Renesas R5F52105BDFB#30

Overview

R5F52105BDFB#30 from Renesas Electronics is a 32-bit RX CPU-based microcontroller operating at up to 50 MHz (78 DMIPS), featuring 128 KB on-chip flash, 20 KB SRAM, 8 KB data flash, 12-bit A/D converter (16 channels), 10-bit D/A converter (2 channels), RTC, ELC, MPC, and IEC60730 compliance functions for industrial control applications.

For engineers reviewing the R5F52105BDFB#30 datasheet, R5F52105BDFB#30 pinout, R5F52105BDFB#30 application, or R5F52105BDFB#30 equivalent, key selection criteria include its 144-pin LQFP package, 50-MHz real-time performance, integrated analog peripherals, low-power deep software standby mode with RTC wake-up, and support for safety-critical firmware validation per IEC60730.

Technical Context

The R5F52105BDFB#30 implements a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and on-chip debugging via FINE interface. It integrates dual clock domains: system clock (ICLK) up to 50 MHz for CPU execution and peripheral module clock (PCLK) up to 32 MHz for timer and communication modules.

Its event-driven operation leverages the Event Link Controller (ELC) to trigger peripheral actions-including MTU2 PWM generation and A/D conversion-without CPU intervention, enabling deterministic low-latency response during sleep modes. The chip version B variant supports full external bus interface (16-bit, four CS areas) and all 144-pin package features including TPU, MTU2, RTC, and 16-channel A/D.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm, 0.5-mm pitch, RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F52105ADFP#V0 and R5F52105BDFP#30, the R5F52105BDFB#30 delivers full 144-pin feature set-including RTC, TPU, external bus, and maximum SCI count-enabling complex deterministic control systems without external glue logic or peripheral expansion.

Availability

R5F52105BDFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, home appliance HMI, and building automation sensor hubs requiring stable component supply, long-term lifecycle assurance, and IEC60730-certifiable firmware execution.

Supply support for R5F52105BDFB#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RX210 Group, including R5F52105BDFB#30, was designed for cost-sensitive industrial and consumer applications demanding high computational throughput, integrated analog peripherals, functional safety support, and ultra-low-power operation with RTC retention.

FAQ

What is the maximum operating frequency and associated voltage range for R5F52105BDFB#30?

The R5F52105BDFB#30 operates at a maximum frequency of 50 MHz when supplied with VCC between 2.7 V and 5.5 V. At 1.8–2.7 V, max frequency is 32 MHz; at 1.62–1.8 V, it is limited to 20 MHz. These ranges are defined in the electrical characteristics table and directly impact real-time loop performance and peripheral clock derivation.

Does R5F52105BDFB#30 include a real-time clock (RTC), and what are its key capabilities?

Yes, the R5F52105BDFB#30 includes a dedicated RTC module powered by the 32.768 kHz sub-clock. It supports calendar/time display (year/month/day/hour/minute/second), alarm and periodic interrupts, time-capture on external events, leap-year correction, and RTC-initiated wake-up from deep software standby mode-critical for energy-efficient logging and scheduling.

How many analog-to-digital converter (ADC) channels does R5F52105BDFB#30 support, and what is its conversion speed?

The R5F52105BDFB#30 integrates a 12-bit S12AD module with 16 input channels (AN000–AN015). Its minimum conversion time is 1.0 μs per channel when ADCLK runs at 50 MHz. It supports scan modes, sample-and-hold for three channels, synchronized multi-channel sampling, and self-diagnostic functions for IEC60730 compliance.

What debug interface does R5F52105BDFB#30 use, and is it compatible with standard Renesas tools?

The R5F52105BDFB#30 uses the FINE (Fast In-Circuit Emulator) interface for on-chip debugging. It is fully compatible with Renesas' E1 emulator and e2 studio IDE, supporting real-time trace, breakpoints, memory inspection, and non-intrusive execution control-essential for validating timing-critical firmware in industrial applications.

What safety-related features does R5F52105BDFB#30 provide for IEC60730 compliance?

R5F52105BDFB#30 includes hardware-assisted IEC60730 compliance features: A/D converter self-test, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assist functions, and analog input disconnection detection. These reduce software validation burden and support Class B certification requirements.