Renesas R5F52105BDFF#V0

Overview

R5F52105BDFF#V0 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 (12 channels), 10-bit D/A converter (2 channels), RTC, ELC, MPC, and IEC60730 safety support - deployed in industrial HMI and smart sensor nodes.

For engineers reviewing the R5F52105BDFF#V0 datasheet, R5F52105BDFF#V0 pinout, R5F52105BDFF#V0 application, or R5F52105BDFF#V0 equivalent, key selection criteria include its 80-pin LQFP-0.65mm package with 5-V-tolerant I/O, deep software standby mode with RTC wake-up, and dual watchdog timers (WDTA + IWDT) for functional safety-critical firmware.

Technical Context

The R5F52105BDFF#V0 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It supports little-endian or big-endian data arrangement and includes a 64-bit accumulator for single-cycle 32×32-bit multiplication results.

Its clock system integrates PLL (4–12.5 MHz input), sub-clock oscillator (32.768 kHz), high/low-speed on-chip oscillators, and IWDT-dedicated 125-kHz oscillator. Peripheral clocks (PCLK, BCLK, FCLK) are independently configurable - PCLK up to 32 MHz, BCLK up to 12.5 MHz, FCLK up to 32 MHz - enabling precise power/performance trade-offs.

Key Specifications

Pinout & Package

Package: PLQP0080JA-A - 80-pin LQFP, 14 × 14 mm body, 0.65 mm pitch, lead-free (Sn), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52105ADFP#V0, the R5F52105BDFF#V0 adds RTC, sub-clock support, and enhanced low-power modes - critical for time-aware edge devices. Against R5F52105BDFB#30, it trades external bus and extra timers for smaller footprint and lower BOM cost in space-constrained designs.

Availability

R5F52105BDFF#V0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor interface modules, and programmable logic relays requiring stable component supply across long-lifecycle production programs.

Supply support for R5F52105BDFF#V0 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX210 Group - including R5F52105BDFF#V0 - was designed for cost-sensitive industrial and consumer applications demanding high integration, functional safety features (IEC60730), and low-power operation without sacrificing real-time performance.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52105BDFF#V0?

The R5F52105BDFF#V0 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance. Its RXv1 32-bit CPU core uses a 5-stage pipeline and variable-length instruction set to achieve high code density and deterministic execution - making the R5F52105BDFF#V0 well-suited for real-time control tasks in industrial automation and sensor edge nodes.

Does the R5F52105BDFF#V0 support real-time clock (RTC) functionality?

Yes, the R5F52105BDFF#V0 includes a fully integrated RTC module with sub-clock oscillator support (32.768 kHz), calendar/timekeeping, alarm and periodic interrupts, time-capture capability, and RTC-initiated wake-up from deep software standby mode - all confirmed in the RX210 Group datasheet Rev.1.50, Section 1.1.

What package type and pin count does the R5F52105BDFF#V0 use?

The R5F52105BDFF#V0 uses the PLQP0080JA-A package: an 80-pin LQFP with 14 × 14 mm body size and 0.65 mm pin pitch. This package is lead-free (Sn), RoHS compliant, and features two 5-V-tolerant I/O pins - verified in Table 1.4 (Chip Version B) and Figure 1.1 of the official datasheet.

How many A/D and D/A converter channels does the R5F52105BDFF#V0 provide?

The R5F52105BDFF#V0 integrates a 12-bit A/D converter with 12 input channels (AN000–AN011) and a 10-bit D/A converter with two output channels (DA0, DA1). Conversion time is as fast as 1.0 μs per channel at 50 MHz ADCLK, and the A/D supports synchronized sampling across three channels - all specified in Table 1.2 and Section 1.1 of the datasheet.

What safety-related features does the R5F52105BDFF#V0 offer for IEC60730 compliance?

The R5F52105BDFF#V0 includes dedicated hardware features for IEC60730 Class B compliance: self-diagnostic A/D converter test, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assist functions, and analog input disconnection detection - explicitly listed under "Useful functions for IEC60730 compliance" in the datasheet's Features section.