Forums

Serial Memory

Started by Gabriel Calin October 18, 2004
Hello everyone,

    Could anyone point some serial (SPI) memory ICs that I may use with 
MSP430? I need at least 1Mbit serial memory (Flash or EEProm). So far I 
only found SST and STMicroeletronics ICs (microchip ICs are too small 
for my app).
    Thank you

Gabriel Calin

Beginning Microcontrollers with the MSP430

On Mon, Oct 18, 2004 at 08:36:22AM -0200, Gabriel Calin wrote:

>     Could anyone point some serial (SPI) memory
ICs that I may use with 
> MSP430? I need at least 1Mbit serial memory (Flash or EEProm). So far I 
> only found SST and STMicroeletronics ICs (microchip ICs are too small 
> for my app).

Atmel-Dataflash, but they have lead times of 20 weeks for some parts.

        Matthias

atmel 64K bytes. can not remember at this moment the code. i used a i2c
eeprom from them.
 
salutari,

Gabriel Calin <gcalin@gcal...> wrote:
Hello everyone,

    Could anyone point some serial (SPI) memory ICs that I may use with 
MSP430? I need at least 1Mbit serial memory (Flash or EEProm). So far I 
only found SST and STMicroeletronics ICs (microchip ICs are too small 
for my app).
    Thank you

Gabriel Calin



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Hi,

The code is AT24CS256, it's a 256K 2-Wire serial
EEPROM.

Regards,
Boby

--- avram ionut <avramionut_m@avra...> wrote:

> atmel 64K bytes. can not remember at this moment
the
> code. i used a i2c eeprom from them.
>  
> salutari,
> 
> Gabriel Calin <gcalin@gcal...> wrote:
> Hello everyone,
> 
>     Could anyone point some serial (SPI) memory ICs
> that I may use with 
> MSP430? I need at least 1Mbit serial memory (Flash
> or EEProm). So far I 
> only found SST and STMicroeletronics ICs (microchip
> ICs are too small 
> for my app).
>     Thank you
> 
> Gabriel Calin
> 
> 
> 
> ---------------------------------
> . 
> 
> 
> 		
> ---------------------------------
>  




At 08:36 AM 10/18/2004 -0200, you wrote:

>Hello everyone,
>
>     Could anyone point some serial (SPI) memory ICs that I may use with
>MSP430? I need at least 1Mbit serial memory (Flash or EEProm). So far I
>only found SST and STMicroeletronics ICs (microchip ICs are too small
>for my app).
>     Thank you
>
>Gabriel Calin

Atmel is another.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is
the reward"
speff@spef...             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com





Hi,
another possibility is use MMC/SD card in SPI mode. On this cards you can store
up to 512MB (I successfully tried cards from 16MB to 128MB). There is only one
problem - after power up you must switch to SPI mode. This inicialisation
procesdure is described for example in Toshiba's document 'prod055.pdf' from
2003-02-10.
Jarda
  ----- Puvodnzpra ----- 
  Od: Gabriel Calin 
  Komu: msp430@msp4... 
  Odeslo: 18. rna 2004 12:36
  Predmet: [msp430] Serial Memory


  Hello everyone,

      Could anyone point some serial (SPI) memory ICs that I may use with 
  MSP430? I need at least 1Mbit serial memory (Flash or EEProm). So far I 
  only found SST and STMicroeletronics ICs (microchip ICs are too small 
  for my app).
      Thank you

  Gabriel Calin


  .




        
             
       
       


------
  . 






On Mon, Oct 18, 2004 at 02:52:06PM +0200, Jaromir Subcik wrote:

> Hi, another possibility is use MMC/SD card in SPI
mode. On this cards you
> can store up to 512MB (I successfully tried cards from 16MB to 128MB).

SD cards need a socket and much place. I wonder are there simple
chips (or solderable modules) of SDcards available?

        Matthias

Jarda,

The writing of data to the MMC is in blocks of 512 bytes right? This 
also means that one would need a large buffer area to hold the data 
prior to commiting it to the MMC card?

I have used Atmel DataFlash which is available in MMC card form 
factor, they have a built in RAM buffer to which I can trasfer a page 
block and then move it to the main flash. Does MMC have any such 
mechanism?  

Thanks
Jay


--- In msp430@msp4..., "Jaromir Subcik" <subcik@s...> wrote:
> Hi,
> another possibility is use MMC/SD card in SPI mode. On this cards 
you can store up to 512MB (I successfully tried cards from 16MB to 
128MB). There is only one problem - after power up you must switch to 
SPI mode. This inicialisation procesdure is described for example in 
Toshiba's document 'prod055.pdf' from 2003-02-10.
> Jarda
>   ----- Puvodnzpra ----- 
>   Od: Gabriel Calin 
>   Komu: msp430@msp4... 
>   Odeslo: 18. rna 2004 12:36
>   Predmet: [msp430] Serial Memory
> 
> 
>   Hello everyone,
> 
>       Could anyone point some serial (SPI) memory ICs that I may 
use with 
>   MSP430? I need at least 1Mbit serial memory
(Flash or EEProm). So 
far I 
>   only found SST and STMicroeletronics ICs
(microchip ICs are too 
small 
>   for my app).
>       Thank you
> 
>   Gabriel Calin
> 
> 
>   .
> 
> 
> 
> 
>         
>              
>        
>        
> 
> 
> --------------------------------
----------
>   Yahoo! Groups Links
> 
>     a.. To visit your group on the web, go to:
>     http://groups.yahoo.com/group/msp430/
>       
>     b.. .
>       
>     c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
Service. 
> 
> 
> 
> 




it have 2 addr pins so you can have 1M by 4 chips
regards,

Robert Bacs <robert_bacs@robe...> wrote:


Hi,

The code is AT24CS256, it's a 256K 2-Wire serial
EEPROM.

Regards,
Boby




 



---------------------------------
. 


__________________________________________________
 




Yes, data in SD/MMC are in blocks of 512 byte as default, but you can write
another block length by CMD16. It dont know if it works on each cards, but in my
case 32MB MMC and SD from PQI works with 128 bytes per block (not readable for
PC ;-)) properly. RAM buffer is in MMC/SD also = you can write block for long
time, no huge buffer is needed if data flows continuosly.
Jarda
  ----- ----- 
  Jarda,

  The writing of data to the MMC is in blocks of 512 bytes right? This 
  also means that one would need a large buffer area to hold the data 
  prior to commiting it to the MMC card?

  I have used Atmel DataFlash which is available in MMC card form 
  factor, they have a built in RAM buffer to which I can trasfer a page 
  block and then move it to the main flash. Does MMC have any such 
  mechanism?  

  Thanks
  Jay