| Touch Screen Controller |
| AK4184A |
| Touch Screen Controller with Keypad Scanner and GPIO Expander |
| The AK4184A is a 12-bit A/D converter witch operates 125kHz (max) sampling rate with a 4-wire resistive touch screen controller (TSC), including low-on resistance switches, touch pressure measurement capability, a maximum 6 x 5 keypad scanner, eight GPIO ports, and a PWM generator for LED contrast control. The AK4184A operates down to a 2.5V supply voltage, and it tolerates digital I/O interface voltage from 1.6V to AVDD in order to connect to low voltage controllers. The AK4184A supports SPI interface for communication to a host controller. The AK4184A is available in a 41-pin BGA package and it operates over a temperature range of -40 ° C to +85 ° C. The AK4184A is suitable for Cellular Phone, DSC, DVC, Smart Phone and MP3 player application systems. |
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- Applicatio ns : Mobile Phone, DSC, DVC, Smart Phone and MP3 player
- SPI Serial Interface
- 12 bit SAR A/D Converter with S/H Circuit
- 4-wire Resistive Touch Screen Interface
- Sampling Frequency: 125 kHz (max)
- Pen Pressure Measurement
- 6 x 5 Keypad Scanner
- 8 GPIO Ports
- PWM Generator for LED Bias Control
- Power Supply:
AVDD = 2.5V ~ 3.6V
IOVDD = 1.6V ~ AVDD (Digital I/F)
- Low Power Consumption: 400
 A
- Package: 41pin BGA (4mm x 4mm, pitch 0.5mm)
- Evaluation Board: AKD4184A .
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PDF
Download |
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Evaluation Board Manual
Rev. MS0947-E-00 2008/04
PDF : 618KB / 36pages |
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Evaluation Board Manual
Rev. KM093500 2008/03
PDF : 702KB / 25pages |
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| AK4184A BLOCK DIAGRAM |
