R5F5671CDDFM datasheet(8/179 Pages) RENESAS

8 / 179 page

RX671 Group

1. Overview

R01DS0373EJ0120 Rev.1.20

Page 8 of 179

Sep 30, 2024

Communication

function

Serial communications

interfaces (RSCI)

 2 channels (RSCI10, RSCI11)

 Serial communications modes: Asynchronous, clock synchronous, and smart-card

interface

 Multi-processor function

 On-chip baud rate generator allows selection of the desired bit rate

 Choice of LSB-first or MSB-first transfer

 Start-bit detection: Level or edge detection is selectable.

 Simple I2C

 Simple SPI

 9-bit transfer mode

 Bit rate modulation

 Double-speed mode

 Event linking by the ELC (only RSCI10)

 Supports the serial communications protocol, which contains the start frame and

information frame

 Supports the LIN format

 Data can be transmitted or received in sequence by the 32-byte FIFO buffers of the

transmission and reception unit

 Manchester encoding is supported.

 HBS (home bus system) support mode

 Data match detection

 Adjustment of the timing of sampling of the RXD signals

I2C bus interface (RIICa)

 3 channels (only channel 0 can be used in fast-mode plus)

Communication formats

I2C bus format/SMBus format

Supports the multi-master

Max. transfer rate: 1 Mbps (channel 0)

 Event linking by the ELC

High-speed I2C bus

interface (RIICHS)

 1 channel

Communication formats

I2C bus format/SMBus format

Supports the multi-master

Max. transfer rate: 3.4 Mbps

 Event linking by the ELC

CAN module (CAN)

 2 channels

 Compliance with the ISO11898-1 specification (standard frame and extended frame)

 32 mailboxes per channel

Serial peripheral

interface (RSPId)

 3 channels

 RSPI transfer facility

Using the MOSI (master out, slave in), MISO (master in, slave out), SSL (slave select),

and RSPCK (RSPI clock) signals enables serial transfer through SPI operation (four

lines) or clock-synchronous operation (three lines)

Capable of handling serial transfer as a master or slave

 Data formats

Switching between MSB first and LSB first

The number of bits in each transfer can be changed to any number of bits from 8 to 16,

or to 20, 24, or 32 bits.

128-bit buffers for transmission and reception

Up to four frames can be transmitted or received in a single transfer operation (with

each frame having up to 32 bits)

Transmit/receive data can be swapped in byte units

 Buffered structure

Double buffers for both transmission and reception

 RSPCK can be stopped with the receive buffer full for master reception.

 Event linking by the ELC

Table 1.1

Outline of Specifications (7/10)

Classification

Module/Function

Description

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