WT2606Bx-P001 Display Driver Chip
RISC-V 140MHz · TFT Control up to 480×480@30fps · Audio · UART · OTA
The WT2606Bx-P001 is a powerful, highly integrated display driver chip designed for high‑end small and large home appliances. Featuring a RISC‑V 140MHz core and 128Mbit Flash, it provides comprehensive TFT screen control (up to 480×480 resolution at 30fps), audio playback, and rich graphical capabilities (emojis, images, videos, QR codes). The chip is controlled via a simple UART interface, supports dual‑UART transparent transmission, and enables OTA firmware and content updates. With multiple display modes, custom icon positioning, and PWM for backlight/breathing effects, it delivers a complete human‑machine interaction solution with minimal development effort.
- RISC‑V 140MHz high‑performance core
- TFT display – up to 480×480@30fps
- Audio playback – MP3/WAV, volume control
- UART control – simple command set
- Dual‑UART pass‑through – transparent data bridge
- OTA upgrade – firmware & content update
- 128Mbit Flash – ample storage
- Low power standby – < 100µA (or < 5µA shutdown)
WT2606Bx-P001 Key Features
Technical Specifications
| Parameter | Value / Condition |
|---|---|
| CPU Core | RISC‑V, 140MHz |
| Flash Memory | 128 Mbit (SPI) |
| Max Display Resolution | 480 × 480 @ 30fps |
| Display Interfaces | QSPI, SPI (supports ST77963, JD9853, JD9855, ST78041) |
| Audio Formats | MP3, WAV |
| UART Baud Rate | 115200 (configurable) |
| UART Pass‑Through | Dual‑UART transparent bridge (RX/TX/INT1/INT2) |
| Supply Voltage | 2.8V – 4.5V |
| GPIO Count | 27 |
| Standby Current | < 100 µA (idle) / < 5 µA (shutdown) |
| Graphics Accelerator | DMA, Rotation, Blending, Scaling |
| Operating Temperature | –40°C ~ +85°C |
| Package | QFN40 (5×5 mm, 0.4mm pitch) |
Key Pin Functions – QFN40
| Pin | Name | Function |
|---|---|---|
| 0 | E‑GND | Exposed pad – must connect to ground |
| 1 | BLK | LCD backlight control |
| 2 | TX2 | UART2 transmit |
| 3 | RX2 | UART2 receive |
| 4 | F/S‑VDD | SD card power |
| 5–9, 17, 19, 30, 34 | Pxx | General purpose I/O |
| 10 | VUSB | USB power input (for Li‑ion charging) |
| 11 | VOUT | Internal 3.3V output (for I/O) |
| 12 | VCC42 | Li‑ion battery input |
| 13 | VPP | Internal buck output |
| 15 | VREC | Internal reference (1µF cap to GND) |
| 16 | PWRKEY | Key wake‑up input |
| 18 | RST | AMOLED reset |
| 21/22 | XIN/XOUT | 26MHz crystal |
| 23–28 | D3/D2/DO/D1/CLK/CS | QSPI data/clock/CS (LCD interface) |
| 29 | TE | AMOLED TE interrupt |
| 31 | DACL | Audio left channel output |
| 33 | TX1 | UART1 transmit (DMA) |
| 35 | BUSY | Amplifier enable control |
| 36/37 | DP/DM | USB D+/D- |
| 38–40 | SDDAT/SDCMD/SDCLK | SD card interface |
Full pinout includes dual UART, QSPI display interface, SD card, USB, and multiple GPIOs. Refer to the datasheet for complete details.
Display & Graphics Capabilities
- Emoji & Image Playback: Display animated emojis or static images with adjustable speed and transition effects (slide up/down/left/right, fade, refresh).
- Video Playback: Play short videos via UART commands; supports single‑play, loop, and sequential loop modes.
- QR Code Generation: Display dynamic QR codes with configurable size (up to 255×255).
- Custom Icon Positioning: Place icons at any (x,y) coordinate on the screen; support up to 49 icons on a background.
- Screen Modes: Full‑screen, half‑screen, partial, tiled, layered, and multi‑control overlay.
- PWM Control: Three independent PWM outputs for backlight dimming or breathing LED effects.
- Display Off: Clear screen command to stop playback and enter black state.
OTA & Content Upgrade
- Full Program Upgrade: Update the entire firmware and all display assets via a single .wtui file.
- Individual Image/Video Update: Replace specific emoji or video files without affecting others.
- File Padding Tool: Reserve space for future content additions without rebuilding the entire image set.
- OTA Handshake: Use FD/F0 commands to negotiate and transfer firmware data over UART.
Upgrades can be performed via UART with a simple handshake and block‑transfer protocol.
WT2606Bx-P001 Applications
Why Choose WT2606Bx-P001
FAQs
What is the WT2606Bx-P001?
A high‑performance display driver chip with RISC‑V 140MHz core, TFT control, audio playback, and UART interface, designed for smart appliance HMIs.
What display resolutions are supported?
Up to 480×480 at 30fps, with support for various screen drivers (ST77963, JD9853, JD9855, ST78041).
Can WT2606Bx-P001 play audio?
Yes, WT2606Bx-P001 supports MP3/WAV playback with volume control and BUSY output for amplifier control.
How do I control the chip?
Via UART using a simple command set (115200 baud). A comprehensive list of commands is provided in the datasheet.
Does WT2606Bx-P001 support OTA updates?
Yes, both firmware and display content can be updated via UART using the FD/F0 upgrade protocol.
What are the power modes?
Normal operation, idle (< 100µA), and shutdown (< 5µA). The chip can wake from standby via UART or PWRKEY.
What is the dual‑UART pass‑through?
WT2606Bx-P001 allows transparent communication between two UART devices – useful for bridging a host MCU to another device while the chip also processes display commands.
What is the external Flash capacity?
128 Mbit (16 MB) SPI Flash, which stores all display assets (images, videos, emojis) and firmware.
Note: The chip requires an external 26MHz crystal and appropriate decoupling capacitors (1µF/10µF). The QSPI interface is used for the display, while SPI is used for Flash. For detailed command descriptions and upgrade procedures, refer to the full datasheet. The module supports both DAC audio output and PWM speaker output (via external amplifier).
