Hi All, I support a product that's been manufactured with a bug in the flash memory of the microcontroller. The factory has come up with a...

Hi All, I support a product that's been manufactured with a bug in the flash memory of the microcontroller. The factory has come up with a solution and the design allows the update to be loaded via the products RS232 connector, so this part is simple. When the update is done I need to go into the adjustment menu and manually edit 116 different locations in the EEPROM according to a table...

I have a commercial webcam based on EZUSB - FX2. I still want to use the camera, so i don't want to make any changes (like disconnecting...

I have a commercial webcam based on EZUSB - FX2. I still want to use the camera, so i don't want to make any changes (like disconnecting the seeprom). I hoped that using the vendor command A0 i could bypass the "C2" SEEPROM. I'm able to upload my code and have it running. It seems that after i take the cpu out of the reset i cannot disconnect and reconnect the device by "bmDISCON". That is, t...

I'm pushing along trying to learn some C using MCC18. Can someone please tell me what the "&" before the variable "variable" does or means in...

I'm pushing along trying to learn some C using MCC18. Can someone please tell me what the "&" before the variable "variable" does or means in the code below? I'm finding it hard to find basic info like this in the documentation I've found. Is it AND? AND with what? thanks ee_read_byte(0x00, &cal_var); //initialise calibration variable from eeprom why the "&" -----------...

Hi I want to integrate a serial ROM with my 89C52. I came across some really large program that has to be fed ito the EEPROM of the 89C52 for...

Hi I want to integrate a serial ROM with my 89C52. I came across some really large program that has to be fed ito the EEPROM of the 89C52 for it to be able to access the 2404. Is it simple to interface this chip with a microC and is it worth while. (I need to store some values after power down) Thanks Ali

I have a product that utilizes a Z86E40 in the PLCC package. It's an OTP part. It's getting progressively harder to find. I am running out of...

I have a product that utilizes a Z86E40 in the PLCC package. It's an OTP part. It's getting progressively harder to find. I am running out of the windowed DIPs which are used for development. I am curious if there is a pin compatible replacement part with EEPROM or FLASH memory. It would be ideal if it had the same instruction set but that's not necessary. -----------------------------...

Hello, I just received a Triboard for the Infineon TC1766 Tricore microcontroller. I am trying to setup the SPI comunication with the eeprom...

Hello, I just received a Triboard for the Infineon TC1766 Tricore microcontroller. I am trying to setup the SPI comunication with the eeprom on the board, however there are no examples on how to configure the micro. Would anyone know where I can get an example of SPI implementation for the Tricore?? I would appreciate annyy help!!!! Thanks!!

So I was looking through the DigiKey catalog to see how large a serial EEPROM I could get, and found the Microchop 25LC1024, a 128K by 8. I try...

So I was looking through the DigiKey catalog to see how large a serial EEPROM I could get, and found the Microchop 25LC1024, a 128K by 8. I try to order one and was told "August". ??? Damn! So then I try the similar Atmel part, with no luck, then the 32K by 8 chip from both manufacturers too. So who is sucking up all these parts? Or has DigiKey just jumped the gun putting them in their ...

We have an 87c51 system which uses a 93C06 EEPROM to hold configuration data. The units operate 7/24 and on average lost their data every...

We have an 87c51 system which uses a 93C06 EEPROM to hold configuration data. The units operate 7/24 and on average lost their data every few months. Sometimes ( if not always ) they erase to 0ffh's. I cannot find anything wrong with the micro code. Has anyone experience hardware errors with these devices? Thanks, Arthur

Hello, I have been working on getting my RTL8019AS based board to remember what MAC address I was giving it before I realized that...

Hello, I have been working on getting my RTL8019AS based board to remember what MAC address I was giving it before I realized that the 8019AS does not have internal PROM and I would be forced to use an external EEPROM just to store the MAC. I have been reading the RTL8019AS data sheet along with the corresponding 'software developer's guide' and I am a little confused on how to program...

HI, is there anything like universal programmer where it is possible to program the Flash and EEPROM of different...

HI, is there anything like universal programmer where it is possible to program the Flash and EEPROM of different microcontrollers. reagards, jis

I am doing a project with ATmega8515. But the MCU's internal Flash memor is not enough for the firmware and I need to add an external memory...

I am doing a project with ATmega8515. But the MCU's internal Flash memor is not enough for the firmware and I need to add an external memory chip. What is the recommended EEPROM should I use in this case ? Any help could be highly appreciated ! N.L.Trung This message was sent using the comp.arch.embedded web interface o www.EmbeddedRelated.com

I don't know where to post this question, maybe here someone has faced the same problem in the past and could give me some good ideas. I...

I don't know where to post this question, maybe here someone has faced the same problem in the past and could give me some good ideas. I have to ship products with a different 32-bits serial number saved in a non-volatile memory (actually it's the internal EEPROM of AVR microcontrollers). Of course, I have to be sure to avoid two identical numbers in different devices. I was thinkin...

hi, Are there some good example projects for the IAR PIC micro 16/17 environment for I2C, LCD, simple I/O, EEprom access and...

hi, Are there some good example projects for the IAR PIC micro 16/17 environment for I2C, LCD, simple I/O, EEprom access and interrupt routines? I have source code from a C2C and a CCS but i don't find the right way to acces the same things with a IAR. Thx in Advance, Timothy

I've been working on a project that involved testing a toy with a simple processor in it, that controlled how the toy reacted when the user did...

I've been working on a project that involved testing a toy with a simple processor in it, that controlled how the toy reacted when the user did things. All of which got me interested in how the thing works at a hardware level - something in which I have no experience at all. I would like to learn more. I have around me a Windows PC, a Linux PC, an EEPROM 'memory programmer', some basi...

I was looking at the Atmel AT91R40008 for a new design. However I realised it dosen't support I2C. Does anyone have a recommendation about...

I was looking at the Atmel AT91R40008 for a new design. However I realised it dosen't support I2C. Does anyone have a recommendation about how to interface a real time clock, and maybe a serial eeprom. Is an I2C bus master a sensible approach, perhaps from Philips? The main objectives are low cost and good availbility. regards, Johnny.

I'm having trouble with an EEPROM and an LCD module hooked to an AT91SAM7S256. Software is using the at91lib TWI_* routines that came with an...

I'm having trouble with an EEPROM and an LCD module hooked to an AT91SAM7S256. Software is using the at91lib TWI_* routines that came with an evaluation kit. The program seems to be hanging up on incomplete I/O with the LCD module, but I don't know why. Analyzing the TWI (aka I2C) protocol would either nail the problem or assure me that there was nothing to see there. Where could I...

Hi, I would like some places to start to get the easiest program programmed into an AM29C020 EEprom to boot a single board computer. I...

Hi, I would like some places to start to get the easiest program programmed into an AM29C020 EEprom to boot a single board computer. I imagine seeing DOS or Linux booting up to say "Hello, World". First I just want to see this thing boot to something else instead of the WinCE that it boots to. After that I can try to figure out how to program them myself with some other programs. ...

Hi, Which is the cheapest MCU that you know of, with (Flash) AND (CANbus) AND (10-bit ADC) AND (EEPROM OR I2C)? Is there any web page with...

Hi, Which is the cheapest MCU that you know of, with (Flash) AND (CANbus) AND (10-bit ADC) AND (EEPROM OR I2C)? Is there any web page with a database where I can look for an MCU with a certain set of characteristics? It should cover as many manufacturers as possible. Thanks in advance,

Hi I would like to ask a question because i would like to make sure before i try. I currently using a AVRISP programmer from Atmel which uses...

Hi I would like to ask a question because i would like to make sure before i try. I currently using a AVRISP programmer from Atmel which uses the SPI to program the AVR. And i want to also use the SPI for communication with a SD Card. I am wondering if there could be an issue. Because one of my friends that have the same programmer was using the programmer and EEPROM through the SPI and so...

Here's a warning that may hopefully save someone else all the hassle we've just had after migrating a product to the Mega8515 - there may be a...

Here's a warning that may hopefully save someone else all the hassle we've just had after migrating a product to the Mega8515 - there may be a similar issue with other back-compatible mega parts.. We had some code that was originally written for a 90S4414. This moved to a 90S8515 a while ago when the 4414 went obsolete. We recently changed to the AtMega8515, again due to the old part going o...