RA2A1 datasheet(5/100 Pages) RENESAS

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R01DS0354EJ0110 Rev.1.10

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Mar 16, 2020

RA2A1 Datasheet

1. Overview

Table 1.4

Event Link

Feature

Functional description

Event Link Controller (ELC)

The Event Link Controller (ELC) uses the interrupt requests generated by various peripheral

modules as event signals to connect them to different modules, enabling direct interaction

between the modules without CPU intervention. See section 17, Event Link Controller (ELC) in

User’s Manual.

Table 1.5

Direct memory access

Feature

Functional description

Data Transfer Controller (DTC)

A Data Transfer Controller (DTC) module is provided for transferring data when activated by an

interrupt request. See section 16, Data Transfer Controller (DTC) in User’s Manual.

Table 1.6

Timers

Feature

Functional description

General PWM Timer (GPT)

The General PWM Timer (GPT) is a 32-bit timer with one channel and a 16-bit timer with six

channels. PWM waveforms can be generated by controlling the up-counter, down-counter, or

the up- and down-counter. In addition, PWM waveforms can be generated for controlling

brushless DC motors. The GPT can also be used as a general-purpose timer. See section 21,

General PWM Timer (GPT) in User’s Manual.

Port Output Enable for GPT (POEG)

Use the Port Output Enable for GPT (POEG) function to place the General PWM Timer (GPT)

output pins in the output disable state. See section 20, Port Output Enable for GPT (POEG) in

User’s Manual.

Asynchronous General Purpose

Timer (AGT)

The Asynchronous General Purpose Timer (AGT) is a 16-bit timer that can be used for pulse

output, external pulse width or period measurement, and counting external events.

This 16-bit timer consists of a reload register and a down-counter. The reload register and the

down-counter are allocated to the same address, and they can be accessed with the AGT

Realtime Clock (RTC)

The Realtime Clock (RTC) has two counting modes, calendar count mode and binary count

mode, that are controlled by the register settings.

For calendar count mode, the RTC has a 100-year calendar from 2000 to 2099 and

automatically adjusts dates for leap years.

For binary count mode, the RTC counts seconds and retains the information as a serial value.

Binary count mode can be used for calendars other than the Gregorian (Western) calendar.

See section 23, Realtime Clock (RTC) in User’s Manual.

Table 1.7

Communication interfaces (1 of 2)

Feature

Functional description

Serial Communications Interface

(SCI)

The Serial Communication Interface (SCI) is configurable to five asynchronous and

synchronous serial interfaces:

 Asynchronous interfaces (UART and asynchronous communications interface adapter

(ACIA))

 8-bit clock synchronous interface

 Simple IIC (master-only)

 Simple SPI

 Smart card interface.

The smart card interface complies with the ISO/IEC 7816-3 standard for electronic signals and

transmission protocol.

SCI0 has FIFO buffers to enable continuous and full-duplex communication, and the data

transfer speed can be configured independently using an on-chip baud rate generator. See

section 27, Serial Communications Interface (SCI) in User’s Manual.

I2C bus interface (IIC)

The 2-channel I2C bus interface (IIC) conforms with and provides a subset of the NXP I2C

(Inter-Integrated Circuit) bus interface functions. See section 28, I2C Bus Interface (IIC) in

User’s Manual.

Serial Peripheral Interface (SPI)

Two independent Serial Peripheral Interface (SPI) channels are capable of high-speed, full-

duplex synchronous serial communications with multiple processors and peripheral devices.

See section 30, Serial Peripheral Interface (SPI) in User’s Manual.

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