Overview: .. Ordering number : ENN*7023 CMOS IC LC74982W
LCD TV Scan Converter IC
Preliminary Overview
The LC74982W is an LCD display scan converter IC that converts NTSC and PAL TV signals to XGA resolution. The video signal-processing circuits required to implement an LCD TV set can be easily formed by bining this IC with a digital decoder, a microcontroller, and an LCD panel. Since this IC does not require an external frame memory for resolution conversion, it can contribute to minimizing total costs. As additional functionality, it also provides inputs for personal puter video (up to XGA) and digital TV (480p/480i). Since LC74982W operation is based on expansion (resolution increasing) processing, depending on the input resolution, it can also support use of, for example, 800 × 600 and 800 × 480 dot resolution LCD panels. Thus the LC74982W can be used in a wide range of applications. • Built-in γ correction (LUT technique. Each 8-bit R, G, and B signal is independently programmable.) • Built-in OSD function (8 colors, 253 characters) • I2C bus interface • Constant frame-rate processing (identical frame periods in the input and output signals) adopted so that no external memory is required. Specifications
• Supply voltage: 3.3 V (input pins are 5 V tolerant) • Maximum operating frequency: 65.
