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Security manager provides superior data protection

With 1024 bytes of on chip nonimprinting memory and an ultra low battery current, Maxim's says its DS3660 is optimised to provide users with the highest level of security.

The device features an internal 1.8V bias source to power low voltage external SRAM and is configurable to operate with a low voltage microprocessor for battery operated devices. Combining internal tamper monitors with tamper detection inputs that interface with external sensors, the DS3660 is an ultra low power product that is designed to provide tamper detection regardless of the power source.

The on chip nonimprinting memory, which consists of eight 128byte banks, can be selectively cleared by end users based on user specified tamper events. The on chip battery backup controller constantly monitors the main power (VCC) and automatically switches to the battery (VBAT) when the main power is too low or not present at all. Drawing only 4µA (typ) of battery current, the security manager can retain critical information and monitor tampers while on battery power.

Fully specified over the -55 to 95°C extended temperature range, the device is available in a 7 x 7mm, lead free, 49ball CSBGA package. Maxim says it is most appropriate for ultra secure applications such as government and military systems, as well as any application where more than one tamper trigger needs to be monitored.

Laura Hopperton

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