NHD-2.23-12832UCB3 Newhaven Display, NHD-2.23-12832UCB3 Datasheet - Page 12

• Manufacturer Part Number: NHD-2.23-12832UCB3
• Description: LCD OLED GRAPHIC 128 X 32 BLUE
• Manufacturer: Newhaven Display

Specifications of NHD-2.23-12832UCB3

• Pixel Density: 128 x 32
• Viewing Area (w X H): 60 mm x 18 mm
• Operating Voltage: 2.85 V
• Operating Current: 28 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Illumination Color: Blue
• Viewing Angle: 80 deg
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Serial Interface
The serial interface consists of serial clock SCLK, serial data SDIN, D/C, and /CS.
D0 acts as SCLK and D1 acts as SDIN. D2 should be left open. D3~D7, E, and R/W should be connected to GND.
SDIN is shifted into an 8‐bit shift register on every rising edge of SCLK in the order of D7, D6,…D0.
D/C is sampled on every eighth clock and the data byte in the shift register is written to the GDRAM or
command register in the same clock.
Note: Read is not available in serial mode.
I
The I2C interface consists of a slave address bit SA0, I2C‐bus data signal SDA, and I2C‐bus clock signal SCL.
D1 and D2 can be tied together, and act as SDA. D0 acts as SCL. Both the data and clock signals must be
connected to pull‐up resistors. /RES is used to initialize the device.
Note: SA0 bit allows the device to have a slave address of either “0111100” or “0111101”.
Note: Data and acknowledgement are sent through the SDA. The ITO track resistance and the pull‐up
resistance at SDA becomes a voltage potential divider. As a result, it may not be possible to attain a valid logic
“0” level on SDA for the ACK signal. SDA
signal will be ignored on the I2C bus.
For detailed protocol information, see datasheet: http://www.newhavendisplay.com/app_notes/SSD1305.pdf
2
C Interface
Function
Write Command
Write Data
/RD /WR
0
0
IN
must be connected, but SDA
0
0
/CS
0
0
[12]
D/C
0
1
D0
↑
↑
OUT
may be disconnected and the ACK