DS1644-150 datasheet by Dallas Semiconductor

DS1644-150 Frequently Asked Questions (FAQs)

• What is the maximum number of devices that can be connected to a single 1-Wire bus?
  The maximum number of devices that can be connected to a single 1-Wire bus is 256, as each device has a unique 64-bit ROM code.
• How does the DS1644-150 handle power-on reset?
  The DS1644-150 has a built-in power-on reset circuit that ensures the device is in a known state after power-up. The device resets to a default state, and the 1-Wire bus is released within 500 ms of power-up.
• What is the typical current consumption of the DS1644-150?
  The typical current consumption of the DS1644-150 is 1.5 mA during active operation, and 1 μA in standby mode.
• Can the DS1644-150 be used in a multi-drop configuration?
  Yes, the DS1644-150 can be used in a multi-drop configuration, where multiple devices are connected to a single 1-Wire bus. Each device can be addressed individually using its unique ROM code.
• How does the DS1644-150 handle data retention during power-down?
  The DS1644-150 has a non-volatile memory that retains data even when power is removed. The device can retain data for up to 10 years at room temperature.