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Messages - heijinzhai

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OLEDs / Re: NHD-0216CW-AY3 VDD and REGVDD pin && SPI example
« on: June 02, 2017, 10:37:46 AM »
Hi Saurabh_B

Thanks for your quick response. It seems when VDD is 3.3V, RegVDD should be connected with GND.

RegVDD is an internal 5V I/O regulator select signal, can you tell me what is the "internal 5V I/O regulator" used for?


OLEDs / NHD-0216CW-AY3 VDD and REGVDD pin && SPI example
« on: June 02, 2017, 01:41:42 AM »
Hi experts,

I'm using NHD-0216CW-AY3 in our product, the spi interface is in used, can you give me some comments on these two questions?

1) pin REGVDD, VDD is the power supply for OLED and logic, by "logic" is it the control interface, which is SPI interface in my design? I'm using 3.3V now, is that mean the io standard of al control signals is 3.3V LVCMOS?

2) pin REGVDD, it is "Internal 5V I/O Regulator select signal" in datasheet, the internal regulator is used for what? In my design, I have connected VDD with 3.3V, does it mean I need to connect it with GND for the "2.8V operation"

3) I found an example code for SPI interface in the link below, which is used for NHD-0216KZW, can it also be used by NHD-0216CW-AY3 in my product?


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