LC74401E Description
EN 4872A CMOS IC LC74401E, 74402, 74402E PIP Controllers Overview The LC74401E, LC74402, and LC74402E are memory controllers for TV set and VCR PIP (picture in picture) systems. Since these LSIs include three D/A converter circuits, a ponent PIP system can be constructed by bining one of these LSIs with memory and an A/D converter such as the LC7480.
LC74401E Key Features
- Horizontal resolution: 600 TV lines-1
- Three D/A converters (for the Y, R-Y, and B-Y signals)
- High image quality is supported by vertical filter
- I2C bus controlled
- Built-in PLL circuit (requires an external LPF)
- Supports NTSC, PAL, and multiple (NTSC-PAL)
- External control functions (only provided by the
- 8-bit D/A converter (PWM): Six pins
- General-purpose ports: Four pins
- Sub-screen specifications