Self-powered serial EEPROM targets IoT and battery markets

A single-wire EEPROM with only two-pins (data pin and ground pin) are aimed at IoT, wearables, consumable, battery and cable identification markets. The AT21CS01 from Atmel is self-powered, eliminating the need for a power source or Vcc pin, with a parasitic power scheme over the data pin. They are claimed to provide best-in-class, low power standby of 700nA, 200µA for write current and 80µA for read current at 25°C.
The device’s parasitic power scheme over a single data pin eliminates the need for external capacitors and rectifiers, says the company. The high write endurance capability allows more than one million cycles for each memory location to meet the requirements for today’s high-write endurance applications.
A plug-and-play 64bit unique serial number in every device, makes it suitable for connected devices including smart fitness bands and healthcare devices. ESD is described as industry leading (IEC 61000-4-2 Level 4 ESD compliant), making it suitable for applications such as cables required to tolerate exposure to the outside environment or direct human contact.
Using a single pin from the MCU/MPU without the need to route the Vcc to the device saves “significant” board space saving and simplified layout.
Following the I2C protocol, the EEPROM facilitate migration from existing EEPROM with less overhead and capability to connect up to eight devices on the same bus, claims the company. In addition to a security register with a 64bit factory programmed serial number, an extra 16 bytes of user programmable and permanently lockable storage, guarantees the unique serial number for inventory tracking, asset tagging and to permanently protect the data if needed.

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Cores offer lowest power consumption connectivity IP for wearables and IoT

Designed to enable the integration of ultra-low power communications in SoCs targeting wearables, IoT and other long battery life connected devices that need to be cost-sensitive, Imagination Technologies has announced the first members of its Ensigma Whisper flexible connectivity IP family.

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Sensor hubs is low power to extend battery life

At just 75uW (68µA at 1.1V) active power consumption, the ArcticLink 3 S2 LP sensor hub from QuickLogic is the lowest power programmable sensor hub on the market, claims the company.

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LDO regulator ICs meet extended battery needs

LDO regulator ICs from Toshiba are available in a small package and are suited to a variety of mobile devices that require extended battery lives and high-density board assembly, including wearable devices, smartphones, tablet PCs and portable games.
The 200mA output TCR2LN/LE/LF series features ultra-low quiescent bias current and low dropout voltage.
They are available in fixed output voltages between 0.8 and 3.6V and feature over-current protection and an auto-discharge option. Using a fine analogue IC process for advanced CMOS, they realise low bias current characteristics by reducing the bias current to 2µA (max) in comparison to the existing TCR2EN series.
The ICs are available now, in small SDFN4 (0.8 x 0.8 x 0.38mm) and general purpose SOT-553 and SOT-25 packages.

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