Advanced Functions; How To Connect An External Power Supply; Power Via Vbat_In On J4 Connector; Power Via Vbat_Core On St3 Connector - Renesas RYZ014A User Manual

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RYZ014AAA

RYZ014A Evaluation Kit

Default Jumpers and Switch Positions

Figure 36.

3. Advanced Functions

The external power supply can be connected at the Power Input connector J4 (VBAT_IN). When the supply

voltage at VBAT_IN is above 1.6 V, the module power VBAT_CORE automatically switches from the

3V3_AUX to the VBAT_IN supply.

Note: J4 is a 2-way, 1-row, right angle PCB terminal block header. To connect to J4, a 3.81-mm pitch, 2-

way PCB terminal block can be used.

The external power supply can be connected at ST3 VBATT_CORE for the module VBAT1 to supply and

measure power.

Strap ST3 can also be used to connect a Series Current Meter. The module current must be measured from

this point otherwise there is a risk of measuring additional current from the host board.

If a current measuring power supply is used, then the power should be connected to the strap ST3.

When using RYZ014AAA on a remote setup, it may be handy to have the means to reset the board remotely

via the host PC. For this, RYZ014AAA can be reset via one of the UART1 ports available on the USB

connector

To enable remote reset, fit a 10-kOhm resistor on R35.

R12UM0041EU0102 Rev.1.02

Page 27 of 33

Jun.01.21

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