S128 datasheet(13/107 Pages) RENESAS

13 / 107 page

R01DS0309EU0100 Rev.1.00

Page 13 of 107

Mar 10, 2017

S128

1. Overview

1.5

Pin Functions

Table 1.14

Pin functions (1 of 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

I/O

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

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

GTOULO

Output

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

GTOVUP

Output

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

GTOVLO

Output

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

GTOWUP

Output

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

GTOWLO

Output

3-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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