R7KA8M2AFDCAM datasheet(16/295 Pages) RENESAS

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Table 1.15

Pin functions (4 of 7)

Function

Signal

I/O

Description

SCI

SCKn

I/O

Input/output pins for the clock (clock synchronous mode)

RXDn

Input

Input pins for received data (asynchronous mode/clock synchronous mode)

TXDn

Output Output pins for transmitted data (asynchronous mode/clock synchronous mode)

CTSn_RTSn

I/O

Input/output pins for controlling the start of transmission and reception

(asynchronous mode/clock synchronous mode), active-low.

CTSn

Input

Input for the start of transmission.

DEn

Output Driver enable signal for RS-485

SCLn

I/O

Input/output pins for the IIC clock (simple IIC mode)

SDAn

I/O

Input/output pins for the IIC data (simple IIC mode)

SCKn

I/O

Input/output pins for the clock (simple SPI mode)

MISOn

I/O

Input/output pins for slave transmission of data (simple SPI mode)

MOSIn

I/O

Input/output pins for master transmission of data (simple SPI mode)

SSn

Input

Chip-select input pins (simple SPI mode), active-low

IIC

SCLn

I/O

Input/output pins for the clock

SDAn

I/O

Input/output pins for data

I3C

I3C_SCL0

I/O

Input/output pins for the clock

I3C_SDA0

I/O

Input/output pins for data

SPI

RSPCKA, RSPCKB

I/O

Clock input/output pin

MOSIA, MOSIB

I/O

Input or output pins for data output from the master

MISOA, MISOB

I/O

Input or output pins for data output from the slave

SSLA0, SSLB0

I/O

Input or output pin for slave selection

SSLA1 to SSLA3,

SSLB1 to SSLB3

Output Output pins for slave selection

CANFD

CRXn

Input

Receive data

CTXn

Output Transmit data

USBFS

VCC_USB

Input

Power supply pin

VSS_USB

Input

Ground pin

USB_DP

I/O

D+ pin of the USB on-chip transceiver. Connect this pin to the D+ pin of the USB

bus.

USB_DM

I/O

D- pin of the USB on-chip transceiver. Connect this pin to the D- pin of the USB

bus.

USB_VBUS

Input

USB cable connection monitor pin. Connect this pin to VBUS of the USB bus.

The VBUS pin status (connected or disconnected) can be detected when the USB

module is operating as a function controller.

USB_EXICEN

Output Low-power control signal for external power supply (OTG) chip

USB_VBUSEN

Output VBUS (5 V) supply enable signal for external power supply chip

USB_OVRCURA,

USB_OVRCURB

Input

Connect the external overcurrent detection signals to these pins. Connect the

VBUS comparator signals to these pins when the OTG power supply chip is

connected.

USB_OVRCURA-DS,

USB_OVRCURB-DS

Input

Overcurrent pins for USBFS that can also be used in Deep Software Standby

mode 1. Connect the external overcurrent detection signals to these pins. Connect

the VBUS comparator signals to these pins when the OTG power supply chip is

connected.

USB_ID

Input

Connect the MicroAB connector ID input signal to this pin during operation in OTG

mode

RA8M2 Datasheet

1. Overview

R01DS0438EJ0130 Rev.1.30

Feb 27, 2026

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