ST7789V2 - 240x320 TFT-LCD Controller/Driver | Sitronix
Référence : ST7789V2 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.2 | $1,20 |
| 10 | $1.05 | $10,50 |
| 100 | $0.92 | $92,00 |
| 500 | $0.78 | $390,00 |
| 1 000 | $0.65 | $650,00 |
ST7789V2 Présentation
A TFT-LCD controller/driver is a mixed-signal IC that bridges a host microprocessor and a thin-film-transistor LCD panel. It receives image data from the MCU over SPI or 8080/6800 parallel buses, stores pixel data in internal frame memory, and generates the timing, gate driver signals, and source driver analog levels required to refresh the panel. The category hierarchy is: TFT-LCD driver -> display driver IC -> display controller -> flat-panel display electronics -> optoelectronic interface IC. The on-chip frame memory eliminates the need for an external display RAM, simplifying PCB design and reducing BOM cost for embedded products.
Key features of the ST7789V2 include 262K-color display (RGB 6-6-6), 18-bit color depth support, 8-bit parallel and 4-wire/3-wire serial SPI interfaces, integrated DC-DC charge pump and gate driver circuitry, on-chip frame memory, and low-power partial-display modes. The chip supports panel resolutions up to 240 RGB x 320 dots with 720 source outputs and 320 gate outputs, enabling flexible panel designs.
The device uses an internal charge pump to produce the required analog rail voltages from a single 1.65V-3.3V supply, simplifying power-tree design. Programmable display timing, gamma correction, and 16/18-bit per pixel data paths allow fine-tuning of color depth and refresh behavior. Built-in CABC (Content Adaptive Brightness Control) reduces display power for battery-powered products.
Typical applications include wearable smartwatches, IoT sensor display modules, fitness bands, portable medical devices, handheld instruments, smart-home control panels, and any embedded MCU project driving a small color TFT panel via SPI. The chip is widely paired with ESP32, STM32, and RP2040 host microcontrollers in maker and commercial products.
When designing with this part, ensure the FPC (flexible printed circuit) routing and pinout match the chosen panel glass. The interface mode (SPI vs 8-bit parallel) is selected via IM[2:0] pins at reset; mismatched settings are a leading cause of blank-screen debugging issues.
This page synthesizes verified Sitronix specifications, drop-in alternatives, application notes, and distributor availability data not collated on the manufacturer datasheet alone.
Alternatives de remplacement direct pour ST7789V2 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ST7789V
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ST7789VI
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ST7789V2-G4-A
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ST7789V2 Spécifications
| Product Type | TFT-LCD Controller/Driver with on-chip Frame Memory |
| Manufacturer | Sitronix Technology Co., Ltd. |
| Display Resolution Support | 240 RGB x 320 dots (max) |
| Source Line Outputs | 720 |
| Gate Line Outputs | 320 |
| Color Depth | 262K colors (RGB 6-6-6), up to 16M (RGB 6-6-6) |
| Interface | 8-bit 8080/6800 parallel, 4-wire SPI, 3-wire SPI |
| On-chip Frame Memory | Yes |
| Tension d'alimentation | 1.65 V to 3.3 V |
| Température de fonctionnement | -40 C to +85 C |
| Boîtier | COG (Chip-On-Glass) |
| Type de montage | Bonded directly to TFT glass substrate |
| Document Version | V1.0 (2016/11) |
| Datasheet Size | 319 pages |
| Statut RoHS | Compliant |
Guide de configuration des broches du ST7789V2 cog (chip-on-glass)
Configuration des broches du ST7789V2 (boîtier cog (chip-on-glass)). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour ST7789V2.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ST7789V2 convient pour 6 applications: Wearable Smartwatch Display, IoT Sensor Display Module, Fitness Band / Health Monitor, Smart Home Control Panel, Handheld Test Instrument Display, Maker / DIY Embedded Project TFT.
Wearable Smartwatch Display
The ST7789V2's 240x320 resolution, on-chip frame memory, and integrated charge pump make it a strong match for compact wearable TFT displays. The COG package eliminates the need for a separate source driver, shrinking the display module footprint for wrist-worn products. Its low-power partial-display mode and CABC reduce average current draw during always-on watch-face rendering. Source-internal 4-wire SPI interface pairs cleanly with low-pin-count Bluetooth SoCs, leaving more GPIOs for touch, haptics, and sensors.
Recommandé
IoT Sensor Display Module
The ST7789V2 supports 4-wire SPI at clock rates up to 32 MHz, enabling fast full-screen refreshes for IoT dashboards and sensor HMI panels. Its integrated charge pump simplifies the power supply - no external DC-DC needed for the analog TFT rails, which reduces BOM cost for high-volume IoT products. The on-chip frame buffer means the host MCU can sleep while the display holds the last image, cutting system power. SPI interface allows the use of inexpensive 4-pin FPC connectors, easing enclosure design.
Recommandé
Fitness Band / Health Monitor
The ST7789V2's 262K-color output and partial-display mode make it suitable for fitness bands that show always-on step counters and periodic full-color activity summaries. The CABC function automatically dims the backlight during static content, extending battery life on coin-cell or Li-Po powered wearables. The COG package's small footprint fits 1.32-inch and 1.54-inch round displays common in fitness products. SPI write speed of 32 MHz supports smooth UI animations without visible tearing.
Recommandé
Smart Home Control Panel
The ST7789V2's 240x320 resolution delivers enough pixel density to render icons, status text, and basic touch UI on 1.5- to 2.4-inch wall-mounted control panels. The integrated gate and source drivers remove the need for an external TFT companion chip, reducing PCB complexity in space-constrained back boxes. Its parallel 8080 interface option allows higher refresh rates for animated feedback (e.g., light dimming, thermostat sliders) when paired with STM32 or NXP i.MX RT hosts.
Recommandé
Handheld Test Instrument Display
The ST7789V2's industrial temperature range (-40C to +85C) and high contrast ratio make it suitable for handheld multimeters, oscilloscope probes, and field-service instruments. Its 262K-color capability allows color-coded waveform or measurement readouts that improve usability versus monochrome alternatives. The on-chip frame memory decouples display refresh from the measurement engine, preventing screen flicker during high-speed data acquisition.
Recommandé
Maker / DIY Embedded Project TFT
The ST7789V2 is one of the most widely supported TFT controllers across Arduino, ESP32, RP2040, and Zephyr ecosystems, with mature libraries such as TFT_eSPI, Arduino_GFX, and the Zephyr ili9xxx-style driver (which covers ST7789V variants). Its 4-wire SPI interface requires only 4 MCU pins, making it ideal for low-pin-count boards like the Raspberry Pi Pico. Cheap pre-bonded modules from Waveshare, Adafruit, and LCSC lower the entry barrier for hobbyist projects.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ST7789V2 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ST7789V | ST7789VI | ST7789V2-G4-A |
|---|---|---|---|---|
| Package | COG (Chip-On-Glass) | COG - same | COG - same | COG - same |
| Brand | Sitronix | Sitronix | Sitronix | Sitronix |
| Resolution (max) | 240x320 | 240x320 | 240x320 | 240x320 |
| Color Depth | 262K colors | 262K colors | 262K colors | 262K colors |
| Source / Gate Outputs | 720 / 320 | 720 / 320 | 720 / 320 | 720 / 320 |
| On-chip Frame Memory | Yes | Yes | Yes | Yes |
| Interface | 8-bit parallel + 4-wire SPI + 3-wire SPI | 8-bit parallel + 4-wire SPI | 8-bit parallel + 4-wire SPI | 8-bit parallel + 4-wire SPI + 3-wire SPI |
| Supply Voltage | 1.65V to 3.3V | 1.65V to 3.3V | 1.65V to 3.3V (industrial grade) | 1.65V to 3.3V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C (industrial) | -40C to +85C |
Principaux différenciateurs
- Sitronix's mainstream 240x320 controller with widespread library support (vs ILI9341)
- Latest V2 revision with improved CABC and partial-display power saving (vs ST7789V)
- Customer-binned variant for OEM qualification (vs ST7789V2 (generic))
Notes de conception
The ST7789V2 is a COG device - the silicon is bonded directly to the TFT glass, so there is no traditional PCB pinout. Engineers must follow the Sitronix pad-coordinate diagram and the panel-maker FPC layout for routing. Mismatched IM[2:0] settings (interface select pins) are the most common cause of a blank display at first power-up; verify these match your firmware initialization.
The ST7789V2 integrates the charge pump and gate driver, eliminating external analog rails. Bulk decoupling capacitors (typically 1uF-4.7uF X7R) on VCI, VDD, and the charge-pump outputs are mandatory. The CABC function can cut display power 20-40% during static content; enable it for battery-powered products but disable it during video/animation.
For SPI mode, keep the SCLK trace under 50 mm and add a 33 ohm series resistor near the host MCU to dampen ringing. Use 4-wire SPI for full-duplex register access at 32 MHz; fall back to 3-wire SPI only when the host has no DC pin available. Verify SPI mode (CPOL/CPHA) matches your MCU driver - the ST7789V2 uses SPI mode 0 by default.
Do not hot-plug the display while VCI is powered - the ST7789V2 requires a clean power-on reset. After the SLPOUT command, wait at least 120 ms before issuing display-on (DISPON). Forgetting this delay is the leading cause of flickering or partial panel initialization. Always read the SITRONIX ST7789V2 datasheet (V1.0) power-on sequence chapter before bringing up a new panel.
Informations de conformité
RoHS and REACH compliant per Sitronix product information; lead-free bonding materials. AEC-Q100 not applicable for display driver ICs.
