Questions tagged [non-volatile-memory]
Memory which maintains its value through power cycles.
152
questions
0
votes
0
answers
47
views
What is the memory address for 24AA16 EEPROM IC?
I am using 24AA16 EEPROM IC to read and write. But i don't know exactly the memory adddress to write something in this IC and also read from that. This is the datasheet for this IC,
https://ww1....
- 71
0
votes
0
answers
43
views
STM32F302xx Flash Location
recently I tried to flash my STM32F302CCT7 with a ST-link, openOCD, and gdb for arm. I am using the rust toolchain which requires that the ROM and RAM locations to be specified in a memory.x file when ...
0
votes
0
answers
56
views
What do NRAM cells look like?
Note: I don't have any electrical engineering experience, so I'd like to apologize for my bad vocabulary about this subject.
I'm currently exploring the memory world and stumbled across NRAM which got ...
- 101
0
votes
0
answers
47
views
External NOR Flash malfunctioning
External NOR Flash malfunctioning
Part used: ZD25WQ16CTIGT Zetta NOR Flash
We are using Zetta family 16MBit NOR Flash in a partitioned format. One partition is used as an emulated EEPROM, and another ...
1
vote
3
answers
314
views
How to implement a solid-state non-volatile switch?
I found this heavily downvoted question about how to implement a non-volatile switch (i.e. a switch that remembers its last state even when power is removed). While the OP asked the question in a ...
- 2,696
2
votes
0
answers
73
views
Is it safe to replace a 120ns Flash memory with a 90ns part?
Here is an old PLC board with a pair of AM29F200AB-120SI SOP-44 256kB 5V flash chips. One is unable to retain data, after nearly three decades in service.
These are very challenging to find today, ...
- 16.3k
1
vote
1
answer
195
views
NVRAM data is reset to 0 when using NVIC_SystemReset()
I am working on nRF52840 with Mbed5.15. Trying to persist data in NVRAM.
In the linker script nRF52840.ld I have something like this:
...
- 133
0
votes
1
answer
27
views
Why am I seeing erratic behavior by a variable stored in "information memory" on MSP430?
Sometimes a variable in information memory updates as expected and sometimes not.
For example, I would expect the following program to print...
0
0
1
...but, in ...
- 10.2k
0
votes
2
answers
267
views
Behaviour Variables stored in non volatile memory after RESET [closed]
I need to know if a variable stored in a non volatile memory, after a Power On Reset do this variable return to its default value, or it keeps the last valid value before the reset
6
votes
1
answer
551
views
eMMC data lines swapping
I'm routing an eMMC 5.1 device to a iMX6 microprocessor. When routing the DDR RAM, I've swapped several data lines to ease routing, following widely available documentation on the subject.
There isn't ...
- 200
8
votes
3
answers
1k
views
What are the "redundant bytes" added to every page of this NAND flash?
I was tinkering around some NAND flash memories and found out that some of them (not sure if it's all of them) have a few "redundant bytes" that are something of a mystery. (See related ...
- 2,017
-1
votes
1
answer
126
views
STM microcontroller: Is there a way to reset and reprogram read-only memory?
I have an STM32F427VIT6 embedded microcontroler. It has a protected-memory bootloader.
Is there a way to reset it and modify that bootloader?
- 109
0
votes
1
answer
121
views
Microcontroller, Flash EPROM and RAM combination questions
I have chosen a specific microcontroller (MCU) for a project, based on price, package size, and speed. It's the NXP LPC1768FBD100, a 100 MHz ARM-based MCU with 512 KB program memory and 64 KB SRAM.
My ...
- 308
1
vote
0
answers
156
views
Replacing CMOS SRAM with NV SRAM
I have an electronic board from a professional video device containing a 256K 8bit CMOS SRAM 28 pin DIP. I wish to replace this memory with a Nonvolatile 256K 8bit RAM 28 pin DIP, so that I can read ...
- 11
8
votes
3
answers
7k
views
How long can a micro SD card hold data without being powered? [closed]
I lost a micro SD card few years ego, and I'm worried that someone may find it and misuse the data stored in it.
How long can a micro SD card keeps the data without being powered, ignoring other ...
user285637