Hardware Manual

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TESSERA TECHNOLOGY INC.
Connect a VBAT_EHC or electric double-layer capacitor to the EHC's battery
(TP9(+)TP10 (-).
Connect MCU_VCC (10μF) supplied with C2 (10μF).
The supply VSC_VCC EHC(EHC) is limited to 4.0V/10mA or less.
The EHC' VCC_SU" (storage capacitor) is connected to a capacitor of about 100μF.
For more information on starting up using EHC, see section 4.3 Energy harvesting start-
up mode.
3.5.2. Software settings
The firmware definition expression SYSTEM_CFG_EHC_MODE must be set to 1 (EHC
mode). This definition expression is defined in the r_core_cfg.h file.
The location of the r_core_cfg.h file can be found, for example, in the sample code
RE01B Group Bluetooth Low Energy sample code (using CMSIS Driver Package) AN5606
published by Renesas Electronics, It is stored under Device > Config.
Figure 3-13 r_core_cfg.h File EH Settings