10, 2014

Innovations in the PC-3000 Flash. Testing of a new Power Control Adapter for NAND-Flash microchips is finalized

The research and development on reading data from the damaged NAND-Flash microchips take a great deal of time in ACE Lab company. The experiments have proved the fact of the positive influence of supply voltage on the quality of reading some up-to-date “problematic” microchips like MLC and TLC, as many bit errors are appearing during the memory chip reading process. There is no way to get rid of these errors and it is impossible to use the passive and statistic methods to improve the quality of reading.

As a result of our research, we have developed a specialized Power Control Adapter. Its concept and capabilities encompass the readiness to solve not only many today tasks but also meet the future challenges.

Technical features of the new Power control adapter: 

  • Voltage range: 0.8V – 5V
  • Change step: 0.05V
  • Number of channels: 2
  • Number of sources: 4, by 2 in each channel (independently switched)
  • Type of sources: 2 linear transducers, 2 impulse transducers
  • Current limiting possibilities: 100mA, 150mA, 200mA, 300mA, 500mA, 1.5A, without limitation
  • The maximum number of memory chip pins accounted for an arbitrary switching: 33 Voltage indicators for each channel
  • Delay in buffer elements: < 3 ns

Capabilities of the new Power control adapter: 

  • The capability to smoothly and independently change the power supply voltage at the external boundary pins of the memory chip core (Vcc) and at the pins of the input-output buffer (VccQ) supply circuit

  • The capability to change the voltage level not only in the currently known power supply pins of memory chip, but also in any of the VSP (Vendor Specific Point), NC (not connected) and RESERVED pins. A fully software pin configuration control is done at the convenient intuitive interface

  • Full integration of power control into the whole reading and readout modes of the PC-3000 Flash allows to make a new special reading modes for the “problematic” TLC chips

  • The capability to select the optimal voltage for readout and its combination with the variable voltage of Read Retry command and the comprehensive principles allow to get the best possible result of reading with “problematic” TLC chips with a lot of bit errors or unreadable pages

  • The capability to work with memory chips that have power supply different from the default range of 2.7V – 3.6V (for example, memory chips with power supply voltage 1.8V or 2.5V, and also the chips with the double voltage)

  • The capability to set the limited range of peak current for memory chip. This feature helps to protect memory chip from the high voltage and possible damage during the wrong chip orientation. Also it helps to supply power the whole massive of the memory chips in SSD without unsoldering (up to 32 microchips, current load is about 1,5 A)

  • The full compatibility with the PC-3000 Flash Ver 3.0 Reader and all existing PC-3000 Flash adapters. It will allow to provide the extended power supply functionality for all known memory chips which are existing in the PC-3000 Flash database or chips which will be added in future

  • The capability to provide the variable power supply for the standard TSOP-48 socket inside the PC-3000 Flash Reader without any additional adapters

  • The capability to use the external power supply unit for the adapter and the capability to output the generated power supply voltage for the external circuitry

  • The high-frequency buffer elements with two feeder circuits allow to get the best reading result without interference during the reading process

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