R7KA8D2AFDCAC datasheet(13/292 Pages) RENESAS

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1.5

Pin Functions

Table 1.15

Pin functions (1 of 7)

Function

Signal

I/O

Description

Power supply

VCC_01 to VCC_10,

VCC2_11 to VCC2_15

Input

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

same numbered VSS_01 to VSS_15 by a 0.1-µF capacitor. The capacitor should

be placed close to the pin.

In the SiP product, connect VCC2_11 to VCC2_15 to the 1.8V system power

supply.

VCC2_16 to

VCC2_19

Input

Dedicated power supply pin for the SiP product. Connect it to the 1.8V system

power supply. Connect this pin to the same numbered VSS_16 to VSS_19 by a

0.1-µF capacitor. The capacitor should be placed close to the pin.

VCC_DCDC

Input

Switching regulator power supply pin.

VLO

I/O

Switching regulator pin.

VCL0 to VCL11

Input

Connect this pin to the same numbered VSS0 to VSS11 pin by the smoothing

capacitor used to stabilize the internal power supply.

Place the capacitor close to the pin.

VBATT

Input

Battery Backup power pin

VSS_01 to VSS_15,

VSS0 to VSS11,

VSS_DCDC

Input

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

VSS_16 to VSS_19,

VSS

Input

Dedicated ground pin for the SiP product. Connect it to the system power supply (0

V).

Vpp

Input

Power supply pin for serial Flash programming operation. See the ISSI serial Flash

IS25WX064 datasheet for the details. If not used, the Vpp pin can be floated. Note

that the deep power down current varies depending on the power supply status of

the Vpp pin.

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

EXCIN

Input

External sub-clock input

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.

PUP

Input

Connect to VCC2 through a resistor.

CAC

CACREF

Input

Measurement reference clock input pin

On-chip emulator

TMS

Input

On-chip emulator or boundary scan pins

TDI

Input

TCK

Input

TDO

Output

TCLK

Output Output clock for synchronization with the trace data

TDATA0 to TDATA3

Output Trace data output

SWO

Output Serial wire trace output pin

SWDIO

I/O

Serial wire debug data input/output pin

SWCLK

Input

Serial wire clock pin

RA8D2 Datasheet

1. Overview

R01DS0493EJ0130 Rev.1.30

Feb 27, 2026

Page 13 of 292

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