Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: DS3650 battery-backup controller and supervisor
Edited by the Electronicstalk Editorial Team on 31 August 2007
Battery controller suits security
applications
The DS3650 integrates a battery-backup controller, system power monitor, CPU supervisor, temperature sensor, and two tamper-detection comparators.
Maxim Integrated Products has released the DS3650 SPI-compatible secure battery-backup controller and supervisor with temperature and voltage monitoring Designed to meet the stringent requirements of PCI-PED (payment card industry-PIN entry device) certification, the DS3650 integrates a battery-backup controller, system power monitor, CPU supervisor, temperature sensor and two tamper-detection comparators
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The security features of the DS3650 make it ideal for point-of-sale (POS) terminals, PIN pads, and other equipment where data protection and security is critical.
The DS3650 provides two tamper-detection comparator inputs to interface with, and provide low-power continuous monitoring of, resistive antitamper meshes, external sensors and digital interlocks.
This secure supervisor constantly monitors primary power.
In the event of failure, it automatically switches to an external battery power source to keep the device and external circuitry alive.
The DS3650 also constantly monitors battery voltage and initiates a tamper response when the battery voltage becomes abnormal.
To facilitate recovery analysis after a tamper event occurs, an elapsed-time seconds counter freezes the value of a free-running 32bit counter.
Additionally, a user-programmable, internal digital temperature sensor provides a tamper response in the event of a thermal attack and freezes temperature and voltage values for recovery analysis.
Packaged in a lead-free, 4 x 4mm, 16-ball CSBGA for added security, the DS3650 is fully specified over the -40C to +85C extended temperature range.
For tracing purposes, each device is inscribed with a 4bit serial number.
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