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NHD-2.7-12864WDY3-M Datasheet(PDF) 11 Page - Newhaven Display International, Inc. |
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NHD-2.7-12864WDY3-M Datasheet(HTML) 11 Page - Newhaven Display International, Inc. |
11 / 13 page [11] Serial Interface (3-wire) The 3-wire serial interface consists of Serial Clock (SCLK), Serial Data In (SDIN), and Chip Select (/CS). D0 acts as SCLK and D1 acts as SDIN. D2 must be left as a No Connect. D3~D7, E, R/W, and D/C should be connected to Ground. Function /RD /WR /CS D/C D0 Write Command Tie LOW Tie LOW 0 Tie LOW ↑ Write Data Tie LOW Tie LOW 0 Tie LOW ↑ SDIN is shifted into an 9-bit shift register on every rising edge of SCLK in the order of D/C, D7, D6,…D0. D/C (first bit of the sequential data) will determine if the following data byte is written to the Display Data RAM (D/C = 1) or the command register (D/C = 0). Note: Read functionality is not available in serial mode. For detailed timing information for each interface mode, view full SSD1322 datasheet here (pages 50-54): http://www.newhavendisplay.com/app_notes/SSD1322.pdf Recommended Initialization void NHD12864WDY3_Init(void){ digitalWrite(RES, LOW); //pull /RES (pin #16) low delayUS(200); //keep /RES low for minimum 200µs digitalWrite(RES, HIGH); //pull /RES high delayUS(200); //wait minimum 200µs before sending commands writeCommand(0xAE); //display OFF writeCommand(0xB3); //set CLK div. & OSC freq. writeData(0x91); writeCommand(0xCA); //set MUX ratio writeData(0x3F); writeCommand(0xA2); //set offset writeData(0x00); writeCommand(0xAB); //function selection writeData(0x01); writeCommand(0xA0); //set re-map writeData(0x16); writeData(0x11); writeCommand(0xC7); //master contrast current writeData(0x0F); writeCommand(0xC1); //set contrast current writeData(0x9F); writeCommand(0xB1); //set phase length writeData(0xF2); writeCommand(0xBB); //set pre-charge voltage writeData(0x1F); writeCommand(0xB4); //set VSL writeData(0xA0); writeData(0xFD); writeCommand(0xBE); //set VCOMH writeData(0x04); writeCommand(0xA6); //set display mode writeCommand(0xAF); //display ON } |
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