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Topics - rgayoso

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Graphic LCDs / Connecting NHD-12232AZ-FL-YBW to a Cypress PSoC 3
« on: December 01, 2014, 05:29:29 PM »
I am connecting a NHD-12232AZ-FL-YBW display to a Cypress PSoC 3 cpu.
The cpu has separate RD' and WR'  active-low pulses.
Your datasheet says that the connector has only one R/W instead of separate read and write lines.
The  SBN1661G_M02 datasheet says that with the RESET pulse I can switch to a 80-type interface (instead of a 68-type interface). In the 80-type interface the R/W switches to WR' and the E switches to RD'.
My question is: You have two lines E1 and E2. I assume that this is because you have two SBN1661G_M02 chips.
If so, the E1 will switch to RD'1 and E2 will switch to RD'2.
But there is a single R/W line, that will switch to WR', so how do I know if I am writing to the 1st of 2nd chip?

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