May 2003 FPD94128 528-Ch Small Format a-Si AMLCD Controller / Column Driver with Integrated Frame Buffer General Description The FPD94128 is a Controller/Column Driver for use in low-power small format color TFT LCD displays. The FPD94128 contains a frame buffer, display refresh controller, programmable gamma reference, 528-channel column driver, and a backlight intensity modulator. The FPD94128 and the companion FPD93140 (gate driver with power supply) form a complete 2-chip solution for driving TFT LCD panels containing up to 176RGB x 240 pixels with versatile mounting and scan options. 262,144 colors are supported in 18-bit color mode, and 12-bit, 9-bit, and 3-bit color modes are provided for reduced power. Data may be loaded via serial, 8/16-bit parallel, and video interfaces (18-bit NTSC R’G’B’ or 8/16-bit BT.601 4:2:2 Y’CbCr). The video frame rate and the refresh rate of the LCD panel are independent. The LCD panel refresh rate and the polarity inversion interval are programmable. The LCD panel refresh rate may be up to 125 fps. Two partial-display regions, reduced-color modes, and an automatic backlight control are provided to minimize total system power consumption. The FPD94128 requires no external components. Parts are provided as gold bumped flip-chip devices. The nominal range for VDD is [1.8V-3.3] V, and the nominal range for the LCD drive voltage is [3.3-5.5] V. Features n Video port accepts 18-bit video (NTSC R’G’B’) or 8/16-bit video (BT.601 Y’CbCr 4:2:2) at up to 150 QCIF fps (4 Mpix/s). n CPU port accepts packed graphics data (1.1.1, 3.3.2, 4.4.4, 5.6.5, 6.6.6 RGB) via SPI or parallel 8/16-bit (80x/68x) interfaces n Internal frame buffer supports up to 176RGB x 240 (18-bit pixels). n Flexible mounting/scan options provide for symmetric display layout n Programmable for smaller display resolutions such as 176RGB x 220, 144RGB x 176, 132RGB x 176, etc. n No external components. n Quiescent power ~2.5mW in 18-bit mode n Programmable color-depth allows selection of 3, 9, 12, or 18-bit color modes to further reduce power. n Power-saving automatic backlight intensity reduction based on statistics of image data or by direct system control. n Two-region partial display option for ultra-low power in handset stand-by mode. n Frame, line, or n-line inversion modes. n Programmable gamma curve control allows easy adjustment for optimum gray level placement and minimum flicker. n Programmable line rate supports up to 125Hz display refresh rate. n Separate addressing of two memory regions allows simultaneous loading of both streaming video and graphic/icon data n Versatile auto-increment addressing modes allow horizontal or vertical raster scanning. n Factory-calibrated internal clock provides accurate refresh control with no external components. Ordering Information NSID Function Package FPD93140 Gate Driver (see Datasheet) COG FPD94128 Column Driver COG © 2003 National Semiconductor Corporation DS200729 www.national.com FPD94128 528-Ch Small Format a-Si AMLCD Controller / Column Driver with Integrated Frame Buffer ADVANCE INFORMATION FPD94128 Block Diagrams Typical Application 20072929 www.national.com 2 FPD94128 Block Diagrams (Continued) FPD94128 Block Diagram 20072930 3 www.national.com FPD94128 528-Ch Small Format a-Si AMLCD Controller / Column Driver with Integrated Frame Buffer Notes LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Americas Customer Support Center Email: [email protected] Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Support Center Email: [email protected] National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: [email protected] Tel: 81-3-5639-7560 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.