Renesas R5F52108BDFB#30

Overview

R5F52108BDFB#30 from Renesas Electronics is a 32-bit RX CPU-based microcontroller operating at up to 50 MHz (78 DMIPS), featuring 512 KB on-chip flash, 64 KB SRAM, 8 KB data flash, 12-bit A/D converter (16 channels, 1 µs conversion), and real-time clock with deep software standby wake-up capability - deployed in industrial control panels requiring deterministic timing and IEC60730-compliant safety functions.

For engineers reviewing the R5F52108BDFB#30 datasheet, R5F52108BDFB#30 pinout, R5F52108BDFB#30 application, or R5F52108BDFB#30 equivalent, key selection considerations include its 144-pin LQFP package (20 × 20 mm, 0.5-mm pitch), full peripheral set (15 communication channels, ELC, MPC, RTC), and chip version B feature completeness versus temperature grade D (−40°C to +85°C).

Technical Context

The R5F52108BDFB#30 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It integrates dual timer subsystems - six-channel MTU2 for complementary PWM and phase counting, and six-channel TPU for input capture/output compare - both directly triggerable via the Event Link Controller without CPU intervention.

Its clock system includes independent PLL, sub-clock (32.768 kHz), high-/low-speed on-chip oscillators, and Clock Accuracy Check (CAC) circuitry. Power management supports four low-power modes including deep software standby with RTC active, enabled by 1.62–5.5 V single-supply operation and voltage detection circuits with 16-level programmable thresholds.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm body, 0.5-mm pitch, exposed thermal pad, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52108ADFP#V0 and R5F52108CDFP#30, the R5F52108BDFB#30 uniquely delivers full peripheral complement (TPU, RTC, 144-pin I/O count) in an industrial-grade package - essential for applications demanding encoder-based motion control, calendar-aware scheduling, and scalable I/O expansion.

Availability

R5F52108BDFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, factory automation I/O modules, and building management systems requiring stable component supply across extended product lifecycles.

Supply support for R5F52108BDFB#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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX210 Group, including R5F52108BDFB#30, was designed for cost-sensitive industrial applications requiring functional safety compliance (IEC60730), rich analog integration, and deterministic real-time performance without external timing or memory components.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52108BDFB#30?

The R5F52108BDFB#30 operates at a maximum frequency of 50 MHz and delivers 78 DMIPS of processing performance using the 32-bit RXv1 CPU core. Its 5-stage pipeline, variable-length instruction set, and on-chip multiplication/division unit enable efficient execution of real-time control algorithms. The R5F52108BDFB#30 achieves zero-wait-state access to both flash and SRAM at this speed, ensuring deterministic timing for time-critical tasks.

Does the R5F52108BDFB#30 support IEC60730 Class B compliance features?

Yes, the R5F52108BDFB#30 includes integrated hardware features supporting IEC60730 Class B compliance: self-diagnostic A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance functions, and analog input disconnection detection. These capabilities reduce external component count and simplify functional safety certification for household and industrial appliances.

What package type and pin count does the R5F52108BDFB#30 use?

The R5F52108BDFB#30 uses the PLQP0144KA-A package: a 144-pin LQFP with 20 × 20 mm body size, 0.5-mm pitch, and exposed thermal pad. This package supports the full peripheral complement of chip version B, including 122 general-purpose I/O pins, all six MTU2 channels, RTC, and external bus interface - making it suitable for high-I/O industrial control applications.

How does the Event Link Controller (ELC) enhance real-time performance in the R5F52108BDFB#30?

The Event Link Controller (ELC) in the R5F52108BDFB#30 enables direct hardware-level connection of 59 event sources (e.g., timer overflows, A/D completion, GPIO edges) to peripheral modules without CPU or interrupt involvement. For example, an MTU2 channel can start A/D conversion upon PWM edge detection - reducing latency to sub-microsecond levels and freeing the CPU for higher-layer tasks. This is critical for servo control and power conversion where jitter must be minimized.

What are the memory resources available on the R5F52108BDFB#30?

The R5F52108BDFB#30 integrates 512 KB of on-chip flash memory (executed at 50 MHz with zero wait states), 64 KB of SRAM (also zero wait states), and 8 KB of data flash rated for 100,000 erase/write cycles. The data flash supports background erase/program operations without CPU load, enabling reliable storage of calibration data, device configuration, and event logs - all within a single-chip solution that eliminates external non-volatile memory.