NEC Electronics Announces World's First Implementation of Mobile CMADS(TM) High Speed Serial Interface Technology in Mobile Handsets
KAWASAKI, Japan and DUESSELDORF, Germany, Nov. 17 /-- NEC Electronics has announced that its uPD161833M and uPD161605M LCD driver ICs, based on its Mobile CMADS(TM) (Current Mode Advanced Digital Signaling) high-speed serial data transmission method, will be employed in select NEC mobile handsets from the fall of 2005. This marks the first successful implementation of cutting-edge display drivers with integrated receiver circuits, as well as the first use of NEC Electronics' Mobile CMADS technology, designed to enhance data transmission speed, performance, and mobile handset design.
With the growth of third generation (3G) handsets with high-definition displays and video processing functions, the volume of information transmitted between the display and the main terminal has multiplied dramatically. Data transmission rates for 3G handsets now typically exceed 90 megabits per second (Mbps) for quarter video graphics array (QVGA) and 460 Mbps for video graphics array (VGA) displays. Moreover, this data must be passed through a narrow connection using serial wiring between the display and the main terminal, but there are several challenges associated with conventional serial technology such as high power consumption and electromagnetic interference (EMI) noise.
NEC Electronics' advanced Mobile CMADS solves the problems of serial interface technology. By decreasing the number of data transmission lines between the narrow LCD and main handset to 4 lines (as compared to 18 lines for parallel technology), circuit board design is simplified, facilitating creative handset designs such as swivel-type models. Mobile CMADS also reduces EMI noise by approximately 35%, and lowers power consumption levels to the equivalent of parallel transmission levels, while still delivering the fast data transmission rates that are only possible with serial technology.
NEC's implementation of the uPD161833M and uPD161605M LCD driver ICs is expected to be the first step in a wider industry adoption of the Mobile CMADS technology and products. NEC Electronics will continue to promote Mobile CMADS by implementing it in the company's MP211 application processor, and advancing it among mobile handset manufacturers and other semiconductor companies as a global industry standard.
For more information about NEC Electronics' LCD driver ICs and Mobile CMADS technology, please visit www.necel.com/partic/display/english/displaydriver/index.html .
About NEC Electronics
NEC Electronics Corporation specializes in system LSI semiconductor products for a wide range of applications in the computing, networking, mobile, automotive and digital consumer markets. The company was spun off from NEC Corporation in 2002 and listed on the Tokyo Stock Exchange in 2003. NEC Electronics provides design, development and manufacturing support through its staff of approximately 24,000, from its headquarters in Kawasaki, Japan and 26 worldwide subsidiaries. For more information, please visit www.necel.com/ .
Mobile CMADSTM (Mobile CMADS 1000) Specifications
Transmission method: Current-mode differential transmission
Data transfer rate: 70 Mbps/pair
Number of data signal lines: 2 (1 pair) mode/4 lines (2 pairs)
Signal amplitude: 85 mVpp
Transmission circuit format: N-ch open-drain transistor
Power consumption per pair: 2 to 3 mW
Major specifications of uPD161833M and uPD161605M
uPD161833M uPD161605M
Image data transmission Mobile CMADSTM Mobile CMADSTM
method Current-mode Current-mode
differential differential
transmission method transmission method
Image data transmission 69 Mbps/pair (max.) 45 Mbps/pair (max.)
rate
Number of image data 4 lines (2 pairs)/RGB: 2 lines (1 pair)/RGB:
signal lines 18 bits 18 bits
Image data signal 85 mVpp (min.) 85 mVpp (min.)
amplitude
Supported resolution QVGA QCIF+
Supported TFT-LCD LTPS Amorphous
Transmission output N-ch open-drain N-ch open-drain
circuit format transistor transistor
Source: NEC Electronics Corporation
CONTACT: Japan and Asia, Sophie Yamamoto of NEC Electronics Corporation,
+81-44-435-1676, or sophie.yamamoto@necel.com; or Europe, Oliver
+Luettgen of
NEC Electronics (Europe) GmbH, +49-211-2503-1469, or oliver.luettgen@eu.necel.com
Web Site: www.necel.com/
