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Atmel unveils self-powered single-wire EEPROM

Posted: 11 Aug 2015     Print Version  Bookmark and Share

Keywords:EEPROM  Internet of Things  wearable  Atmel 

Atmel Corp. has rolled out what it flaunts as the industry's most innovative single-wire EEPROM with only two-pins, a data pin and ground pin for operation. The devices are aimed at the Internet of Things (IoT), wearables, consumable, battery and cable identification markets.

According to the company, the devices are self-powered, eliminating the need for a power source or Vcc pin, with a parasitic power scheme over the data pin. These devices provide best-in-class ultra-low power standby of 700nA, 200μA for write current and 80uA for read current at 25°C, delivering just one-third of the power of leading competitors.

With confined spacing in smaller IoT, wearables, battery and cable identification applications, Atmel's AT21CS01/11 devices eliminate the need for external capacitors and rectifiers with its parasitic power scheme over a single data pin. Additionally, the devices have an ultra-high write endurance capability to allow more than one million cycles for each memory location to meet the requirements for today's high-write endurance applications.

The AT21CS01/11 products include a simple product identification with a plug-and-play 64bit unique serial number in every device, making the device ideal for smart, connected devices in today's IoT world including wearables such as smart fitness bands and healthcare devices. The devices also deliver industry-leading electrostatic discharge (ESD) rating (IEC 61000-4-2 Level 4 ESD Compliant), so applications such as cables, consumables, etc. can tolerate exposure to the outside environment or direct human contact while still delivering flawless performance.

The devices follow the I2C protocol, allowing for an easy migration from existing EEPROM with less overhead and capability to connect up to eight devices on the same bus. The AT21CS01 devices offer a security register with a 64bit factory programmed serial number and an extra 16bytes of user programmable and permanently lockable storage, delivering a guaranteed unique serial number for inventory tracking, asset tagging and can permanently protect the data if needed.

There are two variants of the device available to support different voltage requirements. Atmel's AT21CS01 is targeted for low-voltage applications operating at 1.7V to 3.6V. For applications that require higher voltage ranges such as Li-Ion/polymer batteries, the AT21CS11 will support 2.7V to 4.5V operating range and is the geared product to meet IEEE1725 specifications for electronic identification of battery packs.

The Atmel AT21CS01 devices are available in production quantities in 3-lead SOT23, 8-lead SOIC and 4-ball WLCSP. Pricing starts at $0.32 in 5,000-piece quantities. The AT21CS11 will be available in 4Q15.





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