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Security Supervisors
M41ST87: "Securitizor" with Tamper Detect and RAM Clear

M41ST87 Product Page

M41ST87 Additional Technical Information

M41ST87 FeaturesThe M41ST87 Tamper IC is ST's first Supervisor for Secure Applications. Its two independent Tamper Detect circuits can be used to detect and intercept an intrusion into any system where sensitive data must be safeguarded.

The RAM Clear functions can be configured to clear the M41ST87's internal, non-volatile RAM and/or external RAM, as well as generate a processor interrupt. An Oscillator Fail circuit detects tampering with the oscillator, and a Unique Serial Number in each device provides the traceability required in secure applications.

Two independent inputs detect circuit opening or closing.
Options on Alarm:
 

Generate Interrupt

Clear Internal RAM

Clear External RAM

Store Event Time (always)

Output RESET
Oscillator-Fail Detect Bit indicates oscillator had slowed, and crystal may have been tampered with.
Serial RTC with registers for hours, minutes, seconds, day, date, month, year, century, and tenths/hundredths of seconds
128 Bytes of Clearable NVRAM
Programmable Alarm with Repeat Modes - functions in battery-backed mode
Battery Switchover and Write Protect Circuitry
Programmable Watchdog - 62.5ms to 128s time-out period
Power-on Reset / Low-Voltage Detect
Two Reset Inputs pins
2 Independent Early Power-fail Warning circuits (PFI/PFO) with 1.25V Precision Reference
64-bit Unique Serial Number
Programmable Square Wave Generator - 1Hz to 32KHz
Dedicated 32KHz Output
5V and 3/3.3V Operation
–40°C to +85°C
Packaging - 28-lead Embedded Crystal SOIC (Lead-free)
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M41ST87 Applications

Cash Registers

Credit Card Readers
Video Surveillance
Secure Maintenance Records
Telecon and Networking (Encryption)
Gaming
Metering
Secure Memory
Vending Machines
Point of Sale (POS) Terminals
ATMs (Money Machines)
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More Information

M41ST87 Datasheet
More Embedded Crystal Products
Serial RTC Lead-free Packages Program
M41ST87 Additional Technical Information
STM140x FIPS-140 Security Compliant Supervisors