RA4M3 datasheet(11/92 Pages) RENESAS

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Table 1.14

Pin functions (3 of 4)

Function

Signal

I/O

Description

SPI

RSPCKA

I/O

Clock input/output pin

MOSIA

I/O

Input or output pins for data output from the master

MISOA

I/O

Input or output pins for data output from the slave

SSLA0

I/O

Input or output pin for slave selection

SSLA1 to SSLA3

Output

Output pins for slave selection

CAN

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.

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

QSPI

QSPCLK

Output

QSPI clock output pin

QSSL

Output

QSPI slave output pin

QIO0 to QIO3

I/O

Data0 to Data3

SSIE

SSIBCK0

I/O

SSIE serial bit clock pins

SSILRCK0/SSIFS0

I/O

LR clock/frame synchronization pins

SSITXD0

Output

Serial data output pin

SSIRXD0

Input

Serial data input pin

SSIDATA0

I/O

Serial data input/output pins

AUDIO_CLK

Input

External clock pin for audio (input oversampling clock)

SDHI/MMC

SD0CLK

Output

SD clock output pins

SD0CMD

I/O

Command output pin and response input signal pins

SD0DAT0 to SD0DAT7

I/O

SD and MMC data bus pins

SD0CD

Input

SD card detection pins

SD0WP

Input

SD write-protect signals

RA4M3 Datasheet

1. Overview

R01DS0368EJ0120 Rev.1.20

Dec 2, 2020

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