Renesas R5F52105BDFP#30

Overview

R5F52105BDFP#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), and real-time clock with deep software standby support. It serves as a main control unit in industrial HMI panels requiring deterministic timing, low-power operation, and IEC60730-compliant safety functions.

For engineers reviewing the R5F52105BDFP#30 datasheet, R5F52105BDFP#30 pinout, R5F52105BDFP#30 application, or R5F52105BDFP#30 equivalent, key selection criteria include its 100-pin LQFP package, 50-MHz max frequency under 2.7–5.5 V supply, RTC-triggered wake-up capability, and ELC-driven peripheral coordination without CPU intervention.

Technical Context

The R5F52105BDFP#30 implements a CISC Harvard-architecture 32-bit RX core with 5-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32-bit multiply-accumulate operations. Its clock system integrates PLL, sub-clock oscillator (32.768 kHz), and dedicated IWDT oscillator (125 kHz), enabling independent domain clocks: ICLK (50 MHz), PCLK (32 MHz), BCLK (12.5 MHz), and FCLK (32 MHz).

It supports four low-power modes including deep software standby with RTC active, and features event-driven peripheral activation via ELC - allowing MTU2 timers, A/D conversion triggers, and SCI baud-rate generation to operate while CPU sleeps. The chip version B variant includes full RTC, 16-channel A/D, and 2-channel 10-bit D/A - confirmed for this 100-pin LQFP configuration.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A), 14 × 14 mm, 0.5-mm pitch, RoHS-compliant, Pb-free terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52105ADFP#V0, the R5F52105BDFP#30 adds RTC, D/A, and 4 extra IRQ lines - critical for time-aware industrial nodes; versus R5F52105BDFN#30, it provides 20 more GPIO and full external bus capability for memory expansion or parallel interface peripherals.

Availability

R5F52105BDFP#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, home appliance control boards, and building automation nodes requiring stable component supply, long-term lifecycle support, and IEC60730 compliance verification.

Supply support for R5F52105BDFP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX210 Group - including the R5F52105BDFP#30 - was designed for cost-sensitive industrial and consumer applications demanding high code efficiency, ultra-low power modes, and integrated functional safety features.

FAQ

What is the maximum operating frequency and voltage range for the R5F52105BDFP#30?

The R5F52105BDFP#30 operates at up to 50 MHz when supplied with 2.7–5.5 V, 32 MHz at 1.8–2.7 V, and 20 MHz at 1.62–1.8 V. Its 50-MHz performance enables deterministic real-time response in control loops and communication stacks, while the wide voltage range supports direct connection to unregulated 3.3 V or 5 V rails without external regulators.

Does the R5F52105BDFP#30 include a real-time clock (RTC), and what functionality does it support?

Yes, the R5F52105BDFP#30 includes a fully featured RTC driven by a 32.768 kHz sub-clock. It supports calendar/time display (year/month/day/hour/min/sec), alarm and periodic interrupts, time capture on external events, leap-year correction, and RTC-initiated wake-up from deep software standby - all confirmed for chip version B in the 100-pin LQFP package.

How many A/D converter channels does the R5F52105BDFP#30 have, and what is its conversion speed?

The R5F52105BDFP#30 integrates a 12-bit A/D converter with 16 input channels and a minimum conversion time of 1.0 μs per channel when ADCLK runs at 50 MHz. It supports scan modes (single, continuous, group), sample-and-hold for three channels, and synchronized sampling across three channels - essential for motor current sensing and multi-sensor acquisition.

What debug interface does the R5F52105BDFP#30 support, and is it compatible with standard tools?

The R5F52105BDFP#30 supports the FINE debug interface, fully compatible with Renesas E1 emulator and third-party debuggers supporting RX FINE protocol. This enables non-intrusive real-time tracing, flash programming, and breakpoint debugging without requiring SWD/JTAG pins - preserving GPIO count and simplifying board design.

Is the R5F52105BDFP#30 qualified for IEC60730 Class B safety compliance?

Yes, the R5F52105BDFP#30 includes hardware-assisted IEC60730 Class B compliance features: A/D converter self-diagnostic and disconnection detection, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance, and voltage monitoring circuits - all documented in the RX210 Group hardware manual and supported by Renesas safety libraries.