RA4E2 datasheet(9/91 Pages) RENESAS

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1.5

Pin Functions

Table 1.14

Pin functions (1 of 3)

Function

Signal

I/O

Description

Power supply

VCC

Input

Power supply pin. Connect it to the system power supply. Connect

this pin to VSS by a 0.1-µF capacitor. The capacitor should be

placed close to the pin.

VCL

I/O

Connect this pin to the VSS pin by the smoothing capacitor used to

stabilize the internal power supply. Place the capacitor close to the

pin.

VSS

Input

Ground pin. Connect it to the system power supply (0 V).

Clock

XTAL

Output

Pins for a crystal resonator. An external clock signal can be input

through the EXTAL pin.

EXTAL

Input

XCIN

Input

Input/output pins for the sub-clock oscillator. Connect a crystal

resonator between XCOUT and XCIN.

XCOUT

Output

CLKOUT

Output

Clock output pin

Operating mode control

Input

Pin for setting the operating mode. The signal level on this pin must

not be changed during operation mode transition on release from

the reset state.

System control

RES

Input

Reset signal input pin. The MCU enters the reset state when this

signal goes low.

CAC

CACREF

Input

Measurement reference clock input pin

On-chip emulator

SWDIO

I/O

Serial wire debug data input/output pin

SWCLK

Input

Serial wire clock pin

Interrupt

NMI

Input

Non-maskable interrupt request pin

IRQn

Input

Maskable interrupt request pins

IRQn-DS

Input

Maskable interrupt request pins that can also be used in Deep

Software Standby mode

GPT

GTETRGA, GTETRGB,

GTETRGC, GTETRGD

Input

External trigger input pins

GTIOCnA, GTIOCnB

I/O

Input capture, output compare, or PWM output pins

GTADSM0, GTADSM1

Output

A/D conversion start request monitoring output pins

GTIU

Input

Hall sensor input pin U

GTIV

Input

Hall sensor input pin V

GTIW

Input

Hall sensor input pin W

GTOUUP

Output

3-phase PWM output for BLDC motor control (positive U phase)

GTOULO

Output

3-phase PWM output for BLDC motor control (negative U phase)

GTOVUP

Output

3-phase PWM output for BLDC motor control (positive V phase)

GTOVLO

Output

3-phase PWM output for BLDC motor control (negative V phase)

GTOWUP

Output

3-phase PWM output for BLDC motor control (positive W phase)

GTOWLO

Output

3-phase PWM output for BLDC motor control (negative W phase)

AGT

AGTEEn

Input

External event input enable signals

AGTIOn

I/O

External event input and pulse output pins

AGTOn

Output

Pulse output pins

AGTOAn

Output

Output compare match A output pins

AGTOBn

Output

Output compare match B output pins

RA4E2 Datasheet

1. Overview

R01DS0413EJ0150 Rev.1.50

May 29, 2026

Page 9 of 91

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