ST7789

Part: — Sitronix Technology Corporation

Type: Display Driver IC

Description: A display driver IC supporting 8080 series MCU parallel interfaces (8/9/16/18-bit), 3-line and 4-line serial interfaces, and RGB interfaces, capable of displaying 4K, 65K, and 262K colors.

Operating Conditions:

• Supply voltage (VDD, VDDI): 1.65 to 3.6 V
• Supply voltage (VCI): 2.5 to 3.6 V
• Operating temperature: -40 to +85 °C

Absolute Maximum Ratings:

• Max supply voltage (VDDI, VDD, VCI): 4.6 V
• Max junction/storage temperature: 125 °C

Key Specs:

• VDDI Operating Voltage: 1.65 to 3.6 V
• VDD Operating Voltage: 1.65 to 3.6 V
• VCI Operating Voltage: 2.5 to 3.6 V
• Input High Voltage (VIH): 0.7 * VDDI to VDDI V
• Input Low Voltage (VIL): 0 to 0.3 * VDDI V
• Output High Voltage (VOH): VDDI - 0.4 V (at IOH = -100 μA)
• Output Low Voltage (VOL): 0.4 V (at IOL = 100 μA)
• Typical VDD current (IDD): 100 μA (VDD=1.8V, VCI=2.8V, VDDI=1.8V, Normal Mode, 262K-color, 30fps)

Features:

• Supports 8080 series MCU parallel interfaces (8/9/16/18-bit)
• Supports 3-line and 4-line serial interfaces
• Supports RGB interface
• Supports 12-bit/pixel (4K-Colors), 16-bit/pixel (65K-Colors), and 18-bit/pixel (262K-Colors) data color coding
• Data transfer break, recovery, and pause functions

Applications:

Package:

• /circle6 Single chip TFT-LCD Controller/Driver with On-chip Frame Memory (FM)
• /circle6 Display Resolution: 240*RGB (H) *320(V)
• /circle6 Frame Memory Size: 240 x 320 x 18-bit = 1,382,400 bits
• /circle6 LCD Driver Output Circuits
• -Source Outputs: 240 RGB Channels
• -Gate Outputs: 320 Channels
• -Common Electrode Output
• /circle6 Display Colors (Color Mode)
• -Full Color: 262K, RGB=(666) max., Idle Mode Off
• -Color Reduce: 8-color, RGB=(111), Idle Mode On
• /circle6 Programmable Pixel Color Format (Color Depth) for Various Display Data input Format
• -12-bit/pixel: RGB=(444)
• -16-bit/pixel: RGB=(565)
• -18-bit/pixel: RGB=(666)
• /circle6 MCU Interface
• -Parallel 8080-series MCU Interface (8-bit, 9-bit, 16-bit & 18-bit)
• -6/16/18 RGB Interface(VSYNC, HSYNC, DOTCLK, ENABLE, DB[17:0])
• -Serial Peripheral Interface(SPI Interface)
• -VSYNC Interface
• /circle6 Display Features
• -Programmable Partial Display Duty
• -CABC for saving current consumption
• -Color enhancement
• /circle6 On Chip Build-In Circuits
• -DC/DC Converter
• -Adjustable VCOM Generation
• -Non-Volatile (NV) Memory to Store Initial Register Setting and Factory Default Value (Module ID, Module Version, etc)
• -Timing Controller
• -4 preset Gamma curve with separated RGB Gamma setting
• /circle6 Build-In NV Memory for LCD Initial Register Setting
• -8-bits for ID1 setting
• -8-bits for ID2 setting
• -8-bits for ID3 setting
• -6-bits for VCOM Offset adjustment
• /circle6 Driving Algorithm

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• -Dot Inversion
• -Column Inversion
• /circle6 Wide Supply Voltage Range
• -≦ I/O Voltage (VDDI to DGND): 1.65V ~ 3.3V (VDDI VDD)
• -Analog Voltage (VDD to AGND): 2.4V ~ 3.3V
• /circle6 On-Chip Power System
• -Source Voltage (VAP (GVDD) to VAN (GVCL)): +6.4~-4.6V
• -VCOM level: GND
• -Gate driver HIGH level (VGH to AGND): +12.2V ~ +14.97V
• -Gate driver LOW level (VGL to AGND): -12.5V ~ -7.16V
• /circle6 Optimized layout for COG Assembly
• /circle6 Operate temperature range: -30 °C to +85 °C
• /circle6 Lower Power Consumption

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3-line serial interface Ⅰ

4-line serial interface Ⅰ

3-line serial interface Ⅱ

4-line serial interface Ⅱ

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Table 14 pin description of serial interface

Table 2 Basic DC Characteristics

1. TA= -30 to 70 (to +85 no damage). °C °C
2. Source channel loading= 2K Ω +12pF/channel, Gate channel loading=5K Ω +40pF/channel.
3. The Max. value is between measured point of source output and gamma setting value.
4. When evaluating the maximum and minimum of VGH, VDD=2.8V.

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1. The maximum value of |VGH-VGL| can no over 30V.
2. Default register setting of Vcom and Vcomoffset is 20h

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