R5F5671CDDFB datasheet(3/179 Pages) RENESAS

3 / 179 page

RX671 Group

1. Overview

R01DS0373EJ0120 Rev.1.20

Page 3 of 179

Sep 30, 2024

Operating modes

 Operating modes by the mode-setting pins at the time of release from the reset state

Single-chip mode

Boot mode (for the SCI interface)

Boot mode (for the USB interface)

Boot mode (for the FINE interface)

 Selection of operating mode by register setting

Single-chip mode

On-chip ROM disabled extended mode

On-chip ROM enabled extended mode

 Endian selectable

Clock

Clock generation circuit

 Main clock oscillator, sub clock oscillator, low-speed/high-speed on-chip oscillator, PLL

frequency synthesizer, and IWDT-dedicated on-chip oscillator

 The peripheral module clocks can be set to frequencies above that of the system clock.

 Main-clock oscillation stoppage detection

 Separate frequency-division and multiplication settings for the system clock (ICLK),

peripheral module clocks (PCLKA, PCLKB, PCLKC, PCLKD), flash-IF clock (FCLK) and

external bus clock (BCLK)

The CPU and other bus masters run in synchronization with the system clock (ICLK): Up

to 120 MHz

QSPIX runs in synchronization with ICLK at Up to 120 MHz.

Peripheral modules of MTU, RSPI, SCIm, RSPIA, RSCI, and RIICHS run in

synchronization with PCLKA, which operates at up to 120 MHz.

Other peripheral modules run in synchronization with PCLKB: Up to 60 MHz

ADCLK in the S12AD (unit 0) runs in synchronization with PCLKC: Up to 60 MHz

ADCLK in the S12AD (unit 1) runs in synchronization with PCLKD: Up to 60 MHz

Flash IF run in synchronization with the flash-IF clock (FCLK): Up to 60 MHz

Devices connected to the external bus run in synchronization with the external bus clock

(BCLK): Up to 60 MHz

 Multiplication is possible with using the high-speed on-chip oscillator (HOCO) as a

reference clock of the PLL circuit

 External clock input frequency: 30 MHz (max)

 Clock output function

Reset

Nine types of reset

 RES# pin reset: Generated when the RES# pin is driven low.

 Power-on reset: Generated when the RES# pin is driven high and VCC = AVCC0 =

AVCC1 rises.

 Voltage-monitoring 0 reset: Generated when VCC = AVCC0 = AVCC1 falls.

 Voltage-monitoring 1 reset: Generated when VCC = AVCC0 = AVCC1 falls.

 Voltage-monitoring 2 reset: Generated when VCC = AVCC0 = AVCC1 falls.

 Deep software standby reset: Generated in response to an interrupt to trigger release

from deep software standby.

 Independent watchdog timer reset: Generated when the independent watchdog timer

underflows, or a refresh error occurs.

 Watchdog timer reset: Generated when the watchdog timer underflows, or a refresh

error occurs.

 Software reset: Generated by register setting.

Power-on reset

If the RES# pin is at the high level when power is supplied, an internal reset is generated.

After VCC = AVCC0 = AVCC1 has exceeded the voltage detection level and the specified

period has elapsed, the reset is cancelled.

Voltage detection circuit (LVDA)

Monitors the voltage being input to the VCC = AVCC0 = AVCC1 pins and generates an

internal reset or interrupt.

 Voltage detection circuit 0

Capable of generating an internal reset

The option-setting memory can be used to select enabling or disabling of the reset.

Voltage detection level: Selectable from three different levels (2.94 V, 2.87 V, 2.80 V)

 Voltage detection circuits 1 and 2

Voltage detection level: Selectable from three different levels (2.99 V, 2.92 V, 2.85 V)

Digital filtering (1/2, 1/4, 1/8, and 1/16 LOCO frequency)

Capable of generating an internal reset

 Two types of timing are selectable for release from reset

An internal interrupt can be requested.

 Detection of voltage rising above and falling below thresholds is selectable.

 Maskable or non-maskable interrupt is selectable

Voltage detection monitoring

Event linking

Table 1.1

Outline of Specifications (2/10)

Classification

Module/Function

Description

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