Renesas R5F52103BDFL#30

Overview

R5F52103BDFL#30 from Renesas Electronics 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, ELC for event-driven peripheral control, and IEC60730-compliant safety functions - deployed in industrial HMI and smart sensor nodes requiring deterministic real-time response.

For engineers reviewing the R5F52103BDFL#30 datasheet, R5F52103BDFL#30 pinout, R5F52103BDFL#30 application, or R5F52103BDFL#30 equivalent, key selection criteria include its 48-pin LQFP package (7 × 7 mm, 0.5-mm pitch), −40°C to +85°C temperature grade, 12-channel 12-bit ADC with sample-and-hold, dual 10-bit DAC outputs, and support for SCI (4 channels), I²C, and RSPI interfaces under single-supply operation (1.62–5.5 V).

Technical Context

The R5F52103BDFL#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 (4–12.5 MHz input), sub-clock oscillator (32.768 kHz), and dedicated IWDT oscillator (125 kHz), with independent ICLK (50 MHz max), PCLK (32 MHz max), BCLK (12.5 MHz max), and FCLK (32 MHz max) domains.

Peripheral integration centers on event-driven operation: the Event Link Controller (ELC) routes 59 event signals directly to modules like MTU2, TPU, and ADC without CPU intervention, while the Multi-function Pin Controller (MPC) enables flexible I/O function assignment across 34 GPIO pins - including 2×5-V-tolerant inputs and 26 open-drain outputs - supporting mixed-voltage interface design.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (PLQP0048KB-A), 7 × 7 mm body, 0.5-mm pitch, exposed pad not present, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52103BDFL#30, R5F52103BDFM#30 offers expanded I/O and peripherals in a larger package, while R5F52104BDFL#30 delivers higher memory density and ADC channel count within identical footprint - enabling scalable design without layout revision.

Availability

R5F52103BDFL#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home thermostats, PLC I/O modules, and energy meter front-ends requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for R5F52103BDFL#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 industrial, automotive, and IoT markets.

The RX210 Group, including R5F52103BDFL#30, was designed for cost-sensitive industrial and consumer applications demanding high computational efficiency, integrated analog peripherals, and functional safety features - targeting HMI, sensor fusion, and real-time control.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52103BDFL#30?

The R5F52103BDFL#30 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance. This is achieved by the 32-bit RXv1 CPU core with a 5-stage pipeline, variable-length instruction set, and hardware multiplier/divider. The R5F52103BDFL#30 maintains no-wait-state execution on both 64 KB flash and 12 KB SRAM at this speed, ensuring deterministic real-time behavior critical for industrial control loops.

Does the R5F52103BDFL#30 support IEC60730 functional safety compliance?

Yes, the R5F52103BDFL#30 includes dedicated hardware features for IEC60730 Class B compliance, including self-diagnostic functions for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), and RAM test assistance. These capabilities are documented in the RX210 Group hardware manual and enable certified safety firmware implementation without external monitoring components.

What are the analog peripheral capabilities of the R5F52103BDFL#30?

The R5F52103BDFL#30 integrates a 12-bit successive-approximation A/D converter with 12 input channels, 1 μs minimum conversion time, and sample-and-hold circuits for three channels. It also provides two 10-bit D/A converters, two analog comparators (CMPA and CMPB), and an on-chip temperature sensor. All analog blocks operate across the full 1.62–5.5 V supply range and support synchronized sampling triggered by ELC or timers.

Which communication interfaces are available on the R5F52103BDFL#30?

The R5F52103BDFL#30 supports four Serial Communications Interface (SCI) channels, one I²C bus interface (RIIC) compliant with SMBus, and one Serial Peripheral Interface (RSPI) capable of 16 Mbps transfers. SCI supports asynchronous, clock-synchronous, and smart card modes; RIIC operates up to 400 kbps; RSPI includes double-buffered TX/RX, 4-frame burst mode, and LSB/MSB-first configuration.

What low-power modes does the R5F52103BDFL#30 support, and how does RTC function in deep software standby?

The R5F52103BDFL#30 supports four low-power modes: sleep, all-module clock stop, software standby, and deep software standby. In deep software standby, the CPU and most peripherals are halted while the RTC remains fully operational using the 32.768 kHz sub-clock. The R5F52103BDFL#30 can wake up from this state via RTC alarm, external pin interrupt, or ELC-triggered event - enabling ultra-low-quiescent-current operation for battery-powered applications.