Does anyone have suggestions for easy/simple/cheap (yeah, pick one or two) RAM solutions for the Arduino? I'm not talking about flash, EEPROM, or FRAM which all have a limited number of write cycles and are slow. I need several kB.
I'd like to have a serial (preferably SPI) interface so as not to occupy too many pins. I could probably use a couple of shift registers and connect a parallel RAM of some flavor, but I would like to keep the component count low.
I've done a bit of googling with no luck. Any suggestions?