DeepCover Security Manager for NV SRAM Control with RTC and Thermal Tamper Detection

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.

The DeepCover Security Manager (DS3605) is the integration of a nonvolatile (NV) SRAM controller, real-time clock (RTC), CPU supervisor, and temperature sensor to provide tamper protection for secure transaction terminals and other security-sensitive applications. The RTC can be used with a common 32.768kHz 6pF watch crystal. Access to the time-of-day and tamper monitoring is conducted through an I²C-compatible interface.

In the event of a primary power failure, an external battery source is automatically switched on to keep the internal and external memory, RTC, and tamper-detection circuitry alive. Additionally, output signals are provided to reset the microprocessor, indicate battery operation, and power external circuitry from either the system supply or the battery.

Applications

* Alarm Systems * Automated Teller Machines * Digital Cinema Technology * Gaming * Healthcare * IT Security * Network Servers * PIN Pads * POS * Software-Defined Radios

* RTC with Leap Year Compensation Valid Up to 2100

* Uses Standard 32.768kHz 6pF Watch Crystal

* Four General-Purpose Tamper Detect Comparators with Associated Reference

* On-Chip Temperature Sensing for Detection of Thermal Attacks

* Programmable Temperature Set-Points

* Programmable Memory Erase Time from 0.01 to 100 Seconds

* Timestamping of Tamper Events

* Integrated CPU Supervisor

* Service and Case Switch Digital Inputs

* On-Chip Random Number Seed Generator

* On-Chip Glitch Filter

* I²C-Compatible Interface

* Low Power Consumption (< 4µA at +25°C)

* 3.0V to 3.6V Single-Supply Operation