EET

Security manager featuring tamper detection suits smart meters

Maxim Integrated Products introduces the DS3660, a security manager with 1,024 bytes of non-imprinting memory to securely store sensitive data. The on-chip non-imprinting memory, which consists of eight 128-byte banks, can be selectively cleared by end users based on user-specified tamper events. Additionally, the DS3660 device features an internal 1.8-V bias source to power low-voltage external SRAM that can be used to store less critical data, and it 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, this device offers the highest level of system security. The DS3660 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.

The DS3660 is an ultra-low-power product that provides tamper detection regardless of the power source. 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 4 microamps (typ) of battery current, the DS3660 can retain critical information and monitor tampers while on battery power.

The DS3660 is fully specified over the -55° to 95° C extended temperature range. It is available in a 7 x 7 mm, lead-free, 49-ball CSBGA package.

For more information, contact Maxim Integrated Products, 120 San Gabriel Dr., Sunnyvale, CA 94086. Phone: (408) 737-7600.

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