Renesas R5F100LGAFB#V0

Overview

R5F100LGAFB#V0 from Renesas is a 64-pin LFQFP-0.5mm-pitch 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB data flash, 12 KB RAM, 32 MHz max CPU speed (41 DMIPS), and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode). It integrates 16-bit timers, 10-bit ADC (26 channels), UART/SPI/I²C interfaces, RTC, and on-chip debug - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F100LGAFB#V0 datasheet, R5F100LGAFB#V0 pinout, R5F100LGAFB#V0 application, or R5F100LGAFB#V0 equivalent, key selection criteria include its 64-pin LFQFP package, -40°C to +105°C industrial temperature grade (G suffix), integrated data flash with 1M rewrite cycles, real-time clock with calendar/alarm, and support for SNOOZE mode wake-up via peripheral interrupts.

Technical Context

The R5F100LGAFB#V0 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline, 1 MB address space, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It supports multiple low-power modes (HALT, STOP, SNOOZE) and features a high-accuracy ±1.0% on-chip oscillator across 1–32 MHz.

Its peripheral set includes up to 16 channels of 16-bit timer, one 12-bit interval timer, one RTC with calendar and clock correction, one watchdog timer, and three serial interface types (CSI, UART/LIN, I²C) - all accessible via dedicated SFRs and DMA channels (4-channel controller with 2-clock transfers).

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade (G-suffix) with operating temperature range of –40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LGAFB#V0, the #X0 variant offers identical electrical and functional behavior but optimized for reel-based production, while R5F101LGAFB#V0 removes data flash to lower unit cost and simplify firmware design where non-volatile parameter storage is unnecessary.

Availability

R5F100LGAFB#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and building automation controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F100LGAFB#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 targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and energy-harvesting systems.

FAQ

What is the maximum operating temperature rating for the R5F100LGAFB#V0?

The R5F100LGAFB#V0 carries the 'G' suffix, indicating an industrial temperature grade with guaranteed operation from –40°C to +105°C. This is validated across all specifications including flash programming, ADC accuracy, and oscillator stability - making it suitable for under-hood automotive modules and factory-floor controllers.

Does the R5F100LGAFB#V0 support in-system programming via its built-in debug interface?

Yes, the R5F100LGAFB#V0 supports full in-system programming using its on-chip debug interface. It enables flash erase/write, register inspection, and breakpoint debugging without external hardware - leveraging the SWD-compatible TOOLx pins and integrated flash shield window for secure firmware updates.

How many ADC input channels does the R5F100LGAFB#V0 provide, and what reference options are available?

The R5F100LGAFB#V0 provides 26 analog input channels (ANI0–ANI25) with 10-bit resolution. Reference options include external AVREFP/AVREFM pins, internal 1.45 V bandgap reference, and VDD as reference - all selectable per channel via ADCSR register settings.

Can the R5F100LGAFB#V0 operate from a single 3.3 V supply while interfacing with 1.8 V peripherals?

Yes, the R5F100LGAFB#V0 supports different-potential interface operation. Its I/O ports can be configured for 1.8 V, 2.5 V, or 3 V logic levels - enabling direct connection to low-voltage peripherals without level shifters, provided VDD ≥ 1.8 V and appropriate port control bits are set.

What is the minimum current consumption of the R5F100LGAFB#V0 in STOP mode with RTC active?

The R5F100LGAFB#V0 achieves 0.57 μA typical current consumption in STOP mode while maintaining RTC operation and low-voltage detector (LVD) functionality - measured at VDD = 3.0 V and TA = 25°C. This value is guaranteed across the full –40°C to +105°C range per datasheet Section 1.1.