Power/Reset Pins; Power-On/Off Sequence; Table 2.1 External Power Supply - Renesas R-IN32M4-CL3 User Manual

R-IN32M4-CL3 User's Manual: Board design edition
2.

Power/Reset Pins

2.1

Power-On/Off Sequence

Table 2.1 lists external power supplies to R-IN32M4-CL3. In addition, Figure 2.1 and Figure 2.3 show the power-on/off
sequence.
There is no particular rule for the power-on sequence. We recommend supplying external power voltage VDD11 first and
then supplying external power voltage VDD33. On the other hand, when turning off the power, disconnect VDD33, then
VDD11.
If VDD33 is supplied first, note that the I/O modes of the I/O buffers are not fixed and outputs become undefined over
the period between VDD33 and VDD11 rising to their thresholds.
3.3 V must be applied to the input pins only after the power supply voltages have been applied.

Table 2.1 External Power Supply

External Power Supply
VDD33
VDD25
VDD11
R18UZ0074EJ0100
Dec 24, 2019
Voltage [V]
3.3  0.165
2.5  0.125
1.15  0.06
2. Power/Reset Pins
External Pin Name
VDD33
VDDREG_33
AVDDREG_33
VDD25A
VDD11
VDD11A
PLL_VDD
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