RZSLASHA1M datasheet(13/137 Pages) RENESAS

13 / 137 page

R01DS0479EJ0100 Rev.1.00

Page 13 of 137

Dec. 25, 2024

RZ/A1H Group, RZ/A1M Group

2. Pin

2.1

Pin Functions

2.1.1

Pin Function of Functional Blocks

Table 2.1

List of Pin Functions

Classification

Symbol

I/O

Name

Function

Power supply

Vcc

Power supply

Power supply pins. All the Vcc pins must

be connected to the system power

supply. This LSI does not operate

correctly if there is a pin left open.

Vss

Ground

Ground pins. All the Vss pins must be

connected to the system power supply (0

V). This LSI does not operate correctly if

there is a pin left open.

PVcc

Power supply for I/O

circuits

Power supply for I/O pins. All the PVcc

pins must be connected to the system

power supply. This LSI does not operate

correctly if there is a pin left open.

PLLVcc

Power supply for PLL

Power supply for the on-chip PLL

oscillator.

Clock

EXTAL

External clock

Connected to a crystal resonator. An

external clock signal may also be input to

the EXTAL pin.

XTAL

Crystal

Connected to a crystal resonator.

CKIO

System clock output

Supplies the system clock to external

devices.

AUDIO_CLK

External clock for

audio

Input pin of external clock for audio. A

clock input to the divider is selected from

an oscillation clock input on this pin or

pins AUDIO_X1 and AUDIO_X2.

AUDIO_X1

Crystal resonator/

external clock for

audio

Pins connected to a crystal resonator for

audio. An external clock can be input on

pin AUDIO_X1. A clock input to the

divider is selected from an oscillation

clock input on these pins or the

AUDIO_CLK pin.

AUDIO_X2

AUDIO_XOUT

AUDIO_X1 clock

output

Output for the on-chip crystal oscillator on

AUDIO_X1 or the external clock signal.

AUDIO_XOUT2

AUDIO_X1 divided-

by-two clock output

Output for the on-chip crystal oscillator on

AUDIO_X1 or the external clock signal

after frequency division of the selected

signal by two.

AUDIO_XOUT3

AUDIO_X1 divided-

by-three clock output

Output for the on-chip crystal oscillator on

AUDIO_X1 or the external clock signal

after frequency division of the selected

signal by three.

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