Renesas R5F52105BDLA#U0

Overview

R5F52105BDLA#U0 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 for industrial control applications.

For engineers reviewing the R5F52105BDLA#U0 datasheet, R5F52105BDLA#U0 pinout, R5F52105BDLA#U0 application, or R5F52105BDLA#U0 equivalent, key selection criteria include its 100-pin TFLGA package (5.5 × 5.5 mm, 0.5-mm pitch), −40°C to +85°C temperature grade, integrated real-time clock with deep software standby wake-up, and support for up to 15 communication channels including SCI, I²C, and RSPI.

Technical Context

The R5F52105BDLA#U0 implements a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and on-chip debugging via FINE interface. It integrates dual clock domains: system clock (ICLK) up to 50 MHz and peripheral clock (PCLK) up to 32 MHz, enabling independent timing control for CPU and peripherals.

Its event-driven operation leverages the Event Link Controller (ELC) to trigger timer, ADC, and communication module actions without CPU intervention, while the Multi-function Pin Controller (MPC) allows flexible peripheral function assignment across GPIO pins - critical for compact PCB layouts in space-constrained industrial designs.

Key Specifications

Pinout & Package

Package: 100-pin Thin Fine-Pitch Ball Grid Array (TFLGA), PTLG0100KA-A, 5.5 × 5.5 mm body, 0.5-mm ball pitch, RoHS-compliant, SnAgCu termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52105ADLJ#U0, R5F52105BDLA#U0 adds RTC, TPU, and enhanced SCI count - essential for time-aware industrial control; versus R5F52106BDLA#U0, it trades memory headroom for cost-sensitive deployments where 128 KB flash suffices.

Availability

R5F52105BDLA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, factory automation I/O modules, and building management system controllers requiring stable component supply and long-term manufacturability.

Supply support for R5F52105BDLA#U0 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 R5F52105BDLA#U0, was designed for cost-sensitive industrial applications demanding real-time performance, functional safety support (IEC60730), and compact packaging - targeting motor drives, metering, and programmable logic controllers.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52105BDLA#U0?

The R5F52105BDLA#U0 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance. Its 32-bit RX CPU core features a 5-stage pipeline, variable-length instructions, and hardware multiplier/divider - enabling deterministic execution for real-time industrial firmware. The R5F52105BDLA#U0 achieves this performance with zero-wait-state flash access at full speed.

Which package type and footprint does the R5F52105BDLA#U0 use?

The R5F52105BDLA#U0 uses a 100-pin Thin Fine-Pitch Ball Grid Array (TFLGA) package designated PTLG0100KA-A, measuring 5.5 × 5.5 mm with 0.5-mm ball pitch. This compact, RoHS-compliant package supports high-density PCB layouts and is optimized for automated assembly. The R5F52105BDLA#U0 requires standard BGA reflow profiles and thermal vias under the exposed pad per Renesas layout recommendations.

Does the R5F52105BDLA#U0 include a real-time clock (RTC) and low-power modes?

Yes, the R5F52105BDLA#U0 integrates a full-featured RTC with calendar mode, alarm interrupt, periodic interrupt, and time-capture capability - all powered by the 32.768 kHz sub-clock oscillator. It supports four low-power modes, including deep software standby where the RTC remains active while CPU and most peripherals are halted. The R5F52105BDLA#U0 can wake from this mode via RTC alarm or external pin event, enabling battery-backed operation in remote sensors.

What communication interfaces are supported by the R5F52105BDLA#U0?

The R5F52105BDLA#U0 supports up to 15 communication channels: 12 SCI channels (asynchronous/clock-synchronous/smart card), 1 I²C bus interface (up to 400 kbps), and 1 RSPI channel (up to 16 Mbps). It also includes an on-chip baud rate generator and supports LSB/MSB-first transfer. The R5F52105BDLA#U0's MPC allows flexible pin assignment for these interfaces, simplifying board design across product variants.

How does the R5F52105BDLA#U0 support functional safety standards like IEC60730?

The R5F52105BDLA#U0 includes hardware-assisted self-diagnostic features for A/D converter, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT), and RAM testing - directly supporting Class B compliance under IEC60730. These features reduce software validation burden and enable robust failure detection in appliance and industrial control applications. The R5F52105BDLA#U0 documentation provides test procedures and diagnostic coverage metrics aligned with the standard.