Maxim adds security to chips

Maxim Integrated Products has introduced a security manager for storing sensitive data on-chip.

The 1024 byte of on-chip nonimprinting memory consists of eight 128-byte banks, can be selectively cleared by end users based on user-specified tamper events.

The chip, the DS3660, has an internal 1.8V 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.

It is designed to provide 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 4µA (typ) of battery current, the chip is designed to retain critical information and monitor tampers while on battery power.

The device is expected to be used for secure data applications like government and military systems, as well as any application where more than one tamper trigger needs to be monitored.

The DS3660 is specified over the -55 to +95 deg C extended temperature range.

It is available in a 7x7mm, lead-free, 49-ball CSBGA package