ADP5300 : Default mode


I have a question regarding the default state of the SYNC/MODE pin ot the ADP5300 : is there an internal pull down/up resistor to force a default mode ?
This is to know the mode of the IC when the board is powered in order to flash the mcu firmware (by default mcu gpios are configured as inputs, high impedance).

If there is no internal pull down/up then it would perhaps be better to add an external one.