Questions tagged [non-volatile-memory]

Memory which maintains it's value through power cycles.

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What is the Global Descriptor Table memory type?

What type of memory type is used for the Global Descriptor Table in an Intel Core 2 CPU? Is it just EEPROM or does the CPU normally use another type of NVRAM?
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2answers
274 views

High capacity flash memory

I'm trying to find a suitable high capacity (4-16GB) memory for an embedded application. Clearly this is going to be some kind of NAND flash memory. I need to be able to write to it at at least 16....
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2answers
5k views

Differences, uses, and theory of volatile and nonvolatile memory?

I understand the basics of volatile and nonvolatile memory. Volatile memory requires a constant power supply to retain data whereas non-volatile memory does not require a constant power supply to ...
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1answer
2k views

How data 0xFF is stored in Flash memory?

Hi i am using SST25VF032B flash memory. Before writing ,it has to be erased to 0xFF. But my doubt is that how it stores real 0xFF. Will is store 0xFF or some other value?
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7answers
16k views

I2C slave address not acknowledged (sometimes)

I'm trying to communicate with a remotely connected FRAM (FM24C04 from Ramtron) by using I2C. This memory is embedded on a board that can be inserted and removed at any time to/from the system (...
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1answer
912 views

Some general NAND flash questions

I have some questions about nand memories. Do we need to erase whole block to rewrite only one page? If true, what is the algorithm? Cache whole block > edit one page > erase whole block > write ...
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1answer
68 views

NVSRAM - Storage Capacitor Selection

I was reading this document from cypress website on Various storage capacitor options for nvSRAM. In page 2 , under the heading 'key characteristics' (see link below), I came across various values for ...
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1answer
827 views

About leakage current, standby current and current budgeting

Am using ST microelectronics NAND Flash device NAND01GW3A0AN6E. In this datasheet under Dc characteristics table they specified leakage current,standby current,operating current parameters. What is ...
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7answers
3k views

Alternatives to using EEPROM

As I understand it, EEPROM is a part of a computer (in my case, an AVR microcontroller) which stores data, and holds on to it even when the device completely shuts down. It allows data to be written ...
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4answers
12k views

What's the catch with FRAM?

After recently acquiring an MSP430 Launchpad I've been playing with various microcontroller projects. Unfortunately, the MSP430G2553 only has 512 bytes of RAM, so doing anything complex requires ...
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1answer
412 views

How to erase stored data in MRAM memory devices

When searching in Google about MRAM I was only able to find the reading and writing process for MRAM. How does erasing happen in MRAM? Also why there is no need of error correction and checking ...
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3answers
2k views

Serial NOR Flash - Vague

What are the structural differences between Serial NOR Flash and Parallel NOR Flash? If there is a structural difference , then What are the differences between Serial NOR Flash and Serial NAND Flash? ...
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2answers
5k views

How to store audio data for AVR project?

I see a lot of projects for AVR-based audio players that use an SD card to store the audio data. In fact, I am currently doing the very same thing on an Arduino and its Wave Shield, which has an SD ...
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2answers
714 views

Flash memory slower than magnetic disk [closed]

If flash memory is slower than magnetic disk, how can SSDs be faster than magnetic HDDs? Flash memory (such as USB thumb drives) is a specific type of EEPROM, used for small portable disk drives. ...
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2answers
193 views

Non-Volatile Serial Memory Chip

I need a non-voltile serial memory chip that I can clock random bits(about 500 bits) into one at a time by hand using toggle switch to clock them in . This stored bitstream is then clocked out at 20K ...
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2answers
339 views

What is the exact industry-standard programming protocol used for writing bits to a Flash memory device? [closed]

I have come across a Program & Verify technique. But I am unsure if that's how data is written to Flash memories in practice. I need a detailed specific protocol, preferably with the relevant ...
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5answers
2k views

Frequent Write to Non-volatile Memory

I am designing a device that automatically adjusts it's physical position as temperature changes. If the device it shut off or power is disconnected the device needs to remember it's last temperature ...

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