor for certification schedule

Applications

• Work-in-progress Tracking
• Electronic Travelers
• Access Control and Storage of Calibration Constants

The DS1972-F5 can be found on its data sheet here: DS1972-F5 DataSheet.

*Note: iButton and 1-Wire are registered trademarks of Maxim.