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I have a fairly odd need here. Basically, I would like to extend the RAM of a PIC18F from 4KB to around
20KB so that I can create some sortof framebuffer for a 130x130 lcd screen. Being simple chips, PICs can't address external RAM like, say, an 8051 can. I would like to keep the pincount down as _low_ as possible, with speed less of a priority. I was just wandering: is there such thing on the market as an SPI SRAM?
If so is there anywhere that will supply to the UK in small volumes -