Weltrend | Products

Projector processors

WT8921

WT8921 is a high performance image processor which incorporates a 32-bit RISC CPU with DSP instruction set that operates up to 192 MHz and rich vision-processing-units/interfaces such as scaler, lens correction, image mask, and etc. Beyond that, WT8921 features a powerful Vision Acceleration Engine (VAE) to support video-out interface, UART, USB, and SPI for the projector system. With advanced algorithms inside, WT8921 enables intelligent self-adjustment of the smart projector, such as auto keystone correction and auto focus, and of course speeds up the design cycle and time-to-marke

Features

- Embedded 32-bit RISC CPU core
- DSP instruction set

- Up to 192 MHz operation frequency
- Memory
- Embedded serial flash

- Internal 64 KB ILM

- Internal 32 KB DLM

- 256 KB optimized frame buffers for video data storage and CPU access

- 256 KB virtual memory of VAE
- Vision Acceleration Engines (VAE)
- Perspective, Mask, Binarization, Line Detection, Pixel
- Video inputs
- ITU BT.601 / ITU BT.656 YUV

- Video formats: VGA (0.3MP, 640x480 or 752x480)
- Video outputs
- ITU BT.601 / ITU BT.656 YUV
- On screen display (OSD)
- Embedded LDO 2.8V for CMOS sensor
- Communication interfaces
- ISP and ICE interface

- 1 Quad SPI for Serial Flash Controller interface up to 96 MHz

- 1 USB device I/F (Complete compatible with Universal Serial Bus specification 2.0 Full Speed)

- 1 master/slave mode I2C interfaces up to 400 kHz

- 2 full-duplex UART up to 1.5 MHz

- 1 master/slave SPI up to 12 MHz

- 2 PWM 12-bit for voice
- Timer with 16-bit prescaler
- GPIO with configurable input/output direction and pull-up/pull-down resistor
- Window Watchdog Timer (WWDT)
- CPU clock source
- External crystal oscillator 24 MHz (built-in PLL)
- Power consumption
- Power supply 3.3V
- Operating temperature range: -40℃ to +85℃
- Package type: QFN-64 (8x8)

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