I'm new to LCDs and somewhat green on embedded development in general. I'm intending to use the CFAX12864T1 display for a small, handheld measurement device. I haven't made a final MCU selection, but I'm considering TI's MSP430 series, STM's STM32 series, Freescale's MCF522xx ColdFire V2, and Atmel's XMEGA. I have a couple of sample displays and the CFAXZIF-DEMO board, which I successfully got working with an old PC.
The display looks great, but something I've noticed with the CFAXZIF-DEMO / PC setup is that the display refresh appears really slow. When I press any of the eight demo buttons (Image, Logo, Stripes, etc.), it takes probably a full second or so to draw the new image to the screen. (Maybe less; I didn't time it. It's visibly slow, though.)
Is this representative of the performance I'm likely to see with an MCU in a "real" system? Or is this simply a limitation of the PC's parallel-port speed, or the way the demo app is coded, etc.?
Also, is there a significant performance difference between the controller's parallel and SPI interfaces?
Thanks!
The display looks great, but something I've noticed with the CFAXZIF-DEMO / PC setup is that the display refresh appears really slow. When I press any of the eight demo buttons (Image, Logo, Stripes, etc.), it takes probably a full second or so to draw the new image to the screen. (Maybe less; I didn't time it. It's visibly slow, though.)
Is this representative of the performance I'm likely to see with an MCU in a "real" system? Or is this simply a limitation of the PC's parallel-port speed, or the way the demo app is coded, etc.?
Also, is there a significant performance difference between the controller's parallel and SPI interfaces?
Thanks!
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