S124 datasheet(10/98 Pages) RENESAS

10 / 98 page

R01DS0264EU0100 Rev.1.00

Page 10 of 95

Feb 23, 2016

S124

1. Overview

1.5

Pin Functions

Table 1.14

Pin functions (1/3)

Function

Signal

I/O

Description

Power supply

VCC

Input

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

to VSS by a 0.1-μF capacitor. The capacitor should be placed close to the

pin.

VCL

Input

Connect this pin to the VSS pin by the smoothing capacitor used to stabilize

the internal power supply. Place the capacitor close to the pin.

VSS

Input

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

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

CLKOUT

Output

Clock output pin.

Operating mode control

Input

Pins for setting the operating mode. The signal levels on these pins must

not be changed during operation mode transition at the time of release from

the reset state.

System control

RES

Input

Reset signal input pin. The MCU enters the reset state when this signal

goes low.

CAC

CACREF

Input

Measurement reference clock input pin.

On-chip debug

SWDIO

I/O

Serial Wire debug Data Input/Output pin.

SWCLK

Input

Serial Wire Clock pin.

Interrupt

NMI

Input

Non-maskable interrupt request pin.

IRQ0 to IRQ7

Input

Maskable interrupt request pins.

GPT

GTETRGA,

GTETRGB

Input

External trigger input pin.

GTIOC0A to

GTIOC6A,

GTIOC0B to

GTIOC6B

I/O

Input capture, Output Compare, or PWM output pin.

GTIU

Input

Hall sensor input pin U.

GTIV

Input

Hall sensor input pin V.

GTIW

Input

Hall sensor input pin W.

GTOUUP

Output

Three-phase PWM output for BLDC motor control (positive U phase).

GTOULO

Output

Three-phase PWM output for BLDC motor control (negative U phase).

GTOVUP

Output

Three-phase PWM output for BLDC motor control (positive V phase).

GTOVLO

Output

Three-phase PWM output for BLDC motor control (negative V phase).

GTOWUP

Output

Three-phase PWM output for BLDC motor control (positive W phase).

GTOWLO

Output

Three-phase PWM output for BLDC motor control (negative W phase).

AGT

AGTEE0,

AGTEE1

Input

External event input enable.

AGTIO0, AGTIO1 I/O

External event input and pulse output.

AGTO0, AGTO1

Output

Pulse output.

AGTOA0,

AGTOA1

Output

Output compare match A output.

AGTOB0,

AGTOB1

Output

Output compare match B output.

RTC

RTCOUT

Output

Output pin for 1-Hz/64-Hz clock.

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