Renesas R5F101SLDFB#70

Overview

R5F101SLDFB#70 from Renesas is a 128-pin LFQFP-0.5mm-pitch, industrial-grade (−40°C to +85°C) RL78/G13 16-bit microcontroller with 512 KB flash, 32 KB RAM, and no data flash memory. It delivers 41 DMIPS at 32 MHz, operates from 1.6–5.5 V, and achieves ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), targeting battery-powered industrial control and sensor interface applications.

For engineers reviewing the R5F101SLDFB#70 datasheet, R5F101SLDFB#70 pinout, R5F101SLDFB#70 application, or R5F101SLDFB#70 equivalent, key selection criteria include its 128-pin LFQFP package, absence of on-chip data flash, industrial temperature rating, integrated RTC and 10-bit ADC with 26 channels, and support for multiple serial interfaces including UART/LIN, I²C, and CSI.

Technical Context

The R5F101SLDFB#70 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction execution time from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). Its memory map spans 1 MB address space, with 512 KB code flash organized in 1 KB blocks and 32 KB on-chip RAM.

It integrates a 10-bit A/D converter with up to 26 analog inputs, internal 1.45 V reference, and temperature sensor; a real-time clock with calendar, alarm, and correction functions; and dual 16-bit timer groups supporting PWM, input capture, and output compare. Power management includes HALT, STOP, and SNOOZE modes plus on-chip POR and LVD with 14 selectable voltage thresholds.

Key Specifications

Pinout & Package

Package: 128-pin LFQFP (14 × 20 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade (D suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101SLAFB#70 and R5F101SLGFB#70, the R5F101SLDFB#70 provides identical processing capability and I/O resources at lower unit cost and simplified flash management, making it ideal for cost-sensitive, thermally stable industrial control applications where data flash or extended temperature operation is unnecessary.

Availability

R5F101SLDFB#70 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, building automation panels, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F101SLDFB#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 industrial, automotive, and IoT markets.

The RL78/G13 family is designed for ultra-low-power general-purpose embedded control, balancing performance, peripheral richness, and energy efficiency in cost-sensitive industrial and consumer applications.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101SLDFB#70?

The R5F101SLDFB#70 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This frequency is achievable across the full 1.6–5.5 V supply range and −40°C to +85°C temperature range, with oscillator accuracy maintained at ±1.0% under those conditions. The R5F101SLDFB#70 supports dynamic clock switching to lower frequencies for power optimization without compromising real-time responsiveness.

Does the R5F101SLDFB#70 include on-chip data flash memory?

No, the R5F101SLDFB#70 does not include on-chip data flash memory. The "1" in the part number prefix (R5F101xx) explicitly indicates zero data flash capacity, distinguishing it from R5F100xx variants which provide 4–8 KB. This design choice reduces cost and simplifies firmware update procedures where non-volatile parameter storage is handled externally or omitted entirely. All R5F101SLDFB#70 units ship with 512 KB code flash and 32 KB RAM only.

What package type and pin count does the R5F101SLDFB#70 use?

The R5F101SLDFB#70 uses a 128-pin LFQFP package with 0.5 mm pitch, measuring 14 × 20 mm. The "FB" suffix in the part number confirms the LFQFP body style, while "SL" denotes the 512 KB flash/32 KB RAM configuration within the RL78/G13 family. This package provides full I/O access for complex industrial interfaces and supports automated optical inspection and reflow soldering in high-volume manufacturing.

What are the supported serial communication interfaces on the R5F101SLDFB#70?

The R5F101SLDFB#70 supports up to 10 I²C/Simplified I²C channels, 4 UART/LIN channels (with LIN 2.2 compliance), and 8 CSI (Simplified SPI) channels. These interfaces are multiplexed across dedicated port groups and can be configured independently - for example, simultaneously running UART for debug, I²C for sensor reads, and CSI for display updates. No external level shifters are required for 1.8/2.5/3.3 V logic interfacing due to built-in voltage tolerance.

How does the R5F101SLDFB#70 handle low-power operation in battery-powered systems?

The R5F101SLDFB#70 supports three ultra-low-power modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals operate during CPU sleep). In STOP mode with only RTC and LVD enabled, it draws just 0.57 μA - verified across −40°C to +85°C. Wake-up sources include external interrupts, RTC alarm, and LVD threshold crossing, enabling deterministic response to events while minimizing average system current.