RA4L1 datasheet(14/125 Pages) RENESAS

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Table 1.16

Pin functions (3 of 4)

Function

Signal

I/O

Description

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_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 pin

SSILRCK0/SSIFS0

I/O

LR clock/frame synchronization pin

SSITXD0

Output

Serial data output pin

SSIRXD0

Input

Serial data input pin

AUDIO_CLK

Input

External clock pin for audio (input oversampling clock)

Analog power supply

AVCC0

Input

Analog voltage supply pin. This is used as the analog power supply

for the respective modules. Supply this pin with the same voltage as

the VCC pin.

AVSS0

Input

Analog ground pin. This is used as the analog ground for the

respective modules. Supply this pin with the same voltage as the

VSS pin.

VREFH0

Input

Analog reference voltage supply pin for the ADC12. Connect this pin

to AVCC0 when not using the ADC12.

VREFL0

Input

Analog reference ground pin for the ADC12. Connect this pin to

AVSS0 when not using the ADC12.

ADC12

AN0n

Input

Input pins for the analog signals to be processed by the A/D

converter.

ADTRG0

Input

Input pins for the external trigger signals that start the A/D

conversion, active-low.

DAC12

DA0

Output

Output pin for the analog signals processed by the D/A converter.

ACMPLP

VCOUT

Output

Comparator output pin

CMPREF0, CMPREF1

Input

Reference voltage input pins

CMPIN0, CMPIN1

Input

Analog voltage input pins

SLCDC

VL1, VL2, VL3, VL4

I/O

Voltage pin for driving the LCD

CAPH, CAPL

I/O

Capacitor connection for the LCD controller/driver

COM0 to COM7

Output

Common signal output pins for the LCD controller/driver

SEG0 to SEG51

Output

Segment signal output pins for the LCD controller/driver

RA4L1 Datasheet

1. Overview

R01DS0447EJ0131 Rev.1.31

May 26, 2026

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