Renesas EK-RA6M3 Getting Started page 24

Renesas RA Family Getting Started with Low Power Applications for RA6 and
RA4 Groups
Unused IO ports in LPM other than in Deep Software Standby mode should be put into input mode before
entering the LPM by using the g_bsp_pin_lpm_cfg, which is generated from the RA6M3-EK-
LPM.pincfg. The following code fragments highlight the steps in the application to reduce MCU power
consumption before placing MCU in LPM and restoring the IO port settings after waking it up.
Figure 20. Put Unused IO ports in Input Mode
Open and configure the LPM.
Figure 21. Open and Configure the LPM
Place the MCU in the LPM.
Figure 22. Place the MCU in the LPM
Put IO port in normal mode by configuring them using the g_bsp_pin_cfg generated from the RA6M3-
EK.pincfg after exiting from LPM.
Figure 23. Place IO Ports in Normal Mode
In this application example for the Deep Software Standby mode, the IO port must be released from IOKEEP
state after MCU reset.
R11AN0471EU0104 Rev.1.04 Page 24 of 40
Oct.1.21