Supervisors to manage next-generation systems: News from Alliance Semiconductor Corp

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Alliance Semiconductor Corp has released its first 13 CPU supervisor product families. Each of the 13 product families comes with multiple package and reset voltage combinations that spawn 125 distinct products. These products are a low-power and cost effective-alternative to industry standard CPU supervisors, addressing 5, 3.3 and 3V applications in wire-line and wireless telecomms, computer, consumer, industrial and medical markets.

"We have leveraged our expertise in designing low-power ICs to optimise the power consumption of our CPU supervisors and offer families of power efficient devices", said Ven Shan, Vice President of Marketing, Analog and Mixed Signal Business Unit for Alliance.

"CPU supervisors have been a standard in applications ensuring robust system operation.

Alliance is establishing a base from which to integrate the supervisor function with other analogue blocks to develop versatile system management ICs targeting high-performance and high-reliability systems".

Designed in a submicron CMOS process, Alliance's CPU supervisors operate on power levels that are 20-40% lower than other supervisor products currently available in the market.

Supervisor products provide system designers with the ability to monitor and detect problems related to power supply instability and provide them with an assured and safe system operation.

Features range from the basic power-on-reset function, which is used to maintain the system processor on hold for a minimum of 140ms until the supply voltage stabilises, to products that incorporate manual reset, watchdog timer, power failure/low battery detection, and battery backup switching functions that are commonly required in embedded system applications.

Production quantities are available now with various threshold voltage options (4.63, 4.38, 4.00, 3.08, 2.93 and 2.63V that support 5, 10 and 20% system voltage tolerances), packaging options (SOT-23, SOT-143, PDIP-8, SOIC-8 and Micro SO-8) and in commercial and industrial temperature ranges.

Pricing for ASM809/ASM810 is $0.15 per unit, ASM705/ASM706/7/8 and ASM813L is $0.36 per unit and ASM690A/692/802/805 is $0.48 per unit, all in 10,000-unit quantities.

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