Questions tagged [eeprom]

Acronym: Electrically Erasable, Programmable Read-Only Memory. Sometimes used with Flash parts that are similar to old EEPROM parts.

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Problem with writing eeprom memory

I am trying to write atmel at28c256 on breadboard so I tied all address lines to ground, and all I/O lines also tied to ground. I untie I/O lines for reading, tie 'WE to high, 'CE to low, and 'OE to ...
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778 views

Why is so8 test clip causing read errors with 93C56 eeprom (TL866 programmer)?

I am trying to read an Atmel 93C56B eeprom, so8 surface mount package, with this programmer. When using the so8 adapter in the zif socket it works perfectly. However when I use the test clip, it is ...
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3answers
65 views

DALI Commissioning reduction

Is there any way I can reduce the DALI commissioning? I have an Occupancy sensor, photo sensor and a switch which are DALI devices. So every time when I turn on the device it goes for commissioning ...
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41 views

How to program i2c eeprom by hand?

I have a 24c02 eeprom and I want to program it. But I don't have Arduino or any microcontroler. I saw a video about program eeprom by hand, but they are parallel eeprom. This is the link of that video:...
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152 views

Replacing SD card by using EEPROM

I am using the mbed platform and to be specific, NUCLEO L073RZ. To log data, I am using SDFileSystem.cpp that is officially supported by mbed (you can find the link ...
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144 views

Problems programming a 29GL256

I've been experimenting with Python scripts and using an Teensy 2.0 ++ to program different flash memories. So far I've found a script to program a 29GL128, which works perfectly, but I'm trying to ...
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103 views

EEPROM in Simulator for Microchip Pic18f

When programming a Microcontroller from Microchip using Pic18F and using XC8 Compiler, can i use Simulator to test / verify it ? ...
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432 views

PIC : EEPROM not write properly to 0xFF in PIC18F67K22 controller

I am writing values from 0x50 to 0x3ff in EEPROM of pic18f67k22. Whenever eeprom is getting full, I am writing 0xFF and then after write my data from 0x50 location. but some time eeprom is not write ...
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1answer
473 views

Why there are AC timing characteristics but not DC in I2C interfaced chip?

I'm quite newbie in electronics, and I'd like to learn why there are AC timing characteristics to this particular EEPROM (24LC512) that I'm using but none for DC? Does AC timing constraints apply to ...
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27 views

Proteus Atmel EEPROM Simulation

Can somebody confirm me if Labcenter Proteus can simulate the EEPROM registers for the Arduino Atmel megaAVR ATmega328P, for the standard instructions EEPROM.put ...
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52 views

Is normal SPI device compatible with SPI I/F?

Audio controller AK5374 that I use requires EEPROM with SPI. However, in the specs it is written, that it communicates with EEPROM via SPI I/F. Will normal EEPROM be compatible with this interface?
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Msp430 f5328 Eeprom data get erased when burn new firmware

Hi is there anyway I can do this? I need to have my serial number in eeprom. But the problem is my data has been erased when I burn new firmware. Is there anyway I can avoid this. Thanks
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97 views

STM32L0 Hangs on writing EEPROM

I've got an STM32L073RZ and I'm attempting to write a 4 byte value to the internal 6 KB EEPROM. I'm running MbedOS 5.11.4 but attempting to use the HAL for this. Here's the code: ...
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70 views

EEPROM and Flash testing

I am looking into the best practices for EEPROM and Flash memory testing. We are talking about end of line product testing by an ATE. The goal is to identify defect chip before writing memory content. ...
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53 views

eeprom endurance and life expectation

Imagine the following situation: 'considering that we have the environment of room temperature ..' EEPROM size: 512 byte. EEPROM endurance: 100,000 write cycles logging data: 4 bytes every 3 minutes. ...
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110 views

ENE KB9012 SPI protocol reflashing with parallel port

The story in short: I have a laptop which got bricked with a failed BIOS update, and it's ENE KB9012QF A3 KBC's embedded flash contents needs to be reflashed. Solutions I tried, but didn't work: ...
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54 views

Hacking an eight cell battery monitor

My goal is to monitor each cell voltage of a seven cell li-ion battery and send this to a Linux board, specifically the Jetson TX2, over i2c. There does not seem to be any off the shelf component that ...
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1answer
62 views

EEPROM 25LC1024 issue with PIC32MX OLIMEX board

I am trying to read the status register for the EEPROM following the instructions in this Application Note. I wanted to have the opinion of the community on the signals I am getting. They don't seem ...
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52 views

Ambiguous behavior while using 2 SPI's with relatively similar speeds STM32f030c8

I'm using RFID reader Rc522 communicating with the STM32f030c8 via SPI1 and EEPROM communicating via SPI2. System clock : 48 Mhz (via the Internal PLL system) APB peripheral clock which has the SPI's :...
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151 views

Microcontroller(Atmega16A) hangs in Stop method while communicating using I2C with Atmega16 and 24LC256

First of all let me say that I am a beginner in embedded programming. I am trying to do write/read using I2C protocol from 24LC256 EEPROM using Atmega16A. While debugging in Atmel Studio 7, I see I ...
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1answer
42 views

Power Fail Monitor and ADC measurement

In my AVR project, I need to measure input voltage (before buck converter), and check for power loss to quickly save some data to EEPROM. Measuring input voltage is just to display its value, but I ...
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2answers
138 views

Recording servo movements using pic with CCS C

Here what I am trying to do is control servo motor with a pottentiometer and record its movement using analog to digital converter and than play. I started with just moving the servo. To see which ...
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1answer
1k views

How to test flash memory

I'm using blackfin533, and I would like to write a software for flash memory testing. How would I test the flash memory ? I know how to test an eeprom but how would I test the flash memory of the ...