Renesas R5F52103BDFM#30

Overview

R5F52103BDFM#30 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 50 MHz (78 DMIPS), featuring 64 KB on-chip flash, 12 KB SRAM, and 8 KB data flash. It integrates a 12-bit A/D converter (1 μs conversion), 10-bit D/A converter (2 channels), RTC with deep software standby wake-up, and ELC for event-driven peripheral operation-targeted for industrial control panels requiring deterministic real-time response and IEC60730 compliance.

For engineers reviewing the R5F52103BDFM#30 datasheet, R5F52103BDFM#30 pinout, R5F52103BDFM#30 application, or R5F52103BDFM#30 equivalent, key selection criteria include its 64-pin LQFP (PLQP0064KB-A) package, −40°C to +85°C temperature grade, support for SCI (4 channels), I²C, RSPI, and hardware-assisted CRC calculation for functional safety diagnostics.

Technical Context

The R5F52103BDFM#30 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. Its clock system includes PLL, sub-clock oscillator (32.768 kHz), and dedicated IWDT oscillator, with independent clock domains for 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 integrates ELC to trigger peripheral operations (e.g., TPU, A/D) directly via event signals without CPU intervention, reducing latency and power consumption in sensor-triggered control loops.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-A), 10 × 10 mm, 0.5-mm pitch, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52103BDFM#30, R5F52106BDFM#30 offers scalable memory for complex control algorithms, while R5F52103BGFM#30 extends operational reliability in high-temperature environments-both retain identical pinout, peripheral configuration, and toolchain compatibility.

Availability

R5F52103BDFM#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, PLC I/O modules, and home appliance controllers requiring stable component supply, long-term lifecycle support, and IEC60730-compliant design resources.

Supply support for R5F52103BDFM#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX210 Group, including R5F52103BDFM#30, was designed for cost-sensitive industrial control applications demanding real-time performance, functional safety features, and low-power operation across extended temperature ranges.

FAQ

What is the maximum operating frequency and voltage range for the R5F52103BDFM#30?

The R5F52103BDFM#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 single-supply operation simplifies power design and eliminates need for multiple regulators in compact industrial systems. All performance specifications-including flash access speed and A/D conversion time-are guaranteed across these voltage-frequency combinations.

Does the R5F52103BDFM#30 support hardware debugging, and what interface is used?

Yes, the R5F52103BDFM#30 includes an on-chip debugging circuit compatible with Renesas E1 emulator via the FINE interface. This enables non-intrusive breakpoints, real-time variable watch, and flash programming during development-critical for validating timing-critical control loops and IEC60730 diagnostic routines without modifying application code.

How many serial communication interfaces does the R5F52103BDFM#30 provide, and which types are supported?

The R5F52103BDFM#30 provides four SCI channels (asynchronous, clock-synchronous, smart card), one I²C bus interface (up to 400 kbps, SMBus-capable), and one RSPI channel (up to 16 Mbps). These interfaces are fully independent and can operate concurrently-enabling simultaneous communication with displays, sensors, and fieldbuses in multi-protocol industrial gateways.

What low-power modes are available on the R5F52103BDFM#30, and how does RTC function in deep software standby?

The R5F52103BDFM#30 supports four low-power modes: sleep, all-module clock stop, software standby, and deep software standby. In deep software standby, only the sub-clock oscillator and RTC remain active; the RTC can generate an interrupt or wake-up event to resume full operation-enabling battery-backed timekeeping and scheduled wake-ups in energy-constrained remote monitoring devices.

Is the R5F52103BDFM#30 pin-compatible with other RX210 Group MCUs in the same package?

Yes, the R5F52103BDFM#30 shares identical pinout and electrical characteristics with other RX210 Group devices in the 64-pin LQFP (PLQP0064KB-A) package-including R5F52104BDFM#30, R5F52105BDFM#30, and R5F52106BDFM#30-allowing hardware reuse across product variants with different flash/RAM configurations and feature sets.