Description
Maxim Integrated DS2430AP+T&R EEPROM Memory Chip, 256bit, 2.8 → 5.25 V 6-Pin TSOC
1-Wire and iButton
The iButton is a computer chip enclosed in a 17mm diameter stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go. It can be mounted anywhere because it is rugged enough to withstand harsh environments, indoors or outdoors. It is small and portable enough to attach to a key fob, ring, watch or other personal items. It can be used daily for applications such as access control to buildings and computers, asset management, and various data logging tasks.
The DS2430AP+T&R is a 256bit 1-wire EEPROM in 6 pin TSOC package. It identifies and stores relevant information about product to which it is associated. The DS2430A consists of factory lasered registration number that includes unique 48bit serial number, 8bit CRC, 8bit family code (14h) which specifies communication requirements to reader, 256bit of user programmable EEPROM and 64bit one time programmable application register. Data is transferred serially via 1-wire protocol which requires only single data lead and ground return. The 48bit serial number that is factory lasered into each DS2430A provides unique identity that allows for absolute traceability. The TSOC package provides a compact enclosure that allows standard assembly equipment to handle the device easily for attachment to printed circuit boards or wiring. Typical applications include storage of calibration constants, board identification and product revision status.
- 1-wire pull-up voltage range from 2.8V to 5.25V
- Operating temperature range from -40°C to 85°C
- Built-in multidrop controller ensures compatibility with other MicroLAN products
- EEPROM organized as one page of 32bytes for random access
- Reduces control, address, data and power to a single data pin
- Directly connects to single port pin of microprocessor & communicates at up to 15.3Kbits per second
- Product specific information can be accessed with minimal interface
- Data retention is 40 years, write/erase cycles (endurance) is 200K at 25°C and 50K at 85°C
- Recovery time is 5μs at RPUP = 2.2Kohm and maximum reset low time is 960μs
- Power to read and write the DS2430A is derived entirely from 1-wire communication line
Applications
Embedded Design & Development
Manufacturer:Maxim
Datasheet:Maxim/DS2430A.pdf
