4.3.2 Board Power Header

The J202 header enables connection to the ATmega328P Xplained Mini power system.

Table 4-3. J202 Power Header
J202 PinSignalDescription
1NC
2VCC_TARGETThe power source selected for the target (selected by J301)
3RESET_SENSEThis is a RESET signal monitored by the mEDBG. If pulled low, the target RESET line will be pulled low by the mEDBG. The ATmega32U4 internal pull-up is enabled. This signal is not available during debugging.
4VCC_P3V3The 3.3V regulator output
5VCC_P5V0The selected power source (VIN or VBUS selected by J300)
6GND
7GND
8VCC_VINThe external power source connection