Xicor X28HC256 EEPROM

Started by Karl-Heinz in comp.arch.embedded14 years ago 7 replies

Hi, can anybody tell me where to find more internal information about the Xicor X28HC256 EEPROM than in the normal product data sheet? I'm...

Hi, can anybody tell me where to find more internal information about the Xicor X28HC256 EEPROM than in the normal product data sheet? I'm especially interested in the page write operation. Is there an internal RAM in this EEPROM which stores the incoming data until the page write operation starts? If this is true, does the page write cycle write the data bytes starting from higher address...


Please give solution there is problem while interfacing AT25010A(serial EEPROM) with LPC 2103

Started by penchaljammula in comp.arch.embedded11 years ago

Helloo, I'm interfacing LPC2103(SPI0) with Serial EEPROM AT25010A to write data in to the EEPROM I have to sent 2...

Helloo, I'm interfacing LPC2103(SPI0) with Serial EEPROM AT25010A to write data in to the EEPROM I have to sent 2 COmmands WREN(0x06),WRITE(0x02),Address(Let 0x00) and data(let 0x41) i'm using Keil debugger. While i'm writing S0SPDR register(with out interfacing AT 25010A) with these commands the register S0SPDR shows the value and data is on the Mosi pin but whenever i interface with AT2501...


Help new bie in TMS320LF2407A DSP programming

Started by nasi...@gmail.com in comp.arch.embedded12 years ago 1 reply

Hello ALL I am new DSP programming & Code composer. I have to build a windows application which communicates with TI DSP by RS 232 PORT. TI DSP...

Hello ALL I am new DSP programming & Code composer. I have to build a windows application which communicates with TI DSP by RS 232 PORT. TI DSP is connected with a EEPROM 25LC050 through SPI. Windows application sends data to DSP and ask it to save some data to EEPROM. Windows application can also ask DSP to retrive data from EEPROM. Also I have to code for TI DSP(model TMS 320LF2407A) th...


6802 - RS232

Started by Anonymous in comp.arch.embedded13 years ago 9 replies

hi everyone, I am working on a project which has a 6802 processor and standard ram and eeprom (not decided which bands yet). I wonder If I...

hi everyone, I am working on a project which has a 6802 processor and standard ram and eeprom (not decided which bands yet). I wonder If I can write sofware for 6802 in PC and can send it with rs232 port to eeprom.


FPGA, GAL, CPDL.. ?

Started by DaveC in comp.arch.embedded15 years ago 3 replies

Ok, yes this is school work, but I'm handing tomorrow and I'm beyond doing any more work on it. So it does not matter any more but the problem...

Ok, yes this is school work, but I'm handing tomorrow and I'm beyond doing any more work on it. So it does not matter any more but the problem is still bugging me. We were given a logic problem, we were only asked to use standard HC HCT Gates (NAND's NOR's Inverters). I also did a EEPROM solution, it's a five input one output function so the EEPROM was programmed with all 32 possible...


Anyone seen ATMega8515 lose eeprom data?

Started by Mike Harrison in comp.arch.embedded15 years ago 1 reply

A customer of mine recently changed from using AT90S8515 to ATMega8515 as the former is obsolete. We've had a couple of units in the field lose...

A customer of mine recently changed from using AT90S8515 to ATMega8515 as the former is obsolete. We've had a couple of units in the field lose eeprom data - we're still waiting to get them back to look further but has anyone else seen anything like this ?


H8SX/1721 MCU - reading/writing eeprom

Started by Who in comp.arch.embedded8 years ago 1 reply

Hello, I have couple of those MCU's that I would like to read and program... Is there any cheap programmer that handle those ? Jtag maybe and...

Hello, I have couple of those MCU's that I would like to read and program... Is there any cheap programmer that handle those ? Jtag maybe and some application that can read/write eeprom on this mcu ? I know that there is P&E Microcomputer Systems - Cyclone for Renesas But this price for a hobbyist is to expensive. Thank's for all the help. -------------------------------...


Q: Best Microcontroller for this job

Started by --|-- in comp.arch.embedded16 years ago 5 replies

Hello i was looking at using a atmel 8515 or a pic (not sure which variant yet) for a project. The microcontroller will be connected to a...

Hello i was looking at using a atmel 8515 or a pic (not sure which variant yet) for a project. The microcontroller will be connected to a max186 for analog aquisitions which will be stored in an eeprom, also looking at a keypad ,lcd,x10 and serial pc interface to configure the unit and download data from the eeprom.. one of my concerns on the 8515 is the price @10$ but i can use gcc, i ...


Continous eeprom checksum microcontroller

Started by Vishal in comp.arch.embedded15 years ago 61 replies

Hi, Anybody come across continous background checksum tests on eeprom?? Is it worth doing ??

Hi, Anybody come across continous background checksum tests on eeprom?? Is it worth doing ??


parallel eeproms and 8051

Started by funkymunky in comp.arch.embedded15 years ago 5 replies

Hi.. Im new to embedded systems, iv started with the 89c51 uC. Ive never used a parallel eeprom with the 89c51, thought iv used a serial...

Hi.. Im new to embedded systems, iv started with the 89c51 uC. Ive never used a parallel eeprom with the 89c51, thought iv used a serial one with the i2c protocol (and had a tough time in getting the thing to work, using sdcc :-( ). My question is..can only a parallel eeprom be used to extend the RAM?? seems logical, or else how would the uC generate the address on its own?? Also, ca...


Strange EEPROM related issue

Started by cerr in comp.arch.embedded8 years ago 5 replies

Hi,=20 We have a fully functional system but saw twice so far (in 100+ samples) th= at the values in the EEPROM sometimes seem to be messed...

Hi,=20 We have a fully functional system but saw twice so far (in 100+ samples) th= at the values in the EEPROM sometimes seem to be messed up. We suspect that= this is happening after powering on & powering off the system a few times = repeatedly but have been unable to reproduce the issue so far. Does anyone = have a clue what this might be? Would it be safer to store the data in Flas= ...


Writing a serial number to EEPROM...

Started by Donner in comp.arch.embedded14 years ago 4 replies

Hi! I'm trying to write a serial number to a Cypress FX2 EEPROM. I have used the hex2bix method, and it worked great. But my new method...

Hi! I'm trying to write a serial number to a Cypress FX2 EEPROM. I have used the hex2bix method, and it worked great. But my new method is to edit the binary file from the hex2bix, alter the serial number, and upload the new binary file to the FX2 EEPROM. I can find the serial number okay, and can alter it. But when writing to the USB device, nothing seems to happen. I have to re...


Cant get eeprom emulation to work on mc9s12C32

Started by seegoon in comp.arch.embedded13 years ago

Hi to all. I can't seem to get the eeprom emulation on a mc9s12C32 to work. I have the App note AN2303/D and associated files from Freescale...

Hi to all. I can't seem to get the eeprom emulation on a mc9s12C32 to work. I have the App note AN2303/D and associated files from Freescale website , but I am still struggling. I am new to this processor and have never done anything like this before , so excuse me if I am being a bit of a "dumbo" :0( I have created a basic project using the "Processor Expert" function. Xtal freq is 1...


MCC18 / PIC C18 - how to write to internal EEPROM?

Started by Royston Vasey in comp.arch.embedded10 years ago 3 replies

I'm new to C and am trying to write a byte to the internal EEPROM in a 18F45k20. I've done this in the past using assembly but now I'm...

I'm new to C and am trying to write a byte to the internal EEPROM in a 18F45k20. I've done this in the past using assembly but now I'm working in C I figure there should be a function for doing this. I've found reference to write_b_eep and read_b_eep on the net but cannot see any reference to these in the MPLAB C18 Compiler Libraries documentation. What is the way to approach this? ...


looking for large serial eeprom on DIP8 chip

Started by senseitg in comp.arch.embedded13 years ago 6 replies

I need to find a serial eeprom/flash chip with at least 2Mbit memory. Preferably I2C but any serial 3/2 wire system is OK as long as it can be run...

I need to find a serial eeprom/flash chip with at least 2Mbit memory. Preferably I2C but any serial 3/2 wire system is OK as long as it can be run on low speed (~100khz). I have found several memories but all of them are surface mount models, and I need a DIP8. Small quantity order. Any ideas? Thanks!


AVR EEPROM Endurance

Started by Greg Schaefer in comp.arch.embedded16 years ago 8 replies

I was wondering if anyone has experience with EEPROM endurence on Atmel AVR parts. I have a controller project that requires a real-time...

I was wondering if anyone has experience with EEPROM endurence on Atmel AVR parts. I have a controller project that requires a real-time clock that I originally planned to implement via a DS1320+supercap. However, I recently found a prebuilt board that does 90% of what I want but does not include a battery/cap backup RTC. I can use one of the AVR timers to generate an accurate clock while i...


what's shift clock

Started by leilei in comp.arch.embedded11 years ago 6 replies

hi, when i read rtl8139 driver's source, there's a macro like this: #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ the comment say it is a...

hi, when i read rtl8139 driver's source, there's a macro like this: #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ the comment say it is a eeprom shift clock. can any one tell me what is shift clock.and what it is used to do?


Font compression and decompression

Started by terry in comp.arch.embedded15 years ago 8 replies

Hi, I want to store 16x16 font image in EEProm. My MCU Rom size is 512. So the total number of fonts stored is 512*8/16/16=16. Do anyone know...

Hi, I want to store 16x16 font image in EEProm. My MCU Rom size is 512. So the total number of fonts stored is 512*8/16/16=16. Do anyone know if there exist font compression algorithm in the world which can compress one font in the eeprom so that I can get more fonts. Thanks!


Erasing Flash EEPROM Sector

Started by Thomas in comp.arch.embedded15 years ago 1 reply

Hi there, I've got a little question. Im using the BM29F400 Flash Memory EEPROM by BRIGHT Microelectronics Inc with a C164CI microcontroller...

Hi there, I've got a little question. Im using the BM29F400 Flash Memory EEPROM by BRIGHT Microelectronics Inc with a C164CI microcontroller (Infineon). After the command sequence for erasing a sector the following code is executed: check_erase: MOV R3,[R2] AND R3,#0080H CMP R3,#0080H JMPR CC_NZ,check_erase...


right micro for data acq

Started by Anonymous in comp.arch.embedded14 years ago 1 reply

Hi, i am looking for a micro basically for data acquistion. I need two 8 bit pulse accumulators, 3 a2d channels and 128 KB of Non Volatile...

Hi, i am looking for a micro basically for data acquistion. I need two 8 bit pulse accumulators, 3 a2d channels and 128 KB of Non Volatile Memory ( preferably EEPROM). The code size will too small.(say 2KB) i was thinking of using a PIC micro with SPI to connect with an external EEPROM. Let me know if there are any micros for such applications. ( I basically want to do away with external...