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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604 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) ...
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1answer
589 views

Reading 68HC05 Eeprom

I want to know if there is any way to read Eeprom from an 68HC05 with an Arduino. I've been reading other SPI and I2C EEPROM's. Thanks for your help and have a nice night. Sorry for my bad English if ...
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244 views

Combine two 8bit EEPROM to make 16bit EEPROM

I am working on building a computer out of logic chips. I want to use an EEPROM as the instruction memory. However, my EEPROM's only has 8bits data output, but I want my instructions to be 16bits long....
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59 views

Designing a Carry lookahead unit using EEPROMs, creates osclillator

I have read something about CLUs (Carry lookahead units) and want to build one. I have settled on design using eeproms as adders ...
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2answers
80 views

Are there any Programmable ROMs, that don't need specialist hardware to program [closed]

I have an idea for a digital circuit. It needs a ROM, one that I can use on bread board. I have no programming hardware (I have RS232 serial, I²C, I may at a stretch be able to get hold of an Arduino ...
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1answer
271 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 ...
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2answers
194 views

Can I program a microcontroller by manually programming an EEPROM and then coyping the EEPROM contents to the microcontroller? [closed]

If so , what do I need to learn in order to do that? I know it is possible to manually program an EEPROM. But What I want to know is how I can transfer the date stored in a eeprom to the ...
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1answer
564 views

Where to find PIC library functions? [closed]

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2answers
161 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 ...
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1answer
233 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 ...
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1answer
50 views

EEPROM converted to DRAM?

Can we use a EEPROM cell for DRAM ? simulate this circuit – Schematic created using CircuitLab This is an EEPROM cell. Can we use multiple cells of this type to create a DRAM?
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1answer
152 views

How does information gets stored into EEPROM?

How does information gets physically written to an Arduino Uno EEPROM ? Is each bit of information in fact a small condensator which fills and retains its charge even when the Arduino is powered down ?...
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1answer
1k 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 ...
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1answer
422 views

How to communicate with parallel eeprom with pic18f?

How to read eeprom M27C64A with pic18f4520, should i enable and disable the chip enable as well as output enable inside the loop while increasing the address? Can someone suggest me some code or ...
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1answer
731 views

Why dummy Write in I2C Read operation? [closed]

Why do you need to write nothing to an I2C component before reading from it? In a AT24C128C, for example: A Random Read requires a dummy byte write sequence to load in the data word address. I am ...
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1answer
29 views

How can i find the AT24C256 reg_addr?

For i2c to eeprom (at24c256) how can I find the device address and register address? ...
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1answer
88 views

Increasing Address Lines [closed]

I have stumbled into a problem where I need more address lines in my eeprom, my eeprom only has 15 address lines and I need atleast 28 address line for my project. What would you suggest I do? I need ...
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1answer
90 views

Why do I need to read/write from/to EEPROM in embedded applications? [closed]

What is the usage of the EEPROM in embedded application? can you give me examples?
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2answers
161 views

nxp microprocessor ethernet socket coding and sending code [closed]

I have nxp lpc43s50 microprocessor and I made an ethernet connection via lan8710 and at24c02 .I know how to connect at24c02 to my microprocessor pins .However I don't know how to send codes to my ...
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3answers
521 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?

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