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Flash Storage Solutions for Embedded Designs
High Reliability Flash SSDs, Cards and Modules for Industrial Applications

Flash Controller Basics - Flash SSD Power Failure Corruption Prevention - Part 3

Posted by John Kuracek on Tuesday, 27 May 2014

This is a continuation of the discussion of Flash SSD Power Failure Corruption Prevention, Recovery and Test 

Flash Controller Basics

To overcome the vulnerability of Flash memory to power glitches, memory system designers have utilized advanced memory management techniques. The most frequently used technique involves usage of Error Correction Code (ECC) to detect the failure and correct the data. The ECC algorithm calculates special code based on the user data and programs this code in the overhead space for each programmed page. When the data is read, the ECC algorithm verifies it against the calculated value. In case of discrepancy, the ECC algorithm can correct the read data (within certain statistical limitation) based on the stored special code. Depending on product specification, Fortasa Memory Systems solutions offer ECC correction capability substantially greater than is recommended by the Flash memory suppliers. This “safety measure” can correct upto 99% of data corruptions in a typical application.

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Flash Memory Basics - Flash SSD Power Failure Corruption Prevention, Recovery and Test – Part 2

Posted by John Kuracek on Monday, 12 May 2014

This is a continuation of the discussion of Flash SSD Power Failure Corruption Prevention, Recovery and Test 

Flash Memory Basics

NAND Flash memory is the base storage medium of the Solid State Drives. A Flash memory cell works on the principle that there is a distinguishable stored charge inside the cell which corresponds to either a programmed or erased condition. A peripheral circuitry can check the status of the cell (read) and determine which state the cell is in. The greater the difference between the erased and programmed condition the easier it’s to distinguish the cell state.

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Flash SSD Power Failure Corruption Prevention, Recovery and Test - Part 1

Posted by John Kuracek on Tuesday, 06 May 2014

Electronic systems are often vulnerable to power disruptions. Voltage spikes, brownouts, surges, blackouts and other power supply fluctuations destabilize system operation with typically unpredictable results. In general, once a power spike is detected, a system is reset to revert back to an expected and default condition.

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CompactFlash Write Protect Switch and Protection Zones - Benefits Gaming Customer

Posted by David Chen on Thursday, 01 May 2014

CompactFlash Card with Write Protect Switch

Recently a gaming OEM customer has contacted Fortasa to investigate and evaluate our CompactFlash card solution for their Video Poker Machine. What attracted this customer was the specific features we offered that were very beneficial to the application:

Write Protect Switch

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