Increase memory size
Increase memory size
(OP)
I'm designing a microcontroller embedded system using P89C51RC2 (8051 based with 4 i/o ports (8 bits)). I need to have a least 1 to 8 Mbytes of external memory for data storage. How can I do it at the lowest cost?
What type of memory shall i use? EEprom, CompactFlash, etc?
- I do not like to use too many address lines. I have 2 8bit ports used for LCD and keypads already. Can I use i2c interface? any suggestion for 1 to 8Mbytes memory expansion is welcome. Hopefully i do not need to use a 16bit controller.
What type of memory shall i use? EEprom, CompactFlash, etc?
- I do not like to use too many address lines. I have 2 8bit ports used for LCD and keypads already. Can I use i2c interface? any suggestion for 1 to 8Mbytes memory expansion is welcome. Hopefully i do not need to use a 16bit controller.





RE: Increase memory size
RE: Increase memory size
Think I'm heading the right direction.
RE: Increase memory size
to my mind you are on the right approach as long as you do not need to access your data with ahigh data rate. If speed is important I would suggest to follow chbarn24050 suggestion.
RE: Increase memory size