Questions tagged [non-volatile-memory]

Memory which maintains it's value through power cycles.

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STM32 Flash acting like RAM

I've been trying to program a word of flash memory on my STM32F030F4, but for some reason whenever I power it off and on again, the memory location has defaulted to '0xFFFFFFFF' again. Am I missing ...
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300 views

alternative to NAND chips

The company I work for is manufacturing a device with ARM processor and embedded Linux. At the time of the project (a few years ago) our consultants relied on NAND flash chips with UBIFS as filesystem,...
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Initial data values of FRAM devices

I've got an FM25L16 FRAM part in a board design. For a new part from the manufacturer, what are the initial data values? All 0x00, or all ...
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123 views

Handling Large Variable Data with a Microcontroller

What is good practice for storing and manipulating variable data in a microcontroller circuit when the data may exceed microcontroller working memory? In my application, I am designing an access ...
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W25q64 Nor flash does not get Erased

I am trying to write the data into the NOR flash but for some reason it is taking some random/garbage data . First i tried to erase the sector then i read the data from the same location which i have ...
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Can FOTA be performed by changing the execution point of the code i.e, changing the program counter in lpc1759

For FOTA can we divide the memory into two blocks, eg : block A and block B. And whenever there is a new version of firmware detected, we shall change the execution point of the code. Is this ...
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How to determine SPI memory IC compaibility

I'm designing a PCB that includes an ISD3900 for voice recording and playback, for a personal project. This particular device requires an SPI flash memory IC to accompany it. The design guide states ...
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What happens when the chip enable active time limit is exceeded?

The datasheet of a FRAM chip (FM1608-120-P) says that "the device has a maximum /CE low time specification that must be satisfied". The datasheet does not state what the consequences are when this ...
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104 views

How can I design a Caesar cipher encrypter and decrypter without using Non-programmable circuit components?

My device should be able to take an input from A-Z and another input to from 0-25 and finally a Encrypt or Decrypt option. Currently I have given A a code of 0000, B 0001... so on and the output will ...