DS1801+ datasheet by Maxim Integrated Products

DS1801+ Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the DS1801+?
  The DS1801+ requires careful layout and routing to ensure proper operation. Maxim recommends following the layout guidelines in the application note AN1891, which includes tips on component placement, trace routing, and decoupling capacitor placement.
• How do I ensure the DS1801+ is properly powered and decoupled?
  The DS1801+ requires a stable power supply and proper decoupling to operate correctly. Ensure that the power supply is within the recommended voltage range (2.7V to 5.5V), and use a 0.1uF decoupling capacitor between VCC and GND, placed as close to the device as possible.
• What is the maximum current that can be sunk or sourced by the DS1801+?
  The DS1801+ can sink or source up to 10mA of current per output pin, but the total current should not exceed 50mA. Exceeding this limit may cause the device to overheat or malfunction.
• How do I program the DS1801+ using a microcontroller?
  The DS1801+ can be programmed using a microcontroller through the I2C interface. The microcontroller should send the appropriate commands and data to the DS1801+ according to the I2C protocol, and the DS1801+ will respond with the requested data or acknowledge the write operation.
• What is the purpose of the WP pin on the DS1801+?
  The WP (Write Protect) pin is used to prevent accidental changes to the DS1801+ configuration. When the WP pin is tied to VCC, the device is in write-protect mode, and any attempts to write to the device will be ignored. When the WP pin is tied to GND, the device is in normal operation mode.