Security manager for sensitive data applications

Maxim Integrated Products has introduced the DS3644 security manager with 1,024 bytes of non-imprinting memory to store sensitive data in government and military systems.

Internal tamper monitors protect against clock, electrical and temperature tampering, while tamper-detection inputs for external sensors enable complete customisation.

The on-chip non-imprinting memory allows the end user to selectively clear the memory based on user-specified tamper events.

This memory system is said to ensure immediate data erasure in response to tampering, therefore improving system security over SRAM-based implementations.

The DS3644 is most appropriate for applications that require a higher level of security as well any application where more than one tamper trigger needs to be monitored.

The DS3644 is an ultra-low-power product that provides tamper detection regardless of the power source.

An 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 4uA of battery current, the DS3644 can retain critical information and monitor for tampers while on battery power.

The DS3644 is fully specified over the -55C to +95C extended temperature range.

It is available in a 7 x 7mm lead-free, 49-ball CSBGA.

An evaluation kit will be released shortly.

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