Template: Pico LCD 1.8 Spec

Overview

1.8inch LCD Display Module For Raspberry Pi Pico, 65K RGB Colors, 160×128 Pixels, SPI Interface

Features

160×128 resolution, 65K RGB colors, clear and colorful displaying effect
SPI interface requires minimal IO pins

Specifications

Operating voltage: 2.6~5.5V
Resolution: 160×128 pixels
Communication interface: 4-wire SPI
Display size: 35.04 × 28.03 mm
Display panel: TFT
Pixel size: 0.219 × 0.219 mm
Driver: ST7735S
Dimensions 52.0 × 34.5 mm

Pinout

Dimension

Working Protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has a display requirement.
RESX Is the reset pin, it should be low when powering the module and be higher at other times;；
CSX is slave chip select, when CS is low, the chip is enabled.
D/CX is data/command control pin, when DC = 0, write command, when DC = 1, write data
SDA is the data pin for transmitting RGB data, it works as the MOSI pin of SPI interface;
SCL work s the SCLK pins of SPI interface.
SPI communication has data transfer timing, which is combined by CPHA and CPOL.
CPOL determines the level of the serial synchronous clock at an idle state. When CPOL = 0, the level is Low. However, CPOL has little effect on the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of the serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.
There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

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