Levetop LT7680A-R

LT7680x-R is a high-performance TFT-LCD graphic accelerator display IC. Its primary function is to assist the MCU in transferring display content to the TFT driver, providing graphic acceleration, PIP, geometric drawing, and other features to improve display efficiency and reduce the time the MCU spends on graphic rendering. It supports a wide range of display resolutions from 320×240 (QVGA) to 1280×1024 (SXGA), with 16/18-bit RGB interface support. Two MCU serial interfaces are supported: 3-wire SPI and 4-wire SPI. With 128Mb of built-in display memory, it supports color depths ranging from 1 bit per pixel (2 grayscale levels) up to 18 bits per pixel (16M colors). The built-in geometric drawing engine and hardware graphic acceleration engine (BTE) provide command-based graphic operations, improving display performance and reducing the MCU's software processing load. The high-speed SPI interface minimizes MCU I/O pin requirements. Its powerful display capabilities make it well-suited for electronic products featuring TFT-LCD screens.

• 3-wire SPI and 4-wire SPI serial interface support
• Built-in 128Mb display memory
• Support for 1bpp (monochrome, 1bit/pixel), 8bpp (color RGB 3:3:2, 1 byte/pixel), 16bpp (color RGB 5:6:5, 2 bytes/pixel; Index 2:6, 64 indexed colors/pixel with alpha; αRGB 4:4:4:4, 4,096 indexed colors/pixel with alpha) display color data formats
• 16/18-bit RGB interface panel support; compatible with TFT panels at multiple resolutions
• 4 user-definable 32×32 graphic cursors
• Virtual display function for images larger than the LCD panel size
• Picture-in-Picture (PIP) display with two PIP window regions
• Multi-display function with switchable main display window between frame buffers
• Rapid image display on wake-up
• Mirror, rotation, vertical and horizontal flip display
• Color bar display — shows color bars when no data is written; default resolution 640×480 pixels
• Boot-up display support
• Built-in 2D BitBLT engine with ROP copy, color depth conversion, solid fill, pattern fill, and two-image compositing
• Drawing primitives: dot, line, curve, ellipse, triangle, rectangle, and rounded rectangle
• Built-in ISO/IEC 8859-1/2/4/5 fonts in 8×16, 12×24, and 16×32 sizes
• User-definable half-width and full-width characters (8×16, 12×24, 16×32)
• Programmable text cursor
• Vertical and horizontal font scaling (×1, ×2, ×3, ×4)
• Text 90° rotation
• External Serial Flash data copy to frame buffer
• Standard SPI specification compatible
• 16-byte read FIFO and 16-byte write FIFO
• Interrupt generation when Tx FIFO is fully emptied and SPI Tx/Rx engine is idle
• I2C interface for external I2C device connectivity; standard mode (100kbps) and fast mode (400kbps)
• Two built-in 16-bit counters with programmable duty cycle

• Home Appliances
• Multifunction Peripherals
• Industrial Equipment
• Industrial Control
• Electronic Instruments
• Medical Devices
• Human-Machine Interface
• Test & Measurement Equipment