Renesas RA4 Series User Manual

Renesas RA Microcontrollers EK-RA4M1 v1 – User's Manual
R20UT4579EU0100 Rev.1.00 Page 28 of 32
Oct.02.19
5.6.5.2 VCL
By default, the Main MCU pin VCL is connected to reference capacitor C17. To
connect this pin to the MCU pin header J2, solder bridge E28 must be closed. To
disconnect the reference capacitor C17, copper jumper E29 must be open.
Figure 30. VCL and VCL Capacitor
5.6.5.3 VCC_USB_LDO
By default, the Main MCU pin VCC_USB_LDO is connected to the +3V3 MCU supply
voltage. Alternatively, this pin may be connected to MCU pin header J3. To do this, copper
jumper E7 must be open and copper jumper E13 must be closed.
Figure 31. VCC_USB_LDO Circuit
5.6.5.4 VCC_USB
By default, the Main MCU pin VCC_USB is connected to the +3V3 MCU supply voltage. Alternatively, this
pin may be connected to MCU pin header J1. To do this, the copper jumper E8 must be open and the copper
jumper E14 must be closed.

Renesas RA4 Series Specifications

General

Brand	Renesas
Model	RA4 Series
Category	Motherboard
Language	English