Renesas R5F101SKAFB#30

Overview

R5F101SKAFB#30 from Renesas is a 32-bit RL78/G13 microcontroller with 512 KB flash, 32 KB RAM, and no data flash memory, designed for ultra-low-power embedded control in industrial temperature range (–40°C to +105°C). It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and integrates RTC, 10-bit ADC (26 channels), UART/I²C/CSI interfaces, and multiple timers - deployed in smart sensors and programmable logic controllers.

For engineers reviewing the R5F101SKAFB#30 datasheet, R5F101SKAFB#30 pinout, R5F101SKAFB#30 application, or R5F101SKAFB#30 equivalent, key selection criteria include its LFQFP-128 package, industrial-grade thermal rating, absence of on-chip data flash, real-time clock with calendar function, and support for background data flash programming in compatible variants.

Technical Context

The R5F101SKAFB#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz low-power mode). It supports HALT, STOP, and SNOOZE low-power modes, achieving 66 μA/MHz active current and 0.57 μA RTC+LVD retention current.

It features a 128-pin LFQFP (14 × 20 mm, 0.5-mm pitch) package with 100 general-purpose I/O pins (including N-ch open-drain capable), 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, and dual DMA controller (4 channels) enabling zero-wait-state transfers between SFR and RAM in just 2 clocks.

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 microcontroller applications.

Compared with R5F101SKAFB#30, R5F100SKAFB#30 adds data flash for runtime parameter storage but shares identical peripheral set and power profile, while RA2A1GBMH20 shifts to Arm architecture with superior analog subsystem but higher active current and different toolchain requirements.

Availability

R5F101SKAFB#30 is available at Aetrix Electronics and suitable for smart metering, industrial PLC modules, white goods control boards, and building automation sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for R5F101SKAFB#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for industrial and consumer equipment.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101SKAFB#30?

The R5F101SKAFB#30 operates at up to 32 MHz using its high-accuracy on-chip oscillator (±1.0% over –40°C to +85°C), delivering 41 DMIPS. Its RL78 CPU core achieves minimum instruction execution time of 0.03125 μs in high-speed mode, and supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation. This enables deterministic real-time response in motor control and sensor acquisition tasks.

Does the R5F101SKAFB#30 include on-chip data flash memory?

No, the R5F101SKAFB#30 does not include on-chip data flash memory. As indicated by the "101" prefix in its part number (per Renesas documentation), this variant provides only code flash (512 KB) and RAM (32 KB). Data flash (4–8 KB) is present only in "100" series parts like R5F100SKAFB#30. Firmware parameter storage must be implemented externally or via code flash emulation.

What package type and pin count does the R5F101SKAFB#30 use?

The R5F101SKAFB#30 uses a 128-pin LFQFP package (14 × 20 mm, 0.5-mm pitch), identified by the "FB" suffix in the part number. It provides 100 general-purpose I/O pins, including N-ch open-drain capable outputs, and supports mixed-voltage interface (1.8 V/2.5 V/3.3 V) without external level shifters - ideal for industrial control board layouts.

What is the operating temperature range certified for the R5F101SKAFB#30?

The R5F101SKAFB#30 is rated for industrial operation from –40°C to +105°C, denoted by the "G" grade in its ordering code. This qualification ensures reliable functionality in demanding environments such as factory automation cabinets, outdoor utility meters, and HVAC control units without thermal derating or additional cooling measures.

Which communication interfaces are integrated into the R5F101SKAFB#30?

The R5F101SKAFB#30 integrates UART/LIN (2–4 channels), I²C/Simplified I²C (3–10 channels), and CSI (SPI-compatible serial interface, 2–8 channels). It does not include CAN, USB, or Ethernet peripherals. LIN compliance (ISO 17987) enables direct connection to automotive body electronics networks, while hardware CSI simplifies interfacing with displays and sensors.