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Control IC－HW0868
The HW0868 chip is Electromagnetic technology control chip. It works with electromagnetic pen to provide a convenient input solutions, It supports 2 to 100 inch screen and can be applied to Drawing Board, Tablet PC, E-Paper & E-Books, Tablet Monitor, Mobile Handset, Net Book etc.
Features
- 0.18um Tech
- 2.7-3.6v voltage supply
- Integrated PRG converter to provide the internal 1.5V supply
- Support idle/sleep mode to save power
- Integrated 16K words (32Kbytes) local program memory
- Integrated 4K words (8Kbytes) local data memory
- Run at 4MHz-24MHz frequency, low power consumption
- Up to 92(in/out configurable) scan points
- 8M/16M Crystal Oscillator provide the run mode system clock (default 8M)
- Additional 5 System Time Counters
- 16 channels GPIO
- Watch dog timer (clocked by 32K RCOSC or external crystal)
- 2.7 voltage detect logic
- 32K on-chip RC Oscillator provide the power saving mode system clock
- SPI/I2C/UART/USB bus interface
- USB full speed controller/PHY with 320byte buffer & 3 interrupt endpoints
- I2C/UART/USB firmware update supported (USB update need user program support)
- High Screen Resolution 5080lpi.
- High Pressure Levels 2048.
- Support analog and digital electromagnetic pen
- High-precision positioning ±0.1mm.
- Low power consumption < 8mA. (only chip part)
- 169 pin BGA package
| Item | HW0868 | HW0808 | ||
| Touch screen size | 2~100 | inch | 2~10 | inch |
| Support pen type | digital and analog pen | - | analog pen | - |
| Resolution | 5080 | LPI | 2048 | LPI |
| Max. report rate | 220 | dots/s | 133 | dots/s |
| Tilt range | ±60 | ° | ±20 | ° |
| Max. read height | 25(center)/10(edge) | mm | 15(center)/5(edge) | Mm |
| Interface | I2C、USB、UART | - | UART | - |
| Interface voltage | adjust | V | 3.3 | V |
| External Crystal | 8/16 | MHZ | 4/8 | MHZ |
| Configurable Frequency | 167/333/400/500/533/561/592/667… | kHz | 167/333/400/500/667 | KHz |
| Voltage | 3.3±0.3 | V | 3.3±0.3 | V |
| Max. Current | 10 | ma | 8 | ma |
| Package | BGA169 0.5mm | - | BGA121 0.5mm | - |
| - | TQFP128 0.4mm | - | ||
| Operating temperature | -40~85 | ℃ | -40~85 | ℃ |
| Pen accuracy | ±0.1/0.4 | mm | ±0.4/0.8 | mm |
| Max. pressure level | 2048 | - | 1024 | - |
| Pen track-ability | >3 | m/s | <1.5 | m/s |
| Pen Inspection time | <100(digital pen)/60 | ms | <100 | ms |
| Max.pen key number | 4 | - | 1 | - |
| Support pen eraser | yes | - | yes | - |