Renesas R5F52105BDFM#30

Overview

R5F52105BDFM#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 - deployed in industrial control panels requiring deterministic real-time response and functional safety support.

For engineers reviewing the R5F52105BDFM#30 datasheet, R5F52105BDFM#30 pinout, R5F52105BDFM#30 application, or R5F52105BDFM#30 equivalent, key selection criteria include its 64-pin LQFP package (PLQP0064KB-A), 128 KB/20 KB memory configuration, -40°C to +85°C temperature grade, integrated RTC with deep software standby wake-up, and dual 10-bit DACs for analog output generation in closed-loop systems.

Technical Context

The R5F52105BDFM#30 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It supports little-endian or big-endian data arrangement and includes a dedicated 64-bit accumulator for single-cycle 32×32-bit multiplication results.

Its clock system integrates PLL, main/sub-clock oscillators, on-chip high/low-speed oscillators, and IWDT-dedicated oscillator, with independent clock domains (ICLK up to 50 MHz, PCLK up to 32 MHz, BCLK up to 12.5 MHz, FCLK up to 32 MHz) enabling precise peripheral timing control and low-power operation across four power modes.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52105ADFM#V0, R5F52105BDFM#30 delivers full RTC, TPU, and RSPI functionality in the same memory configuration, while R5F52105BDFP#30 extends I/O and peripheral count at the cost of larger footprint and higher pin count - making R5F52105BDFM#30 the optimal balance of integration, size, and industrial feature set.

Availability

R5F52105BDFM#30 is available at Aetrix Electronics and suitable for industrial control panels, smart sensor nodes, energy meter front-ends, and motor drive control boards requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for R5F52105BDFM#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 R5F52105BDFM#30, was designed specifically for cost-sensitive industrial applications demanding functional safety (IEC60730), real-time determinism, analog integration, and low-power operation - targeting control, sensing, and human-machine interface subsystems.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52105BDFM#30?

The R5F52105BDFM#30 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance using the RXv1 32-bit CPU core. Its 5-stage pipeline, variable-length instruction set, and 64-bit accumulator enable efficient execution of control algorithms and signal processing tasks. The R5F52105BDFM#30 sustains this performance with zero-wait-state access to both 128 KB flash and 20 KB SRAM.

Does the R5F52105BDFM#30 support functional safety standards like IEC60730?

Yes, the R5F52105BDFM#30 includes dedicated hardware features for IEC60730 Class B compliance, including self-diagnostic support for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), and RAM testing assistance. These capabilities reduce software validation effort and accelerate certification for household appliances and industrial equipment. The R5F52105BDFM#30 is explicitly documented in Renesas' safety manual as meeting these requirements.

What analog peripherals are integrated into the R5F52105BDFM#30?

The R5F52105BDFM#30 integrates a 12-bit A/D converter with 16 input channels and 1 μs conversion time, a 10-bit D/A converter with two independent output channels, two 2-channel analog comparators (CMPA and CMPB), and an on-chip temperature sensor with programmable gain amplifier. These peripherals enable closed-loop control, sensor signal conditioning, and thermal monitoring without external components. All analog functions are fully supported in the R5F52105BDFM#30's 64-pin LQFP package.

What low-power modes does the R5F52105BDFM#30 support, and how does RTC function in deep software standby?

The R5F52105BDFM#30 supports four low-power modes, including deep software standby where the CPU, most peripherals, and main clocks are halted while the sub-clock oscillator remains active. In this mode, the RTC continues running from the 32.768 kHz crystal and can generate an interrupt or reset to wake the device - enabling precise timekeeping and scheduled wake-ups for battery-operated applications. This behavior is confirmed in the R5F52105BDFM#30's datasheet Section 1.1 and Table 1.1.

Is the R5F52105BDFM#30 pin-compatible with other RX210 Group MCUs in the same package?

No, the R5F52105BDFM#30 is not universally pin-compatible across all RX210 Group members in the 64-pin LQFP package. While it shares the PLQP0064KB-A footprint with other variants like R5F52106BDFM#30 and R5F52104BDFM#30, differences in peripheral enablement (e.g., absence of TPU in R5F52105BDFM#30 per Table 1.2) mean that pin functions may differ. Always verify signal mapping against the specific variant's datasheet before substitution. The R5F52105BDFM#30's pinout is fixed and documented in its official datasheet.