Renesas R5F524UCADFP#50

Overview

R5F524UCADFP#50 from Renesas Electronics is a 30-pin LSSOP-packaged RL78/G12 16-bit MCU with 16 KB code flash, 2 KB data flash, and 2 KB RAM, operating at 1.8–5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an ultra-low-power architecture (63 μA/MHz), 10-bit 8-channel ADC, dual UART, CSI, I²C, TAU timer (8-channel), DMA (2-channel), CRC, and on-chip debug - deployed in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F524UCADFP#50 datasheet, R5F524UCADFP#50 pinout, R5F524UCADFP#50 application, or R5F524UCADFP#50 equivalent, key selection criteria include its 2 KB data flash for firmware-over-the-air updates, ±1.0% high-speed on-chip oscillator accuracy over –40°C to +85°C, integrated safety features (CRC, RAM/SFR guard), and 30-pin LSSOP package with 26 GPIOs including 8 analog inputs and 9 N-ch open-drain outputs.

Technical Context

The R5F524UCADFP#50 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 1 µs (1 MHz). Its clock system combines a high-accuracy ±1.0% on-chip oscillator (1–24 MHz selectable), low-speed 15 kHz on-chip oscillator, and external crystal support (1–20 MHz).

Peripheral integration includes two independent serial array units (SAU0/SAU2) enabling simultaneous UART0/UART2, CSI00/CSI20, and I²C00/I²C20 operation; TAU0/TAU1 timers provide 8-channel 16-bit timing with PWM capability; and DMA channels enable background data flash rewriting while executing code from program memory.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), JEDEC MS-012AC compliant, thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F524TCADFP#50, the R5F524UCADFP#50 offers double code flash capacity and higher RAM for complex state machines; versus R5F523UAADFP#50, it adds certified safety peripherals and integrated data flash - critical for industrial firmware resilience and field-upgrade capability.

Availability

R5F524UCADFP#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and programmable logic relays requiring stable component supply across extended product lifecycles.

Supply support for R5F524UCADFP#50 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G12 product line delivers ultra-low-power 16-bit MCUs targeting cost-sensitive industrial and consumer control applications - emphasizing energy efficiency, integrated analog, and functional safety features without premium pricing.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for R5F524UCADFP#50?

The R5F524UCADFP#50 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS performance. This rating is measured under standard conditions (VDD = 2.7–5.5 V, TA = –40°C to +85°C) and reflects sustained integer throughput for typical control workloads. The R5F524UCADFP#50 maintains this performance across its full 1.8–5.5 V supply range, with automatic clock scaling ensuring consistent timing margins.

Does R5F524UCADFP#50 support background data flash rewriting while executing application code?

Yes, the R5F524UCADFP#50 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously erasing or programming data flash sectors - essential for robust firmware updates and runtime parameter logging. The R5F524UCADFP#50 implements this via dedicated hardware control logic, eliminating software polling overhead and guaranteeing atomic write operations.

What safety features are integrated into R5F524UCADFP#50 for industrial applications?

The R5F524UCADFP#50 includes CRC calculation unit, RAM guard, and SFR guard - all documented in the RL78/G12 User's Manual as functional safety enablers. These features detect memory corruption, unauthorized register writes, and data transmission errors. The R5F524UCADFP#50 is designed to support IEC 61508 SIL2 compliance when implemented per Renesas' functional safety guidelines, making it suitable for safety-monitored motor drives and PLC modules.

How many serial communication interfaces does R5F524UCADFP#50 provide, and what protocols are supported?

The R5F524UCADFP#50 provides dual UART (UART0 and UART2), dual simplified SPI (CSI00 and CSI20), and dual simplified I²C (I²C00 and I²C20) - all accessible through flexible pin multiplexing. Each interface operates independently, enabling concurrent communication with multiple peripherals (e.g., display, sensor, and wireless module). The R5F524UCADFP#50 does not implement full I²C bus arbitration but supports standard master/slave transactions compliant with I²C specification v2.1.

What is the analog input capability of R5F524UCADFP#50, and does it include internal reference voltage?

The R5F524UCADFP#50 features an 8-channel 10-bit successive-approximation ADC with internal 1.45 V reference voltage and dedicated AVREFP/AVREFM pins for differential measurement. It supports single-ended and differential input modes, programmable sample-and-hold timing, and conversion triggers from timers or external events. The R5F524UCADFP#50 also integrates an on-die temperature sensor calibrated to ±3°C accuracy - usable for thermal compensation without external components.