Renesas R5F100SLAFB#V0

Overview

R5F100SLAFB#V0 from Renesas is a 128-pin LFQFP (0.5-mm pitch), industrial-grade RL78/G13 16-bit microcontroller 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 +105°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/SPI/I²C interfaces, and real-time clock for embedded control in harsh environments.

For engineers reviewing the R5F100SLAFB#V0 datasheet, R5F100SLAFB#V0 pinout, R5F100SLAFB#V0 application, or R5F100SLAFB#V0 equivalent, key selection considerations include its extended temperature rating, on-chip debug support, self-programmable flash with boot swap, background data flash rewriting, and integrated LVD with 14-level interrupt/reset configuration.

Technical Context

The R5F100SLAFB#V0 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 code flash (1 KB block size), 8 KB data flash with 1M write endurance and background operation, and 32 KB on-chip RAM.

Peripherals include up to 16 × 16-bit timers, 1 × 12-bit interval timer, 1 × calendar-based real-time clock with alarm and correction, 1 × watchdog timer, 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, and serial interfaces: up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - all configurable for mixed-voltage I/O (1.8/2.5/3.0 V interface capability).

Key Specifications

Pinout & Package

Package: 128-pin LFQFP, 14 mm × 20 mm, 0.5-mm pitch, exposed pad (PLQP0128KD-A). RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100SLAFB#V0, the #X0 variant offers identical functionality in tape format for automated assembly, while R5F101SLAFB#V0 removes data flash to reduce cost and simplify firmware design - making it optimal for fixed-parameter deployments where runtime configuration persistence is unnecessary.

Availability

R5F100SLAFB#V0 is available at Aetrix Electronics and suitable for smart energy metering, industrial motor control, and automotive body electronics requiring stable component supply, long-term lifecycle assurance, and industrial-temperature-grade reliability.

Supply support for R5F100SLAFB#V0 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 family is designed for cost-sensitive, ultra-low-power embedded control applications demanding high integration, robustness, and long product lifecycles - especially in metering, home appliances, and industrial automation.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100SLAFB#V0?

The R5F100SLAFB#V0 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 control algorithms, communication stacks, and sensor fusion tasks without external clock sources. The oscillator maintains ±1.0% accuracy across 1.8–5.5 V and –20°C to +85°C, ensuring reliable timing in variable conditions. The R5F100SLAFB#V0 also supports lower-frequency modes (e.g., 32.768 kHz) for ultra-low-power RTC operation.

Does the R5F100SLAFB#V0 support in-system programming and secure firmware updates?

Yes, the R5F100SLAFB#V0 supports full in-system programming via on-chip debug interface and includes boot swap functionality for safe firmware updates. Its flash shield window and block erase prohibition provide security against unauthorized reprogramming. Self-programming operates with VDD = 1.8–5.5 V, and background operation allows concurrent code execution during data flash writes - essential for over-the-air (OTA) updates in deployed R5F100SLAFB#V0-based devices.

What analog capabilities does the R5F100SLAFB#V0 offer for sensor interfacing?

The R5F100SLAFB#V0 integrates a 10-bit successive-approximation ADC with 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor. It supports simultaneous sampling across multiple channels and operates across the full 1.6–5.5 V supply range. These features allow direct connection of resistive sensors, thermistors, and current-sense amplifiers without external references or signal conditioning - reducing BOM cost and board space in R5F100SLAFB#V0-based measurement systems.

How does the R5F100SLAFB#V0 manage power in battery-operated applications?

The R5F100SLAFB#V0 achieves industry-leading low-power operation: 66 μA/MHz in active mode and just 0.57 μA in STOP mode with RTC and LVD active. Its HALT, STOP, and SNOOZE modes allow granular power-state control, while the on-chip LVD with 14 selectable thresholds prevents data corruption during brown-out events. These capabilities make the R5F100SLAFB#V0 ideal for battery-powered meters, remote sensors, and portable industrial tools where multi-year operation is required.

Is the R5F100SLAFB#V0 pin-compatible with other RL78/G13 variants in the same package?

Yes, all RL78/G13 devices in the 128-pin LFQFP package (e.g., R5F100SLAFB#V0, R5F101SLAFB#V0, R5F100SKAFB#V0) share identical pinouts and footprint. This enables hardware reuse across memory variants and feature sets - for example, designing one PCB that supports both data-flash-equipped R5F100SLAFB#V0 and data-flash-free R5F101SLAFB#V0 - simplifying inventory management and enabling flexible firmware differentiation without layout changes.