1-33 > DUMMY2-3 > LCD_POWER : 2.8V4-9 > LCD_DATA : BLUE COLOR (6 bits)10-15 > LCD_DATA : GREEN COLOR (6 bits)16-21 > LCD_DATA : RED COLOR (6 bits)22-31-32 > GROUND23 > SPI : MAIN CHIP SELECT (MLCD_CS)24 > SPI : SERIAL DATA INPUT (D_SDA)25 > SPI : SERIAL DATA CLOCK (D_SCL)26 > DOTCLOCK27 > MAIN LCD RESET28 > HORIZONTAL SYNC29 > VERTICAL SYNC30 > DATA ENABLE
Anyone know if sparkfun has a walk in floor room? I could throw a stone out of my office and hit their building.
One way is with a serial interface (SPI) which writes to RAM.
They probably won't be as nice if you've been throwing rocks at their building.
This is only for initialising the display and for writing to an overlay display memory that has only a few largish pixels and don't cover the whole of the screen. Also there is only a single bit of RGB colour on this overlay.
Hmm, what makes you say that? Do you have the datasheet for the HD66790?
The only info I've found on the HD66790 so far looks bad. It's described as a RAM less controller and the system example shows it connected to a CPU via a "display controller processor" and external ram for the display.
QuoteHmm, what makes you say that? Do you have the datasheet for the HD66790?No but comments on the Spark Fun page say:-QuoteThe only info I've found on the HD66790 so far looks bad. It's described as a RAM less controller and the system example shows it connected to a CPU via a "display controller processor" and external ram for the display.I have used similar devices before in embedded systems. They are designed to be used on a processor with a built in LCD driver that constantly refreshes the display with the video information. They also need a lot of initialisation using the SPI interface before they will do anything.
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