Renesas R5F100SLDFB#70

Overview

R5F100SLDFB#70 from Renesas is a 128-pin LFQFP (0.5 mm pitch), industrial-grade RL78/G13 16-bit MCU with 512 KB flash, 32 KB RAM, and 8 KB data flash, operating from 1.6 V to 5.5 V across –40°C to +85°C. It delivers 41 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), and integrates 16-bit timers, 10-bit ADC (26 channels), UART/LIN, I²C, CSI, RTC, and DMA for embedded control in metering and industrial HMI.

For engineers reviewing the R5F100SLDFB#70 datasheet, R5F100SLDFB#70 pinout, R5F100SLDFB#70 application, or R5F100SLDFB#70 equivalent, key selection criteria include its 128-pin LFQFP-0.5mm package, industrial temperature rating (–40°C to +85°C), integrated data flash with background operation, real-time clock with calendar/alarm, and support for LIN bus communication in safety-critical sensing nodes.

Technical Context

The R5F100SLDFB#70 implements the RL78 CPU core with CISC architecture and 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 512 KB on-chip code flash (1 KB block size), 8 KB data flash with 1M rewrite cycles and background operation, and 32 KB RAM - all accessible under single-supply 1.6–5.5 V operation.

Peripheral integration targets low-power industrial control: dual 16-bit timer arrays (16 channels total), 10-bit ADC with 26 analog inputs and internal 1.45 V reference, hardware UART/LIN transceivers (4 channels), up to 10 I²C/Simplified I²C interfaces, and a dedicated RTC with calendar, alarm, and clock correction. Power management includes HALT/STOP/SNOOZE modes, on-chip POR and 14-level LVD, and DMA with 2-clock transfers between SFR and RAM.

Key Specifications

Pinout & Package

Package: 128-pin LFQFP (14 × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100SLDFB#70, R5F100SLAFB#70 trades industrial qualification for lower cost in benign environments, while R5F101SLDFB#70 removes data flash to reduce silicon area-both retain identical core performance and peripheral count but constrain specific embedded functionality.

Availability

R5F100SLDFB#70 is available at Aetrix Electronics and suitable for smart energy metering, industrial HMI panels, factory sensor nodes, building automation controllers, and predictive maintenance gateways requiring stable component supply and long-term industrial lifecycle support.

Supply support for R5F100SLDFB#70 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 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications requiring high integration, robustness, and long-term supply assurance.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100SLDFB#70?

The R5F100SLDFB#70 operates at up to 32 MHz with the high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This enables real-time execution of communication stacks (LIN, I²C), sensor fusion algorithms, and control loops without external acceleration. The RL78 core's 3-stage pipeline ensures consistent instruction timing critical for deterministic embedded applications.

Does the R5F100SLDFB#70 support LIN bus communication, and how is it implemented?

Yes, the R5F100SLDFB#70 supports LIN bus communication through its hardware UART modules, which are LIN 2.2 and SAE J2602 compliant. Each UART channel can be configured for LIN master or slave operation with automatic sync-break detection, checksum generation, and identifier filtering - eliminating software overhead and ensuring protocol compliance in motor control and sensor networks.

How much data flash memory does the R5F100SLDFB#70 include, and what are its key endurance characteristics?

The R5F100SLDFB#70 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) across the full 1.8–5.5 V supply range. It supports background operation (BGO), allowing CPU code execution from program memory during data flash rewrites - essential for uninterrupted logging and firmware parameter updates in R5F100SLDFB#70-based systems.

What low-power modes are available on the R5F100SLDFB#70, and what is the lowest achievable current draw?

The R5F100SLDFB#70 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA (typical) - enabling multi-year battery operation in remote sensor nodes. HALT mode consumes 66 μA/MHz, balancing responsiveness and efficiency for duty-cycled applications like periodic meter reading or environmental monitoring using R5F100SLDFB#70.

Is the R5F100SLDFB#70 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100SLDFB#70 is pin-compatible with all other RL78/G13 devices in the 128-pin LFQFP-0.5mm package (e.g., R5F100SHDFB#70, R5F101SLDFB#70), sharing identical pin assignments for power, reset, clocks, and all I/O peripherals. This enables flexible design reuse and migration paths within the RL78/G13 family without PCB changes when selecting R5F100SLDFB#70 or alternatives.