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NHD-27-2864WDY3 Graphic OLED Display Module NHD- Newhaven Display 27-27 Diagonal Size 2864-28 x 64 Pixel Resolution WD- Model Y- Emitting Color: Yellow 3- +33V Power Supply

1 NHD WDY3 Graphic OLED Display Module NHD- Newhaven Display Diagonal Size x 64 Pixel Resolution WD- Model Y- Emitting Color: Yellow V Power Supply Newhaven Display International, Inc 266 Galvin Ct Elgin IL, 624 Ph: Fax: wwwnewhavendisplaycom nhtech@newhavendisplaycom nhsales@newhavendisplaycom

2 Document Revision History Revision Date Description Changed by - 6/2/27 Initial Release ML 7/25/27 Update Storage Temperature range ML Functions and Features 28 x 64 pixel resolution Built-in SSD322 controller Parallel or Serial MPU interface Single, low voltage power supply Power options via on-board jumpers RoHS compliant [2]

3 Mechanical Drawing A B C D (VA) 369 (AA) (,28) (,) 687 Detail A 2- P2549 = 4826 Active Area 27" 28 x 64 Pixels 64 (AA) 634 (VA) (MAX) 25 Rev Description Date - Initial release 6//7 PROPRIETARY Segment 366,367 ( Column ) Common 64 ( Row 64 ) Common 27 ( Row ) Segment 2,3 ( Column 28 ) Common ( Row 64 ) Common 63 ( Row ) Driver IC Memory Mapping ( 256 x 64 in 48 x 28 ) (,92) Notes: Unit Display Color: Yellow mm 2 Interface: 8-bit 68XX/8XX Parallel, 3-/4-wire SPI Gen Tol Date Part Number: 3 Controller: SSD322 ±3 6//7 NHD WDY The information contained herein is the exclusive property of Newhaven Display International, Inc and shall not be copied, reproduced, and/or disclosed in any format without permission [3] Detail A A B C D

4 Interface Description Parallel Interface: Pin No Symbol External Function Description Connection VSS Power Supply Ground 2 VDD Power Supply Supply Voltage for OLED module 3 NC (BC_VDD) - No Connect by default Can be configured to provide independent supply voltage (28V 2V DC) for boost converter (refer to On-Board Jumper Options section below) 4 D/C MPU Data/Command select signal, D/C=: Command, D/C=: Data 5 R/W or /WR MPU 68-interface: Read/Write select signal, R/W=: Read, R/W=: Write 88-interface: Active LOW Write signal 6 E or /RD MPU 68-interface: Operation Enable signal, falling edge triggered 88-interface: Active LOW Read signal 7-4 DB DB7 MPU 8-bit bi-directional Data Bus 5 NC (VCC) - No Connect by default Can be configured for external VCC (+5V) (refer to On-Board Jumper Options table below) 6 /RES MPU Active LOW Reset signal 7 /CS MPU Active LOW Chip Select signal 8 /SHDN (NC) MPU Active LOW Shutdown control pin for boost converter (pulled HIGH via on-board 5kΩ resistor) Can be made a No Connect by removing resistor R 9 BS MPU MPU Interface select signal 2 BS MPU MPU Interface select signal Serial Interface: Pin No Symbol External Function Description Connection VSS Power Supply Ground 2 VDD Power Supply Supply Voltage for OLED module 3 NC (BC_VDD) - No Connect by default Can be configured to provide independent supply voltage (28V 2V DC) for boost converter (refer to On-Board Jumper Options table below) 4 D/C MPU Data/Command select signal, D/C=: Command, D/C=: Data (tie LOW for 3-wire Serial Interface) 5-6 VSS Power Supply Ground 7 SCLK MPU Serial Clock signal 8 SDIN MPU Serial Data Input signal 9 NC - No Connect -4 VSS Power Supply Ground 5 NC (VCC) - No Connect by default Can be configured for external VCC (+5V) (refer to On-Board Jumper Options section below) 6 /RES MPU Active LOW Reset signal 7 /CS MPU Active LOW Chip Select signal 8 /SHDN (NC) MPU Active LOW Shutdown control pin for boost converter (pulled HIGH via on-board 5kΩ resistor) Can be made a No Connect by removing resistor R 9 BS MPU MPU Interface select signal 2 BS MPU MPU Interface select signal [4]

Interface Selection MPU Interface Pin Selections Pin Name 68 Parallel 8-bit interface 88 Parallel 8-bit interface 3-wire Serial Interface 4-wire Serial Interface BS BS MPU Interface Pin Assignment

SCLK Tie LOW /CS Tie LOW /RES 4-wire SPI Tie LOW NC SDIN SCLK Tie LOW /CS D/C /RES On-Board Jumper Options Default Jumper Setting R4 R5 R7 Description Close Open Open (default) OLED controller and

5 Interface Selection MPU Interface Pin Selections Pin Name 68 Parallel 8-bit interface 88 Parallel 8-bit interface 3-wire Serial Interface 4-wire Serial Interface BS BS MPU Interface Pin Assignment Summery Bus Data/Command Interface Control Signals Interface D7 D6 D5 D4 D3 D2 D D E R/W /CS D/C /RES 8-bit 68 D[7:] E R/W /CS D/C /RES 8-bit 88 D[7:] /RD /WR /CS D/C /RES 3-wire SPI Tie LOW NC SDIN SCLK Tie LOW /CS Tie LOW /RES 4-wire SPI Tie LOW NC SDIN SCLK Tie LOW /CS D/C /RES On-Board Jumper Options Default Jumper Setting R4 R5 R7 Description Close Open Open (default) OLED controller and boost converter + OLED panel are powered from VDD (pin #2) This allows the full module to be powered by a single low-voltage supply Jumper Option # - Independent Supply Voltage for Boost Converter (BC_VDD) R4 R5 R7 Description Open Close Open Boost converter + OLED panel are powered from BC_VDD (pin #3) OLED controller is still powered from VDD (pin #2) This allows for increased efficiency through the boost converter, by allowing a supply voltage up to +2V at its input, BC_VDD (pin #3) Jumper Option #2 External Supply Voltage for OLED Panel (VCC) R4 R5 R7 Description Open Open Close OLED panel is powered from VCC (pin #5) boost converter is not used OLED controller is still powered from VDD (pin #2) This allows for maximum module efficiency, and drastically reduced total current consumption Default Jumper Setting Jumper Option # Jumper Option #2 For detailed electrical information on each jumper option, please see the Electrical Characteristics table below [5]

6 Electrical Characteristics Values for Current shown below are based on the recommended initialization provided on page 2 Item Symbol Condition Min Typ Max Unit Operating Temperature Range Top Absolute Max ⁰C Storage Temperature Range Tst Absolute Max ⁰C Default Jumper Setting Supply Voltage for Module VDD V Supply Current for Module IDD Jumper Option # VDD=33V, 5% ON ma VDD=33V, % ON ma Supply Voltage for Module VDD V Supply Voltage for Boost Converter BC_VDD V Supply Current for Module IDD VDD=33V µa BC_VDD=5V, 5% ON ma Supply Current for Boost Converter IDDBC BC_VDD=5V, % ON ma BC_VDD=2V, 5% ON ma BC_VDD=2V, % ON ma Jumper Option #2 Supply Voltage for Module VDD V Supply Voltage for OLED Panel VCC V Supply Current for Module IDD VDD=33V µa Supply Current for OLED Panel ICC VCC=5V, 5% ON ma VCC=5V, % ON ma Sleep Mode Current IDDSLEEP µa H Level input Vih - 8VDD - VDD V L Level input Vil - VSS - 2VDD V H Level output Voh - 9VDD - VDD V L Level output Vol - VSS - VDD V Note: The electrical characteristics shown above for Jumper Option # and Jumper Option #2 apply only when the on-board jumpers are configured accordingly By default, only Default Jumper Setting supply voltage and current (in bold) need to be considered For details, see On-Board Jumper Options section on previous page Optical Characteristics Values for Brightness shown below are based on the recommended initialization provided on page 2 Item Symbol Condition Min Typ Max Unit Top ϕy ⁰ Optimal Bottom ϕy ⁰ Viewing - Left θx ⁰ Angles Right θx ⁰ Contrast Ratio Cr - >,: Rise Tr ns Response Time Fall Tf ns Brightness Lbr 5% ON (checkerboard) 7 5 cd/m 2 - Ta=25 C, Lbr=cd/m Lifetime 2 6, - - hrs - Ta=25 C, Lbr=8cd/m 2, - - hrs Note: Lifetime at typical temperature is based on accelerated high-temperature operation Lifetime is tested at average 5% pixels on and is rated as Hours until Half-Brightness To extend the life of the display, lower values may be used for the contrast setting registers see below table of commands for details Controller Information Built-in SSD322 controller For details, view full datasheet at [6]

7 Table of Commands Instruction Enable Grayscale Table Set Column Address Code Description D/C HEX DB7 DB6 DB5 DB4 DB3 DB2 DB DB Enable the Grayscale table settings (see command xb8) 5 A[6:] B[6:] A6 B6 A5 B5 B4 B3 B2 A B [7] A B Set column start and end address A[6:]: Column start address Range: -9d B[6:]: Column end address Range: -9d Write RAM 5C Enable MCU to write Data into RAM Command Read RAM 5D Enable MCU to read Data from RAM Command Set Row Address 75 Set row start and end address A[6:] A6 A5 A A A[6:]: Row start address Range: -27d B[6:] B6 B5 B4 B3 B2 B B B[6:]: Row end address Range: -27d Set Re-map A A[] = ; Horizontal Address Increment A[5:] A5 A A A[] = ; Vertical Address Increment B[4] B4 A[] = ; Disable Column Address remap A[] = ; Enable Column Address remap A[2] = ; Disable Nibble remap A[2] = ; Enable Nibble remap A[4] = ; Scan from COM to COM[N-] A[4] = ; Scan from COM[N-] to COM A[5] = ; Disable COM split Odd/Even A[5] = ; Enable COM split Odd/Even B[4] = ; Disable Dual COM mode B[4] = ; Enable Dual COM mode Note: A[5] must be if B[4] is Set Display Start A Line A[6:] A6 A5 A A Set Display Offset A[6:] A6 A5 A A Display Mode ~A7 X2 X X x = Entire display OFF xa5 = Entire display ON, all pixels Grayscale level 5 xa6 = Normal display xa7 = Inverse display Enable Partial Display A8 A[6:] B[6:] A6 B6 A5 B5 B4 B3 B2 A B A B RESET value Set display RAM display start line register from -27 Set vertical shift by COM from ~27 Turns ON partial mode A[6:] = Address of start row B[6:] = Address of end row (B[6:] > A[6:]) Exit Partial Display A9 Exit Partial Display mode Function Selection AB A[] = ; External VDD A[] A A[] = ; Internal VDD regulator 9d 27d xa6

8 Set Sleep Mode ON/OFF Set Phase Length Set Display Clock Divide Ratio / Oscillator Frequency VSL / Display Enhancement AE~AF X xae = Sleep Mode ON (display OFF) xaf = Sleep Mode OFF (display ON) B A[7:] B3 A[7:] B4 A[:] B[7:3] A7 A7 B7 A6 A6 B6 A5 A5 B5 B4 B3 A A A A A A A[3:] = P Phase period of 5-3 DCLK clocks A[7:4] = P2 Phase 2 period of 3-5 DCLK clocks A[3:] = ; divide by A[3:] = ; divide by 2 A[3:] = ; divide by 4 A[3:] = ; divide by 8 A[3:] = ; divide by 6 A[3:] = ; divide by 32 A[3:] = ; divide by 64 A[3:] = ; divide by 28 A[3:] = ; divide by 256 A[3:] = ; divide by 52 A[3:] = ; divide by 24 A[3:] >= ; invalid A[7:4] = Set the Oscillator Frequency Frequency increases with the value of A[7:4] Range b~b A[:] = b; Enable external VSL A[:] = b; Internal VSL B[7:3] = b; Enhanced low GS display quality B[7:3] = b; Normal 9 7 b b b Set GPIO B5 A[3:] A A A[:] = ; GPIO input disabled A[:] = ; GPIO input enabled A[:] = ; GPIO output LOW A[:] = ; GPIO output HIGH A[3:2] = ; GPIO input disabled A[3:2] = ; GPIO input enabled A[3:2] = ; GPIO output LOW A[3:2] = ; GPIO output HIGH b b Set Second Precharge Period Set Grayscale Table B6 A[3:] B8 A[7:] [7:] [7:] A5[7:] A7 7 7 A57 A6 6 6 A56 A5 5 5 A A A A52 A A A5 A A A5 Sets the second precharge period A[3:] = DCLKs Sets the gray scale pulse width in units of DCLK Range -8d A[7:] = Gamma Setting for GS [7:] = Gamma Setting for GS2 [7:] = Gamma Setting for GS4 A5[7:] = Gamma Setting for GS5 b [8] Note: < GS < GS2 < GS3 < GS4 < GS5 The setting must be followed by command x

9 Select Default Linear Gray Scale Table Set Pre-charge Voltage Set VCOMH Voltage Set Contrast Control Master Contrast Control Set Multiplex Ratio Set Command Lock B9 Sets Linear Grayscale table GS pulse width = GS pulse width = GS pulse width = 8 GS pulse width = 6 GS pulse width = 4 GS pulse width = 2 BB A[4:] BE A[3:] C A[7:] C7 A[3:] CA A[6:] FD A[2] A7 A6 A6 A5 A5 A A A A A A A A A A Set precharge voltage level A[4:] = x; 2VCC A[4:] = x3e; 6VCC Sets the VCOMH voltage level A[3:] = x; 72VCC A[3:] = x4; 8VCC A[3:] = x7; 86VCC Double byte command to select out of 256 contrast steps Contrast increases as the value increases A[3:] = x; Reduce output for all colors to /6 A[3:] = x; Reduce output for all colors to 2/6 A[3:] = xe; Reduce output for all colors to 5/6 A[3:] = xf; no change Set MUX ratio to N+ MUX N=A[6:]; from 6MUX to 28MUX ( to 4 are invalid) A[2] = ; Unlock OLED to enable commands A[2] = ; Lock OLED from entering commands x7 x4 x7f xf 27d x2 For detailed instruction information, view full SSD322 datasheet here (pages 32-47): [9]

10 MPU Interface 68-MPU Parallel Interface The parallel interface consists of 8 bi-directional data pins, R/W, D/C, E, and /CS A LOW on R/W indicates write operation, and HIGH on R/W indicates read operation A LOW on D/C indicates Command read or write, and HIGH on D/C indicates Data read or write The E input serves as data latch signal, while /CS is LOW Data is latched at the falling edge of E signal Function E R/W /CS D/C Write Command Read Status Write Data Read Data 88-MPU Parallel Interface The parallel interface consists of 8 bi-directional data pins, /RD, /WR, D/C, and /CS A LOW on D/C indicates Command read or write, and HIGH on D/C indicates Data read or write A rising edge of /RS input serves as a data read latch signal while /CS is LOW A rising edge of /WR input serves as a data/command write latch signal while /CS is LOW Function /RD /WR /CS D/C Write Command Read Status Write Data Read Data Serial Interface (4-wire) The 4-wire serial interface consists of Serial Clock (SCLK), Serial Data (SDIN), Data/Command (D/C), and Chip Select (/CS) D acts as SCLK and D acts as SDIN D2 must be left as a No Connect D3~D7, E, and R/W should be connected to GND Function /RD /WR /CS D/C D Write Command Tie LOW Tie LOW Write Data Tie LOW Tie LOW SDIN is shifted into an 8-bit shift register on every rising edge of SCLK in the order of D7, D6, D D/C is sampled on every eighth clock and the data byte in the shift register is written to the GDDRAM or command register in the same clock Note: Read functionality is not available in serial mode []

11 Serial Interface (3-wire) The 3-wire serial interface consists of Serial Clock (SCLK), Serial Data In (SDIN), and Chip Select (/CS) D acts as SCLK and D 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 D Write Command Tie LOW Tie LOW Tie LOW Write Data Tie LOW Tie LOW 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, D D/C (first bit of the sequential data) will determine if the following data byte is written to the Display Data RAM (D/C = ) or the command register (D/C = ) Note: Read functionality is not available in serial mode For detailed timing information for each interface mode, view full SSD322 datasheet here (pages 5-54): Recommended Initialization void NHD2864WDY3_Init(void){ digitalwrite(res, LOW); //pull /RES (pin #6) low delayus(2); //keep /RES low for minimum 2µs digitalwrite(res, HIGH); //pull /RES high delayus(2); //wait minimum 2µs before sending commands writecommand(xae); //display OFF writecommand(xb3); //set CLK div & OSC freq writedata(x9); writecommand(xca); //set MUX ratio writedata(x3f); writecommand(x); //set offset writedata(x); writecommand(xab); //function selection writedata(x); writecommand(xa); //set re-map writedata(x6); writedata(x); writecommand(xc7); //master contrast current writedata(xf); writecommand(xc); //set contrast current writedata(x9f); writecommand(xb); //set phase length writedata(xf2); writecommand(xbb); //set pre-charge voltage writedata(xf); writecommand(xb4); //set VSL writedata(xa); writedata(xfd); writecommand(xbe); //set VCOMH writedata(x4); writecommand(xa6); //set display mode writecommand(xaf); //display ON []

12 Example Software Routines void setcolumn(unsigned char xstart, unsigned char xend){ writecommand(x5); //set column (x-axis) start/end address writedata(xstart); //column start; 28 is left-most column writedata(xend); //column end; 9 is right-most column void setrow(unsigned char ystart, unsigned char yend){ writecommand(x75); //set row (y-axis) start/end address writedata(ystart); //row start; is top row writedata(yend); //row end; 63 is bottom row void cleardisplay(void){ unsigned int i; setcolumn(28,9); setrow(,63); writeram(); for(i=;i<496;i++){ // ((9-28)+)((63-)+) writedata(x); writedata(x); //set column (x-axis) start/end address //set row (y-axis) start/end address //single byte command (x5c) to initiate pixel data write to GDDRAM; void write2pixels(unsigned char xpos, unsigned char ypos, unsigned char pixel, unsigned char pixel2){ if(pixel>=) pixel = xff; //set st pixel value to ON else pixel = x; //set st pixel value to OFF if(pixel2>=) pixel2 = xff; //set 2nd pixel value to ON else pixel2 = x; //set 2nd pixel value to OFF if(xpos>27) xpos = 27; //boundary check (MIN xpos =, MAX xpos = 27) xpos = xpos/2; //account for GDDRAM address mapping xpos+=28; //account for GDDRAM address mapping if(ypos>63) ypos = 63; //boundary check (MIN ypos =, MAX ypos = 63) setcolumn(xpos,xpos); //set column (x-axis) start/end address setrow(ypos,ypos); //set row (y-axis) start/end address writeram(); //single byte command (x5c) to initiate pixel data write to GDDRAM; writedata(pixel); //write st of 2 pixels to the display writedata(pixel2); //write 2nd of 2 pixels to the display void displayarray2864(const unsigned char arr[]){ //display 28x64 monochrome bitmap, horizontal pixel arrangement, 8-pixels per byte unsigned int i, j; setcolumn(28,9); //set column (x-axis) start/end address setrow(,63); //set row (y-axis) start/end address writeram(); //single byte command (x5c) to initiate pixel data write to GDDRAM; for(i=;i<24;i++){ //translate each byte/bit into pixel data for(j=;j<8;j++){ if(((arr[i]<<j)&x8)==x8){ writedata(xff); else{ writedata(x); [2]

13 Quality Information Test Item Content of Test Test Condition Note High Temperature storage Test the endurance of the display at high +85⁰C, 24hrs 2 storage temperature Low Temperature storage Test the endurance of the display at low -4⁰C, 24hrs,2 storage temperature High Temperature Operation applying electric stress (voltage & current) at high temperature +85⁰C, 24hrs 2 Low Temperature Operation High Temperature / Humidity Operation Thermal Shock resistance Vibration test Atmospheric Pressure test Static electricity test applying electric stress (voltage & current) at low temperature applying electric stress (voltage & current) at high temperature with high humidity applying electric stress (voltage & current) during a cycle of low and high temperatures applying vibration to simulate transportation and use applying atmospheric pressure to simulate transportation by air -4⁰C, 24hrs,2 +6⁰C, 9% RH, 24hrs,2-4⁰C, 3min -> +25⁰C, 5min -> +85⁰C, 3min = cycle cycles -22Hz, 5mm amplitude Hz, 5G 3min in each of 3 directions X,Y,Z 5mbar, 4hrs 3 VS=8V, RS=5kΩ, CS=pF One time applying electric static discharge Note : No condensation to be observed Note 2: Conducted after 2 hours of storage at 25⁰C, %RH Note 3: Test performed on product itself, not inside a container Evaluation Criteria: : Display is fully functional during operational tests and after all tests, at room temperature 2: No observable defects 3: Luminance >5% of initial value 4: Current consumption within 5% of initial value Precautions for using OLEDs/LCDs/LCMs See Precautions at wwwnewhavendisplaycom/specs/precautionspdf Warranty Information See Terms & Conditions at [3]

Newhaven Display International, Inc Technology Drive, Suite 101 Elgin IL, Ph: Fax:

NHD 28 25664UCY2 Graphic OLED Display Module NHD Newhaven Display 28 28 diagonal size 25664 256 x 64 pixel resolution UC Model Y Emitting Color: Yellow 2 +295V power supply Newhaven Display International,