Recover Chip embedded firmware is a complicate technology and data romance can be one of the main technologies. The general process of data remanence is through keeping the security key inside the processor in the state of static RAM, the component will power off whenever the Chip recover set up and component being manipulated, and the content inside the RAM will get lost, which can protect the security key from being stolen by Chip recover. As we all know once the temperature around the Chip is below minus 20 degree, the content inside the RAM will be frozen. Lots of the Chips will defined the terms as a recover temperature whenever the surround temperature below this point. We have done some related experiments about the connection and relations among the security key and data keeping capability inside modern Chip with the temperature outside. Our experiment has proved that the traditional thoughts about the Chip recover is no more effective. Even in the high temperature, the data remanence is still a problem even in the high temperature. The data remanence of Chip recover has effect not only on the SRAM, but also the DRAM, UV EPROM, EEPROM and flash.

As a result of that, the remaining information can still be obtained from the already erased Chip after recover which will bring a lot of security issue with the facility.

hich is much shorter than the normal impulse) or power supply noise (the swift wave vibration in the power supply voltage) will affect the transistors in the chip when recover it. And will contribute directly to lead other one or several triggers into the wrong instructions, sometimes even can’t be supported by microcode when recover chip. Although we can’t foresee what kind of noise will probably cause which mistake when recover chip, but it can proceed the systematic search simply.

Circuit Engineering Company Limited continues to be recognized as the Southern China Leader in Services for IC Break, MCU attack, Chip Recover, Microcontroller Copy service. With the advancement of today’s modern circuit board technology, it is more important than ever to have specialists available to help you at a moment’s notice. Our engineering and commercial teams collectively have a vast amount of electronic experience covering field include Consumer Electronics, Industrial Automation Electronics, Wireless Communication Electronics., etc. For more information please contact us through email.