MC6847P - Motorola

MC6847P Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the MC6847P can handle?
  The MC6847P can handle clock frequencies up to 2 MHz, but it's recommended to operate it at 1.79 MHz for optimal performance.
• How do I properly initialize the MC6847P?
  To properly initialize the MC6847P, you need to reset the chip by pulling the RESET pin low for at least 100 ns, then release it and wait for the oscillator to stabilize before accessing the video memory.
• What is the purpose of the VSYNC and HSYNC pins?
  The VSYNC (Vertical Sync) and HSYNC (Horizontal Sync) pins are used to synchronize the video output with the display device. VSYNC is used to indicate the start of a new frame, while HSYNC is used to indicate the start of a new line.
• How do I generate a stable video signal with the MC6847P?
  To generate a stable video signal, you need to ensure that the clock frequency is stable, the video memory is properly initialized, and the HSYNC and VSYNC pins are properly configured. You may also need to add external components such as resistors and capacitors to filter the video signal.
• Can I use the MC6847P with a modern LCD display?
  The MC6847P is designed to generate a composite video signal, which may not be compatible with modern LCD displays that typically require a digital video signal. You may need to use an additional component such as a video encoder or a scan converter to convert the composite video signal to a digital signal compatible with the LCD display.