TLC549CD datasheet by Texas Instruments

TLC549CD Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the TLC549CD can handle?
  The TLC549CD can handle clock frequencies up to 4 MHz, but it's recommended to limit it to 1 MHz for reliable operation.
• How do I ensure accurate conversions with the TLC549CD?
  To ensure accurate conversions, make sure to follow the recommended analog input voltage range (0-5V), use a stable reference voltage, and minimize noise on the analog input and reference voltage lines.
• What is the purpose of the RD/WR pin, and how do I use it?
  The RD/WR pin is used to control the direction of data transfer between the TLC549CD and the microcontroller. When RD/WR is low, the TLC549CD is in read mode, and when it's high, it's in write mode.
• How do I handle the TLC549CD's power-on reset (POR) and brown-out reset (BOR) features?
  The TLC549CD has a built-in POR and BOR circuitry that resets the device during power-up or brown-out conditions. To handle this, ensure that your system design can tolerate the brief reset period and that your microcontroller is designed to handle the reset signal.
• What is the recommended layout and routing for the TLC549CD's analog and digital signals?
  To minimize noise and ensure reliable operation, keep analog and digital signals separate, use a ground plane, and route analog signals away from digital signals. Also, use a decoupling capacitor (e.g., 0.1uF) between VCC and GND.