Some currencies have a minimum amount for settlements
If you send less than the minimum, when you process further transactions until the settlement is the minimum, once the minimum is reached you will see the total value settled into your account.
Examples of minimums below
|Coin Name||Minimum Amount|
|ETC / LSK / EXP||1|
|BURST / NXT / BCY||5|
Please mind the network fee when making the transaction, 0.5 ETH after the network fee will be .49 ETH, if the minimum limit is 0.5 ETH the .49 ETH will not settle until more ETH is sent. This apply to all coins with a minimum deposit limit.
Once the deposit address is funded with enough balance the whole amount will be automatically settled to your USDC account.