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

learn more… | top users | synonyms

0
votes
0answers
20 views

Array write/read with atmega 8 with help of USART

I have been stuck on a problem for a week, so I need to ask for help. I want to receive an array by USART and write that array in EEPROM(internal/external) and same read that value or array and ...
0
votes
1answer
40 views

Atmel SPI Serial EEPROM Writing Error - Page Write?

I'm using this EEPROM: Atmel AT25640B SPI EEPROM DATASHEET It seems pretty straight forward to operate and I've followed the datasheet closely when coding my driver. I seemed to have some success ...
-4
votes
0answers
38 views

How to change the device name of a bluetooth chip CSR8635 that appears on device search? [closed]

I came across a comment on youtube explaining the way of changing the name of a chip but it is just explained in general. Does anybody know in detail what should be done to change the name? The ...
0
votes
1answer
46 views

DIL IC for simple non-volatile memory [closed]

Can anyone suggest a DIL IC where I can store a couple bits of memory without having to use a complicated interface like serial, I2C, and etc. I want to be able to store at least 2 bits of memory to ...
0
votes
1answer
34 views

FreeDSP (ADAU1701) isn't working - what is the issue?

I had FreeDSP PCB soldered recently and for the last two days I've been struggling to make it work. FreeDSP basically consists of ADAU1701 DSP, 24LC256 EEPROM, 12 MHz oscillator, IO circuits and ...
0
votes
1answer
65 views

Microcontroller reset

I am facing a problem of micro controller reset, I am thinking of implementing the following to find the function in which it happens, then the root cause. As soon as I enter a function I will ...
4
votes
2answers
85 views

EEPROM reading and writing

It is known that there are limited read and write cycles for EEPROM. Suppose I keep writing some important information in EEPROM and read it after power off to ON. Suppose at some point of time the ...
-6
votes
3answers
59 views

What is the difference between a Micro-controller and a EEPROM? [closed]

What are the tasks Micro-controller are used in, compared to EEPROM? Also for a simple Arudino, is ATmega328 the micro-controller or EEPROM?
0
votes
0answers
28 views

Programmer to read and program a “x2816Ad”EEPROM

I have a x2816Ad EEPROM (datasheet). I would like to dump the data stored on it with a programmer. It is build in a Simatic S5 Memory Submodule "6ES5 375-0LC11". Since I did not find information on ...
0
votes
1answer
63 views

How to connect multiple AT28C256/AT93C256/AT24C256/24LC512 EEPROMS to have more space

I want to have more memory say 1 Mega Byte, But I don't know how to connect multiple EEPROMS either in series or parallel I would like to use either AT28.... or AT93.... or AT24.... series Also ...
0
votes
4answers
68 views

Best value to overwrite old to tell if memory is not used on eeprom

I have an EEPROM I want to store CRC32 hashes on between 0x0000 and 0x008C. In this range I need a way that I can erase one of the hashes and overwrite its bytes to a default number. By doing this I ...
0
votes
1answer
137 views

What is needed to store readable/writable data to flash/eeprom [closed]

I am wanting to add some readable/writeable memory to my ATmega8/attiny project where I can store data, recall the stored data, then overwrite the stored data. The stored data must be able to be ...
-1
votes
1answer
103 views

PIC C program flow problem XC8

Problem: My C code is not running to the end. To test my EEPROM read and write, I decided to write a simple array and read it back to different array using a PIC. However the problem is not the ...
1
vote
0answers
103 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 ...
3
votes
1answer
74 views

How are system configuration flash or eeprom chips programmed?

I've seen, quite often actually, a circuit that will have an eeprom or flash chip soldered next to the application chip. Take a look at the ESP8266, it has some kind of programmable memory that sets ...
0
votes
2answers
118 views

Reading image, sound, binary file from nonvolatile memory for FPGA

For applications that require design on FPGA which shall make use of several image files, sound files or other forms of files, can they be simply included in the FPGA design configuration file? In any ...
3
votes
3answers
96 views

Can probing an EEPROM with a multimeter corrupt the data?

Say there's an EEPROM on a board and you happen to try probing the pin one by one with a multimeter, is there a good chance that the sequence of probing the pins must have overwritten (thus corrupt) ...
1
vote
1answer
65 views

What is the purpose of SRAM in the DS1307 RTC chip and the onboard AT24C32N EEPROM chip??

I am going to interface a RTC to PIC18F and before doing so, I'd like to clear some doubts regarding the module and its connections. I am using the "Tiny RTC" as shown in this link!. The following ...
1
vote
1answer
104 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 ...
0
votes
1answer
82 views

Primary diff between EEPROM and Flash mem, in terms of code memory

In terms of storing program commands, what is the definable difference between EEPROM and Flash memory? Also, in this particular context - For a personal project developing audio codec using TI ...
1
vote
1answer
52 views

ATmega48PA power consumption during EEPROM write

PLEASE, PLEASE! My question is about power consumption of the CPU during EEPROM write NOT about the power supply! PLEASE! Thank you! I have a device (ATmega48PA) powered through a 150k resistor ...
0
votes
2answers
128 views

Is it possible to generate a functional EEPROM (with persistence) inside an FPGA/CPLD

I'm looking to implement a small persistent 'configuration space' parallel EEPROM within a design. However, given the volatile nature of FPGAs, this doesn't seem possible without some very clever ...
3
votes
1answer
67 views

How easy to indentify memory like ROM or EEPROM Flash Memory Areas of a Chip

Can anyone tell me would the memory circuit areas (ROM, EEPROM, SDRAM, Flash Memory) of the layers of a die belonging to a MCU and SoC IC's be relatively easy to identify compared to identify circuit ...
1
vote
2answers
85 views

Why fram instead of eeprom

Why do all the gameboy cartridge mods for nonvolatile save use a type of ram like fram? Why isn't a sufficiently fast eeprom or flash ic used? EDIT: We all know this is about parallel interface ICs, ...
-1
votes
1answer
131 views

disable write protection in eeprom

I'm working on pic24fj128ga202 microcontroller. My pic is interfaced with eeprom via I2C. I can't write and read on eeprom(BR24G256), then I read the datasheet of eeprom and came to know that there is ...
1
vote
0answers
151 views

Unknown SOT-23-5 I2C device

I have a small board that stores some static and dynamic data: cc 80bytes of serial number, manufacturing date and a counter. The board has two SOT-23-5 components: one is with CBOCX and one is with ...
0
votes
2answers
94 views

EEPROM writes/reads wrong bytes

I am using M95512-W M95512-RM95512-DF eeprom for storing my data. But sometimes it's not storing bytes I want. Instead of it, it's storing successive (wrong)bytes. ...
0
votes
3answers
167 views

Why use RAM IC over EEPROM IC?

I have been looking at various different external storage ICs that would work with an arduino. When I looked at the specs of some EEPROM chips and compared it to the specs of other RAM chips, I ...
0
votes
0answers
140 views

Problem in I2C writing operation

Im trying to write a letter('A') in A EEPROM via I2C using PIC24FJ64GA002 microcontroller. Im connecting only one eeprom(24c256) to my PIC, and its slave address is "0xA0". I've done according to the ...
0
votes
1answer
88 views

How to find which one is master/slave? - PIC

Im using PIC24FJ64GA002 microcontroller interfacing with EEPROM(24C256). EEPROM's SDA and SCL pins are connected with respective PIC24F I2C1's SDA and SCL. All other pins of eeprom are grounded. Here ...
0
votes
0answers
67 views

EEProm losing Data due to solder iron

I was working on a product which uses 24c04 EEProm, and we had frequent problem of the same EEProm part no. losing Calibration data on other products. Now we thought that the problem was reset IC ...
1
vote
2answers
449 views

PIC32 and I2C EEPROM interface problems

I am writing code for a PIC32MX250F128B to interface with the Microchip 24LC02B EEPROM with I2C interface. I have followed the datasheet of the EEPROM, the PIC32 and section 24 of the PIC32 family ...
1
vote
1answer
113 views

Check content of EEPROM during run-time like Visual Studio

In Visual Studio, when we try to read memory location, we add breakpoints and run step by step to see what is getting read or written to a memory location. Is there a similar way, we can do it in ...
0
votes
1answer
131 views

EEPROM 93C66 dummy bit problem?

Could someone please explain the reason why the 93C66 EEPROM outputs a dummy 0 during a read operation? From datasheet: 5.1 Read Data from Memory The Read Data from Memory (READ) ...
6
votes
4answers
468 views

Why do most of the non-volatile memories have logical 1 as the default state?

I have used non volatile memory, like EEPROM and FLASH memory, in embedded applications and I have always found that unused memory (EEPROM/FLASH) bit locations are always set to ...
-1
votes
1answer
170 views
1
vote
3answers
386 views

Breaking a 16-bit long int to write into eeprom?

I am writing data to eeprom AT24C16 using PIC microcontroller pic18f4520. Every address of this eeprom can hold 8-bits while I am using long int's to store data that are 16-bit in size. How to break ...
11
votes
2answers
511 views

Inbuilt flash memory size not enough

I am using TM4C1230C3PMI controller from Texas instrument in one of my project. It has 32KB of internal flash, which is not sufficient for my application. Higher flash sized micro-controller are ...
4
votes
1answer
148 views

Number of address in AT24C16 EEPROM or is it duplicate?

I am working on EEPROM AT24C16 for a particular project. According to the datasheet it must have 2048 addresses and I should be able to write 1024 unsigned int into it [ 1 unsigned int per 2 ...
16
votes
7answers
2k views

Why is serial EEPROM preferred over parallel EEPROM?

In the wikipedia page for EEPROM: http://en.wikipedia.org/wiki/EEPROM it is given that "Parallel EEPROM devices typically have an 8-bit data bus and an address bus wide enough to cover the complete ...
1
vote
2answers
85 views

I2C EEPROM endurance

I am using an AT24C32 I2C EEPROM device as a simple storage unit for recording slow analog voltages. I am writing the data byte-wise, no pages. Every write cycle takes 10ms to complete. The data ...
2
votes
2answers
351 views

#define EEMEM __attribute__((section('.eeprom')))

After long time investigation, I could not find proper information about "#define EEMEM attribute((section('.eeprom')))" macro on eeprom.h header file. I want to declare variable exactly at address ...
1
vote
1answer
499 views

Help identifying this chip (EEPROM?)

I have a circuit board from a Stratasys UPrint SE filament cartridge, and I'm trying to talk to the EEPROM on it. This board is unlike other Stratasys boards that I've seen people hacking with, and ...
0
votes
1answer
156 views

Will the PIC18F14K50 perform well as a CNC machine micro-processor?

The data sheet can be found here. I'm trying to select a micro-controller which will eventually run a Wireless 2D Laser Engraver/3D Printer/CNC Machine. I have very little experience in selecting ...
1
vote
4answers
294 views

ATmega328p and USB conection to PC

I posted the same question on StackOverflow and I was redirected here. For my project I need to be able to program the eeprom of an Atmega 328p via an USB to PC. I tried to incorporate an USBasp ...
2
votes
2answers
178 views

Is the ROM of an MCU NAND FLASH ?

I understand binary code is stored in the ROM area of an MCU. Typically most MCUs have FLASH EEPROMS. Is this really the NAND type FLASH storage we find in most SSDs? If not, what are the ...
4
votes
2answers
1k views

Flash and EEPROM

Atmega16 datasheet says that it has a) 16 Kbytes of In-System Self-programmable Flash program memory and b) 512 Bytes EEPROM. Can a microcontoller have two separate ROMs which can be programmed ...
3
votes
1answer
109 views

Understanding scrolling display circuit

I have this outline of a circuit designed to display a scrolling message. I'm having some trouble understanding how it's supposed to work, so I'm just going to explain what I think I know and go ...
2
votes
1answer
689 views

PIC EEPROM after re-programming

I was trying to get my EEPROM read/write working on my PIC. I first programmed a write cycle, and then reprogrammed it to read it out. (To avoid writing every time I start the program/pic) But I ...
0
votes
3answers
94 views

EEPROM Microcontroller

It is just a general question. I have designed some micro controller boards with On-Board EEPROM. This EEPROM is to store some configuration parameters for program like calibration data and system ...