Default value in EEPROM 24XX series

Started by diptipanchal in MSP4309 years ago 6 replies

We are using 24XX series EEPROM of microchip make. I have read the data from the EEPROM (without writing data to EEPROM), it always give as...

We are using 24XX series EEPROM of microchip make. I have read the data from the EEPROM (without writing data to EEPROM), it always give as 0xFF. Atleast i have checked in 5 EEPROM. In the datasheet, it is not mentioned what should be the default value? Could anyone let me know what should be the default value in EEPROM. - Dipti -- ------------------------------------


Re: msp430 EEPROM

Started by Rachel Adamec in MSP43012 years ago

>From: sharf lader >Subject: [msp430] msp430 EEPROM >hello all; >how could it be dealt with EEPROM if I would like to >read from or write to...

>From: sharf lader >Subject: [msp430] msp430 EEPROM >hello all; >how could it be dealt with EEPROM if I would like to >read from or write to EEPROM in msp430 mcu. Sharf, I am not sure if I understand you fully. I think you are asking how to interface to the FLASH memory that is on the MSP430Fxxxx chips. You may be asking how to interface to an ex


I2C EEPROM question

Started by matthewbuza1 in MSP43011 years ago

Hey guys, I haven't posted in a long time. I program in assembler and use the 430f1612. I've never used the I2C, all UART interaction for...

Hey guys, I haven't posted in a long time. I program in assembler and use the 430f1612. I've never used the I2C, all UART interaction for serial communication. I'm working on integrating my 1612 with a TUSB3410. I'm a green newbie when it comes to USB and i2c. My question is regarding the EEPROM. Im using a CAT24FC16 EEPROM. I've been able to write all TUSB3410 code to the EEPROM. I...


Help reg. xternal EEPROM

Started by deepak in MSP43014 years ago 14 replies

Hi, I am looking for a 16 bit flash mcu with JTAG support and an eeprom for non volatile data. I want to now whether an external EEPROM...

Hi, I am looking for a 16 bit flash mcu with JTAG support and an eeprom for non volatile data. I want to now whether an external EEPROM can be interfaced with MSP430f149. Please help regards Deepak Kukreja


MSP430 SPI to EEPROM

Started by blas...@hotmail.com in MSP4307 years ago

Hello, I'm currently trying to interface my MSP430F248 with a CAT25256 EEPROM. Right now I'm attempting set the WEL (Write enable) bit on the...

Hello, I'm currently trying to interface my MSP430F248 with a CAT25256 EEPROM. Right now I'm attempting set the WEL (Write enable) bit on the EEPROM by sending the appropriate command. I load the command onto UCA0TXBUF and set the CS bit to start the transfer. According to the EEPROM datasheet, the MISO pin should be at high impedance while WEL is being set. I'm assuming since I'm not receivin...


I2C - EEPROM repeated start problem

Started by embedded2k in MSP4308 years ago 12 replies

I have an EEPROM chipset (AT24C1024B) interfaced with MSP430F248 through I2C UCB1 module. I'm able to write data to EEPROM but I'm not able to...

I have an EEPROM chipset (AT24C1024B) interfaced with MSP430F248 through I2C UCB1 module. I'm able to write data to EEPROM but I'm not able to read back from it. First, I write the offset address to EEPROM before reading from it. After transmitting the last byte, I disable the TX UCB1TXIE, clear UCB1TXIFG flag, change to I2C receiver ~UCTR, enable RX UCB1RXIE, then I issue a repeated start ...


MSP430 &SPI

Started by hanz peter in MSP43013 years ago

Hi very one, I have a project contain the following. A digitale sensor type Max6666 three Pin and a MSP430 type 1232 with bord and un EEprom...

Hi very one, I have a project contain the following. A digitale sensor type Max6666 three Pin and a MSP430 type 1232 with bord and un EEprom type 25LC640 i need to measure the temperature and store it in the EEprom till now i can measure the temperature but i can not store it in the EEprom the EEprom using SPI protocol but i can not do it i use IAR compiler thus i use C language. Please can


EEPROM Corruption during Power Down

Started by shabidali in MSP43010 years ago 2 replies

Hello, We are working with MSP430fg4616 & 2.5V Microchip I2C Serial EEPROM. Need to store critical data at the time of Power Down. Using a...

Hello, We are working with MSP430fg4616 & 2.5V Microchip I2C Serial EEPROM. Need to store critical data at the time of Power Down. Using a Reset Chip also. Randomly sometimes after power down random data of EEPROM is found corrupted. Any pointers please.


Re: EEPROM reason of starvation MSP430?

Started by Claus Krause in MSP43014 years ago 2 replies

Hello Mike, you are writing to EEPROM once every 3 seconds? This means you write 20 times every minute or in other words 28800 times per day!...

Hello Mike, you are writing to EEPROM once every 3 seconds? This means you write 20 times every minute or in other words 28800 times per day! EEPROM-cells do not work for invinite count of write-cycles. Depending on device you will kill a EEPROM-cell by writing it to often (max. count of write cycles vary from 50k to 10m on most common devices). If you have to write often then change EE


SPI EEPROM

Started by in MSP43013 years ago

Hello All, ? want to use ST M95256 serial eeprom in my project. i have written some code to communicate the eeprom. But my code stability is...

Hello All, ? want to use ST M95256 serial eeprom in my project. i have written some code to communicate the eeprom. But my code stability is not good :-( So i'm looking for C code example for this device. is there anybody use this device? Any help or direction would be greatly appreciated. Yunus Altunbicak


MSP430F5438A eeprom isr works ONLY with extra print statements??

Started by mrai...@hofferflow.com in MSP4303 years ago 5 replies

Hi Folks, I am attempting to write/read a Microchip 24FC1025 eeprom using the intrinsic i2c on a Texas Instruments MSP430F5438A chip. This...

Hi Folks, I am attempting to write/read a Microchip 24FC1025 eeprom using the intrinsic i2c on a Texas Instruments MSP430F5438A chip. This may be a mistake because I got no hits when searching the Microchip forum for msp430 or F5438. Has anyone done this successfully and, if so, what are the pitfalls to watch out for? It is my understanding that this eeprom has two slave addresses...


writing in eeprom

Started by Bobby Baskar in MSP4308 years ago 1 reply

is bit writing faster than byte writing in eeprom. if bit writing is possib= le then send me a sample code. =A0 how fast is flash writing than...

is bit writing faster than byte writing in eeprom. if bit writing is possib= le then send me a sample code. =A0 how fast is flash writing than eeprom writing. =A0 bobby Add whatever you love to the Yahoo! India homepage. Try now! http://i= n.yahoo.com/trynew ------------------------------------


msp430 i2c eeprom

Started by Alonso in MSP43011 years ago 2 replies

Hello, I bought the Olimex EasyWeb2 Development board to learn the msp430 and I'm just trying to get every peripheral on the board to work one...

Hello, I bought the Olimex EasyWeb2 Development board to learn the msp430 and I'm just trying to get every peripheral on the board to work one at a time. I finally got to the eeprom, but am having many problems. I have looked at the Olimex documentation and code examples for this board but it has not been very helpful for operating the eeprom using I2C. I found TI to have documentati...


MSP430 to emulate a SPI EEPROM

Started by John Speth in MSP43011 years ago 15 replies

Hi Group- I'm hoping to tap into your various experiences regarding a specific application I am being asked to consider: We would like to...

Hi Group- I'm hoping to tap into your various experiences regarding a specific application I am being asked to consider: We would like to support a legacy device that in the past was simply an EEPROM (25LC320 SPI compatible 4K bytes). It holds sensor calibration data. When a sensor is connected to the smart sensor host, the host reads the EEPROM data. Now we want to make the senso...


interface to eeprom

Started by shastrinvs in MSP43012 years ago 2 replies

Hi all, i am trying to interface my msp430fe427 which does not have i2c capability to an atmel 24c04 eeprom. I am following the...

Hi all, i am trying to interface my msp430fe427 which does not have i2c capability to an atmel 24c04 eeprom. I am following the guidelines gievn by TI according to thier application note"I2C interfacing of the msp430 to a 24xx series eeprom". The application interfaces a msp430x11x to a 24lc04 eepromiI am not understanding how to configure the DCO and timer to my msp430fe427. Pleas


new ATMEL AT24C512B I2C EEPROM not working with TI's MSP430F1611 I2C peripheral

Started by "Louise Chan, Jr." in MSP4308 years ago 1 reply

Hi, I have limited experience in using the TI MSP430 mcus for embedded development so I'm hoping that anybody here who has plenty...

Hi, I have limited experience in using the TI MSP430 mcus for embedded development so I'm hoping that anybody here who has plenty of experience with this mcu particularly using it with the new line of ATMEL I2C EEPROMs (AT24CxxxB) would be able to help me with my problem. I've created code to access the ATMEL AT24C512 EEPROM (this is the older version of the 64kb Atmel I2C eeprom which i...


F149 SPI issue with Serial EEPROM

Started by europus in MSP43010 years ago 6 replies

Hi all , I have F149 on SPI bus with AT25160A SPI EEPROM....My problem is, inspite of all signals good in timing etc...I am not...

Hi all , I have F149 on SPI bus with AT25160A SPI EEPROM....My problem is, inspite of all signals good in timing etc...I am not able to receive a character in RXBUF0......I can see everything good on oscilloscope and see that 0X41...i.e 'A' is output from EEPROM but RXBUF0 receives 0....Does anyone have any clue to this issue?? Thanks in advance....Driver that i am using is ...


I2C interface w/ external EEPROM

Started by pitbullpc2 in MSP43014 years ago 1 reply

Hello group. I am trying to figure out what I need to do to interface my MSP430F149 to a Microchip 24LC256 serial eeprom. I have read the...

Hello group. I am trying to figure out what I need to do to interface my MSP430F149 to a Microchip 24LC256 serial eeprom. I have read the TI doc SLAA115, "I2C Interfacing of the MSP430 to a 24xx Series EEPROM", and app. notes on the Microchip website. The SLAA115 references a sample application that no longer exists under that name on the TI site. According to what I have


Problem while interfacing EEPROM with MSP430

Started by shastrinvs in MSP43012 years ago

Hi everyone My name is shastri and am a novice who has just begun to explore MSP430. I have a few problems while interfacing my atmel...

Hi everyone My name is shastri and am a novice who has just begun to explore MSP430. I have a few problems while interfacing my atmel 24c04 eeprom( it has a i2c bus) with my MSP430( i am using MSP430fe427 and it does not have i2c).I refeered apllication note slaa115 which describes interfacing 24c04 to MSP430x11x , butI am not knowing how to give clock to my SCL pin and initialise the eeprom


Help EEPROM MSP430F169

Started by intelliall in MSP43010 years ago 8 replies

Hello, my name is Bruce from PERU. Somebody will have code in C (Compiler IAR MSP430) to communicate with a serial EEPROM (anyone) micro...

Hello, my name is Bruce from PERU. Somebody will have code in C (Compiler IAR MSP430) to communicate with a serial EEPROM (anyone) micro MSP430F169. HELPPPPPPPPPPPPPPpppppppppppppp Thanks