Renesas R5F100LDAFA#50

Overview

R5F100LDAFA#50 from Renesas is a 64-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 128 KB flash, 8 KB data flash, 12 KB RAM, 32 MHz operation (41 DMIPS), and ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 16-bit timers, 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and real-time clock - deployed in industrial motor control and sensor node firmware.

For engineers reviewing the R5F100LDAFA#50 datasheet, R5F100LDAFA#50 pinout, R5F100LDAFA#50 application, or R5F100LDAFA#50 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade (D suffix), LQFP-64 0.65-mm pitch package, integrated data flash with background operation, and RL78 CPU core's low-energy interrupt latency and code density.

Technical Context

The R5F100LDAFA#50 implements the RL78 CISC CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 128 KB on-chip code flash (1 KB block size), 8 KB data flash with BGO support, and 12 KB RAM - all accessible under single 1.6–5.5 V supply.

Peripheral integration includes up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, dual UART/LIN-capable serial interfaces, up to 16× 16-bit timers with interval/RTC/watchdog functions, and DMA controller with 4 channels - enabling deterministic real-time response in closed-loop control systems.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm, 0.65-mm pitch (JEDEC MS-026), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LDAFA#50, the G-grade R5F100LDGFA#50 adds thermal margin without changing code or layout, while R5F101LDAFA#50 removes data flash to lower unit cost - making the three variants distinct in lifecycle management, thermal robustness, and embedded nonvolatile storage capability.

Availability

R5F100LDAFA#50 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, wireless sensor nodes, and factory automation I/O modules requiring stable component supply across multi-year production cycles.

Supply support for R5F100LDAFA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power performance with integrated peripherals for cost-sensitive, high-volume industrial and consumer applications - emphasizing energy efficiency, code density, and rapid development.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100LDAFA#50?

The R5F100LDAFA#50 operates at up to 32 MHz with a measured performance of 41 DMIPS. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator. The core supports dynamic clock switching between 32 MHz (0.03125 μs instruction time) and 32.768 kHz (30.5 μs instruction time), allowing optimized trade-offs between throughput and power consumption in the R5F100LDAFA#50.

Does the R5F100LDAFA#50 include on-chip data flash, and what are its key characteristics?

Yes, the R5F100LDAFA#50 includes 8 KB of on-chip data flash memory. It supports background operation (BGO), enabling program execution from code flash while rewriting data flash. Rated for 1,000,000 write/erase cycles (typical) and operable across the full 1.8–5.5 V supply range, this memory is used for parameter storage, firmware updates, and event logging in the R5F100LDAFA#50.

What low-power modes does the R5F100LDAFA#50 support, and how do they impact current consumption?

The R5F100LDAFA#50 supports HALT (66 μA/MHz), STOP (0.57 μA), and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA - ideal for battery-backed timekeeping or wake-on-interrupt scenarios. HALT mode retains RAM and register contents while stopping the CPU clock, reducing dynamic power proportionally to frequency. These modes are fully controllable in firmware and validated across the -40°C to +85°C range for the R5F100LDAFA#50.

Can the R5F100LDAFA#50 interface directly with 1.8 V or 2.5 V peripherals?

Yes, the R5F100LDAFA#50 supports different potential interface operation: selected I/O ports tolerate 1.8 V, 2.5 V, or 3 V logic levels directly without external level shifters. This is implemented via configurable input buffer thresholds and drive strength settings, verified across the full industrial temperature range. Designers can mix voltage domains safely on the same port group in the R5F100LDAFA#50.

What debugging interface does the R5F100LDAFA#50 provide, and is external hardware required?

The R5F100LDAFA#50 includes an on-chip debug function accessible via Renesas' single-wire debug (SWD) interface using the RESET pin. No external emulator is required - standard tools like E2 studio and CS+ support full breakpoint, step, and memory inspection. Debug firmware resides in dedicated ROM, ensuring reliability and zero footprint in user code for the R5F100LDAFA#50.