Security manager IC
25 May 2011
DSP, Micros & Memory
Maxim’s newest security manager combines a patented nonimprinting-memory scheme with an ultra-low battery current for applications requiring the highest level of security.
Recently rolled out by Maxim, the DS3660 is a security manager with 1024 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 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, the DS3660 offers the highest level of system security. It is most appropriate for ultra-secure applications like government and military systems, as well as any application where more than one tamper trigger needs to be monitored.
The IC is a low-power product that provides tamper detection regardless of the power source. The on-chip battery backup controller constantly monitors the main power and automatically switches to the battery when the main power is too low or not present. Drawing only 4 μA of battery current, the DS3660 can retain critical information and monitor tampers while on battery power. The device is fully specified over the -55°C to +95°C temperature range, and is available in a 7 x 7 mm, lead-free, 49-ball CSBGA package.
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