Production£º

Tokyo, Japan, July 11, 2007¡ªAsahi Kasei EMD Corporation today launched the AK4184, a multifunctional touch-screen controller for consumer handheld devices such as cellular phones, electronic dictionaries, and smart-phones.

The AK4184 has advanced integrated functions that include a key pad scanner, GPIO expander, and an output circuit for LED brightness control in addition to the feature of AKM single-functional touch-screen controller. The AK4184 fully supports the user interface design of portable equipments having a larger and higher-resolution display.

Key functions of the AK4184 include a four-wired resistive touch screen interface capable of position detection and pen pressure measurement, sampling frequency up to 125KHz, a 6 x 5-line keypad scanner, GPIO with 8 input/output ports, LCD backlight brightness control, and SPI™ mP interface.

The operating voltage of analog section range is from 2.5V to 3.6V. A separate 1.6V digital power supply allows an easy interface with a digital chip, such as a CPU. Its ultra low current consumption, 400mA achieves significant power saving for the system design.

The AK4184 is available in small 41-pin BGA. Evaluation boards and samples are available now. To obtain more information, contact Asahi Kasei EMD Corporation, Audio Business Operation, Nishi-Shinjuku 1-23-7, Shinjuku-ku, Tokyo 160-0023, Japan.