Fast 8Kx2 ROM replacement

I don't have the message archives, but I don't think that anyone mentioned the Cypress CY22016L NVSRAM using QuantumTrap technology. Pretty cool stuff; very fast SRAM backed by NV RAM; at power-up, the SRAM is loaded from the nonvolatile store; at power-down, it's written (optionally and probably not needed for this application). The "juice" for the optional write-back on power-down is guaranteed by at least a 68 uF capacitor. The SRAM has access times of 25, 35 or 45 nsec. and unlimited writes. The NV RAM is guaranteed for 1,000,000 writes. It's a 5V part and comes in a 28-pin SOIC, so it'd fit nicely on a small PCB that'd fit the outline of a 24 pin PDIP. Here's the datasheet: http://download.cypress.com.edgesuite.net/design_resources/datasheets/ contents/cy22e016l_8.pdf This family comes in sizes ranging from the 2Kx8 just mentioned to a 512Kx8/256Kx16 item. Cheers, Chuck