Current Measurement Option—You may cut the trace below header JP1 on the bottom side of the Prototyping Board and install a 1 × 2 header strip from the Develop- ment Kit to allow you to use an ammeter across the pins to measure the current drawn from the +5 V supply. Similarly, you may cut the trace below header JP2 on the bottom side of the Prototyping Board and install a 1 × 2 header strip from the Development Kit to allow you to use an ammeter across the pins to measure the current drawn from the +3.3 V supply.

Backup Battery—A 2032 lithium-ion battery rated at 3.0 V, 220 mA·h, provides battery backup for the RCM4000 SRAM and real-time clock.

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RabbitCore RCM4000

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Digi user manual RabbitCore RCM4000