|
|
|
AK4185
|
 |
带有SPI控制I/F的低能耗触摸屏控制器
Low Power Touch Screen Controller with SPI Control I/F
| The AK4185 is a 4-wire/5-wire resistive touch screen controller with SPI serial interface. The AK4185 incorporates a 12-bit A/D converter, enabling a precise measurement of pressed location its pressure. The AK4186 offers an automatic continuous measurement mode and complex sequential measurement option with MAV filter preprocessing, allowing a host controller to save its computing load. The AK4185 operates with a supply voltage down to 1.6V, and is available in a chip-scale ultra package, allowing the device ideally to be used for portable/mobile applications which require high performance touch screen sensing with low power and small footprint. |
|
Features
- 4-wire or 5-wire Touch Screen Interface
- SPI* Serial Interface
- 12bit SAR A/D Converter with S/H circuit
- Throughput Rate: 300Ksps (Typ.)
- Pen Pressure Measurement (4-wire)
- Continuous Read by one time command (External Clock Mode)
- Built-in Clock Generator (For Sequence Mode)
- Preprocessing with Median Averaging Filter (in Sequence Mode)
- Screen Touch Detection Output Pin (PENIRQN)
- On-chip Temperature Measurement
- Low Voltage Operation: VDD = 1.6V ~ 3.6V
- Low Power Consumption: 240μA at 1.8V
- Auto Power Down
- Package: 12-pin CSP (1.96mm x 1.46mm, pitch 0.5mm)
- Software Compatible with AK4182A
* SPI is a trademark of Motorola, Inc |
Applications
- Mobile Phones, Smart Phones
- PMP, MP3 Players, PNDs
- Digital Still Cameras, Digital Video Camcorders
AK4185 BLOCK DIAGRAM
|
 |
Download Datasheet
AK4185
May 2008 |
| |
|
|
Download
Board Manual
AKD4185
Novenber 2007 |
|
