Renesas R5F101SLAFB#30

Overview

R5F101SLAFB#30 from Renesas is a 32-bit RL78/G13 microcontroller with no data flash memory, 512 KB code flash, 32 KB RAM, and 128-pin LFQFP (0.5-mm pitch) package. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes including STOP (0.57 μA) and HALT. It targets industrial control systems requiring high integration, real-time clock, 26-channel 10-bit ADC, and LIN-capable UART.

For engineers reviewing the R5F101SLAFB#30 datasheet, R5F101SLAFB#30 pinout, R5F101SLAFB#30 application, or R5F101SLAFB#30 equivalent, key selection criteria include its 128-pin LFQFP-0.5mm footprint, absence of on-chip data flash, industrial-grade temperature range (–40°C to +105°C), and support for background data flash programming via external memory interface.

Technical Context

The R5F101SLAFB#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a 12-bit interval timer, calendar-based real-time clock with alarm and correction, and watchdog timer powered by dedicated low-speed oscillator.

Peripheral subsystems include up to 16 channels of 16-bit timer, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN interfaces, 2–8 CSI (SPI-compatible) channels, and DMA controller with 4 channels supporting 2-clock transfers between SFR and RAM.

Key Specifications

Pinout & Package

Package: 128-pin LFQFP, 14 × 20 mm, 0.5-mm pitch, exposed pad (PLQP0128KD-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101SLAFB#30, R5F100SLAFB#30 adds data flash for embedded data logging but shares identical packaging and real-time performance, while R5F101MLAFB#30 trades memory and I/O scalability for compactness and lower BOM cost in simpler control tasks.

Availability

R5F101SLAFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, automotive body electronics, and factory automation I/O terminals requiring stable component supply and long-term lifecycle assurance.

Supply support for R5F101SLAFB#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RL78/G13 product line delivers true low-power 32-bit performance for general-purpose embedded applications, emphasizing energy efficiency, integrated peripherals, and industrial temperature resilience without sacrificing code density or real-time determinism.

FAQ

What is the maximum operating frequency and performance rating of the R5F101SLAFB#30?

The R5F101SLAFB#30 operates at up to 32 MHz and delivers 41 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set. Its minimum instruction execution time ranges from 0.03125 μs (at 32 MHz with high-speed oscillator) to 30.5 μs (at 32.768 kHz), supporting both high-throughput and ultra-low-power operational modes. The R5F101SLAFB#30 maintains this performance across its full industrial temperature range (–40°C to +105°C).

Does the R5F101SLAFB#30 include on-chip data flash memory?

No, the R5F101SLAFB#30 does not include on-chip data flash memory. As indicated by the "101" in its part number (per Renesas' naming convention), it belongs to the data-flash-free variant of the RL78/G13 family. It retains 512 KB of code flash and 32 KB of RAM. For applications requiring nonvolatile parameter storage, external EEPROM, FRAM, or SPI flash must be used - unlike the R5F100SLAFB#30, which includes 8 KB of data flash.

What package type and pin count does the R5F101SLAFB#30 use?

The R5F101SLAFB#30 uses a 128-pin LFQFP package with 0.5-mm pitch and dimensions of 14 mm × 20 mm (PLQP0128KD-A). The "FB" suffix in the part number explicitly denotes LFQFP-0.5mm, and the "#30" indicates tray packaging. This package provides 100+ usable GPIOs, multiple power/ground pairs, and an exposed thermal pad - making it suitable for thermally demanding industrial applications requiring high peripheral integration.

What are the supported low-power modes and their typical current consumption for the R5F101SLAFB#30?

The R5F101SLAFB#30 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes 0.57 μA - ideal for battery-backed timekeeping. HALT mode draws 66 μA/MHz during active operation, and SNOOZE enables selective peripheral wake-up while CPU remains halted. All modes are fully functional across the –40°C to +105°C industrial temperature range, and entry/exit is managed via dedicated control registers without external components.

Which communication interfaces are integrated into the R5F101SLAFB#30?

The R5F101SLAFB#30 integrates multiple serial interfaces: up to 10 channels of I²C/Simplified I²C, 4 channels of UART/LIN (with hardware LIN break detection), and 8 channels of CSI (SPI-compatible). It also includes a DMA controller with 4 channels to offload data movement from the CPU. These interfaces support concurrent operation - for example, UART for host communication, I²C for sensor reading, and CSI for display driver control - all without CPU intervention.