User`s manual

72 RabbitCore RCM3000
The drain on the battery by the RCM3000 is typically 5 µA when no other power is sup-
plied. If a 165 mA·h battery is used, the battery can last more than 3 years:
The actual life in your application will depend on the current drawn by components not on
the RCM3000 and the storage capacity of the battery. Note that the shelf life of a lithium ion
battery is ultimately 10 years. The RCM3000 does not drain the battery while it is powered
up normally.
D.1.2 Reset Generator
The RCM3000 uses a reset generator to reset the Rabbit 3000 microprocessor when the volt-
age drops below the voltage necessary for reliable operation. The reset occurs between
2.85 V and 3.00 V, typically 2.93 V. The RCM3000 has a reset output, pin 1 on header J2.
D.2 Optional +5 V Output
The RCM3000 Series RabbitCore boards have an onboard charge pump that provides the
+5 V needed by the RealTek Ethernet chip.
There is provision to have the +5 V supply available on pin 33 of header J2, but the default
configuration for the 0 Ω surface-mounted jumpers does not bring out this option. Consult
your Z-World or Rabbit Semiconductor sales representative for more information on
quantity orders for this option. If the +5 V output option is enabled, you will be able to
draw up to 40 mA.
165 mA·h
5 µA
------------------------
3.7 years.=