In SX Microcontrollers, SX/B Compiler and SX-Key Tool, pearl62 wrote:

Actually, the SX28AC100 that's shown in the picture was only sampled and never sold. The 2KB die just couldn't handle 100MHz very well... It needed a huge heat slug in the bottom of the package to run at that speed. The SX48/52 die was designed for the higher speeds, with tweaks to the program memory cells to get a bit more speed.

I kept a bunch of SX28AC100's if anyone is ever interested in them. I know Farnell actually sold them at one time, but they shouldn't have as they they were only samples...

Cheers,
Stephen

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