MAX7219ENG datasheet by Maxim Integrated Products

MAX7219ENG Frequently Asked Questions (FAQs)

• What is the maximum clock frequency for the MAX7219ENG?
  The maximum clock frequency for the MAX7219ENG is 10MHz.
• How do I initialize the MAX7219ENG?
  The MAX7219ENG can be initialized by sending a shutdown command (0x0C) followed by a display-test command (0x0F) and then setting the brightness and scan-limit registers.
• What is the purpose of the No-Op command (0x00) in the MAX7219ENG?
  The No-Op command (0x00) is used to synchronize the data transmission and can be used to insert a delay between commands.
• How do I adjust the brightness of the display using the MAX7219ENG?
  The brightness of the display can be adjusted by writing a value between 0x00 (minimum brightness) and 0x0F (maximum brightness) to the brightness register (0x0A).
• What is the maximum number of digits that can be driven by the MAX7219ENG?
  The MAX7219ENG can drive up to 8 digits.