Power-Supply Selection Header - Renesas RL78/G24 User Manual

RL78/G24 Fast Prototyping Board
5.14

Power-Supply Selection Header

The operating power (VDD) of the evaluation MCU can be changed to supply from the emulator or external
power, and to 5 V or 3.3 V with the use of a header (J16). Only change the jumper setting of J16 while power
is not being supplied.
1-2 of J16 being short-circuit selects a 5-V power supply. This is the default setting as shipped (Figure
•
5-5).
2-3 of J16 being short-circuit selects a 3.3-V power supply (Figure 5-6).
•
J16 being open-circuit selects supply from the emulator or external power. (Figure 5-7).
•
selection header (J16)
Figure 5-5 Setting of the Header to Select a 5-V Power Supply (Top Side)
selection header (J16)
2-3 short-circuit: 3.3 V
Figure 5-6 Setting of the Header to Select a 3.3-V Power Supply (Top Side)
R20UT5091EJ0100 Rev. 1.00
Apr.16.23
Power-supply
1-2 short-circuit：5 V
Power-supply
5. User Circuits
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