As one of the leading providers, Waltop specializes in, and dedicates to pen-input total solutions, which is also known as digital inking or digitizer solutions, by employing our own patented electromagnetic (EM) technologies. Aiming to provide smartphone/mini Pad makers with complete ease when using Waltop’s 5.5mm battery free pen total solutions.
Control board Interface to USB, UART, I2C, SPI
Features
Patented Battery Free Pen
Waltop is one of the very few companies that has attained patents in terms of battery free pen technology.
High Resolution and Precision
Capable of performing up to 2000 lines per inch (LPI) and 1024 pressure levels, Waltop’s EM modules bring users a whole new writing experience with upmost accuracy even drawing the finest lines.
Impact Free towards Display’s Brightness
Compared to other touch solutions, EM Sensors are installed behind the display, and hence retains display glass’ original transparency without decreasing brightness, sharpness and contrast etc.
Durability
Designed and installed within portable devices, our EM Sensors are free from wear and tear compared to other touch solutions.
Palm Rejection
Auto switch from pen-input and hand-touch (if any), Waltop’s EM modules co-exist with other touch function while providing a user friendly environment.
Control Board
| Power Consumption to Host | Power voltage: 3.3V+/-5% |
| In Pointing Mode @125pps | 18mA (typical) |
| Support Pen Pressure | 256-512 levels |
| Resolution | 2000 lpi |
| Coordinate Accuracy | ±0.4 mm |
| Coordinate Deviation When Tilting Pen | 45° ~ 90° |
| Report Rate | 200 rps |
| Min. Pressure | 10g (typical) |
| Interface | USB, UART, I2C, SPI |
| Sizes | 4.7", 5", 5.3", 5.5", 5.7", 6" |
Sensor Board
| Flexible | PI 0.3 mm (Max) FR4 0.3 mm (Max) |
Pen
| Dimension | 5.5 mm / 7.2 mm / 9 mm |
http://www.waltop.com/english/01_products/04_detail.php?SID=156
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