Renesas R5F100LHAFB#X0

Overview

R5F100LHAFB#X0 from Renesas is a 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), 192 KB flash, 8 KB data flash, 16 KB RAM RL78/G13 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD). It targets battery-powered industrial sensors and smart metering interfaces requiring integrated A/D, RTC, and LIN-capable UART.

For engineers reviewing the R5F100LHAFB#X0 datasheet, R5F100LHAFB#X0 pinout, R5F100LHAFB#X0 application, or R5F100LHAFB#X0 equivalent, key selection criteria include its 64-pin LFQFP-0.5mm package, 192 KB code flash with self-programming and boot swap, 12-bit interval timer + calendar RTC, 26-channel 10-bit A/D with internal reference, and support for SNOOZE mode wake-up via serial interface or external interrupt.

Technical Context

The R5F100LHAFB#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). It integrates dual-clock domain operation: high-speed main system clock (up to 32 MHz) and independent low-speed subsystem clock for RTC and LVD.

Its peripheral set includes up to 16 channels of 16-bit timer, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN channels, 2–8 CSI (SPI-compatible) channels, and DMA controller with 4 channels-enabling concurrent background data flash rewriting (BGO) while executing program code from flash memory.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 × 10 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 R5F100LHAFB#X0, R5F101LHAFB#X0 removes data flash but retains all other features-ideal for fixed-function control where parameters are factory-programmed; R5F100LJAFB#X0 reduces code flash by 64 KB while preserving data flash and peripherals-suited for streamlined applications with tighter memory budgets.

Availability

R5F100LHAFB#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and automotive body electronics requiring stable component supply and long-term lifecycle support.

Supply support for R5F100LHAFB#X0 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 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and energy-efficient embedded systems requiring rich analog integration and secure firmware management.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100LHAFB#X0?

The R5F100LHAFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, achieving 41 DMIPS performance. Its minimum instruction execution time is 0.03125 μs under this condition. The device also supports ultra-low-speed operation down to 32.768 kHz (30.5 μs instruction time) for RTC and LVD functions, enabling dynamic clock scaling to minimize power consumption across operational modes.

Does the R5F100LHAFB#X0 support in-system programming and secure firmware updates?

Yes, the R5F100LHAFB#X0 supports full in-system programming via its on-chip debug interface and self-programming capability. It includes boot swap functionality and flash shield window protection to securely manage dual-image firmware updates. The 8 KB data flash supports background operation (BGO), allowing program execution from code flash while rewriting data flash-enabling safe, atomic firmware updates without system interruption.

What analog features are integrated into the R5F100LHAFB#X0 for sensor interfacing?

The R5F100LHAFB#X0 integrates a 10-bit A/D converter with up to 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor (available in HS mode). It supports differential input configurations and programmable sample-and-hold timing. These features eliminate the need for external reference ICs or signal-conditioning circuitry in most industrial and consumer sensor applications.

How does the R5F100LHAFB#X0 handle power management in battery-powered applications?

The R5F100LHAFB#X0 offers three ultra-low-power modes: HALT (1.23 μA), STOP (0.57 μA with RTC + LVD active), and SNOOZE (fast wake-up from serial or external interrupts). Its 1.6–5.5 V wide supply range and on-chip voltage detector with 14 selectable thresholds ensure reliable operation across battery discharge curves-from fresh alkaline (1.6 V) to deeply depleted states-without external supervision circuitry.

Is the R5F100LHAFB#X0 pin-compatible with other RL78/G13 devices in the same package?

Yes, the R5F100LHAFB#X0 is pin-compatible with all other 64-pin LFQFP variants in the RL78/G13 family-including R5F100LJAFB#X0, R5F100LLAFB#X0, and R5F101LHAFB#X0-sharing identical pin configuration, electrical characteristics, and peripheral mapping. This enables scalable design reuse across memory and feature variants without PCB redesign.